./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-bftpd/bftpd_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6826aeecba49275836b6b398765a757158a4e84d2c6569399d77f2320562875e ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6826aeecba49275836b6b398765a757158a4e84d2c6569399d77f2320562875e ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:17:21,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:17:21,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:17:22,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:17:22,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:17:22,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:17:22,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:17:22,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:17:22,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:17:22,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:17:22,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:17:22,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:17:22,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:17:22,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:17:22,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:17:22,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:17:22,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:17:22,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:17:22,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:17:22,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:17:22,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:17:22,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:17:22,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:17:22,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:17:22,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:17:22,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:17:22,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:17:22,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:17:22,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:17:22,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:17:22,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:17:22,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:17:22,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:17:22,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:17:22,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:17:22,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:17:22,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:17:22,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:17:22,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:17:22,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:17:22,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:17:22,165 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:17:22,217 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:17:22,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:17:22,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:17:22,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:17:22,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:17:22,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:17:22,228 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:17:22,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:17:22,229 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:17:22,229 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:17:22,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:17:22,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:17:22,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:17:22,231 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:17:22,232 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:17:22,232 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:17:22,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:17:22,232 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:17:22,233 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:17:22,233 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:17:22,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:17:22,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:17:22,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:17:22,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:17:22,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:17:22,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:17:22,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:17:22,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:17:22,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:17:22,237 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_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6826aeecba49275836b6b398765a757158a4e84d2c6569399d77f2320562875e [2021-10-28 09:17:22,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:17:22,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:17:22,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:17:22,654 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:17:22,656 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:17:22,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety-bftpd/bftpd_3.i [2021-10-28 09:17:22,753 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/data/10c8e6e37/0dfc901a69ca4aa7b97d0cdcf5f0b365/FLAGccc116338 [2021-10-28 09:17:23,352 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:17:23,353 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/sv-benchmarks/c/memsafety-bftpd/bftpd_3.i [2021-10-28 09:17:23,367 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/data/10c8e6e37/0dfc901a69ca4aa7b97d0cdcf5f0b365/FLAGccc116338 [2021-10-28 09:17:23,642 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/data/10c8e6e37/0dfc901a69ca4aa7b97d0cdcf5f0b365 [2021-10-28 09:17:23,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:17:23,649 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:17:23,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:17:23,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:17:23,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:17:23,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:17:23" (1/1) ... [2021-10-28 09:17:23,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40b3e38d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:23, skipping insertion in model container [2021-10-28 09:17:23,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:17:23" (1/1) ... [2021-10-28 09:17:23,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:17:23,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:17:24,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:17:24,316 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:17:24,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:17:24,466 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:17:24,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:24 WrapperNode [2021-10-28 09:17:24,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:17:24,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:17:24,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:17:24,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:17:24,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:24" (1/1) ... [2021-10-28 09:17:24,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:24" (1/1) ... [2021-10-28 09:17:24,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:24" (1/1) ... [2021-10-28 09:17:24,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:24" (1/1) ... [2021-10-28 09:17:24,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:24" (1/1) ... [2021-10-28 09:17:24,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:24" (1/1) ... [2021-10-28 09:17:24,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:24" (1/1) ... [2021-10-28 09:17:24,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:17:24,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:17:24,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:17:24,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:17:24,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:24" (1/1) ... [2021-10-28 09:17:24,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:17:24,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:24,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:24,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:17:24,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:17:24,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:17:24,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-10-28 09:17:24,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:17:24,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:17:24,705 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-10-28 09:17:24,705 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-10-28 09:17:24,705 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-10-28 09:17:24,705 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:17:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:17:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:17:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:17:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:17:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:17:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:17:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:17:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:17:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:17:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:17:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:17:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:17:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:17:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:17:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:17:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:17:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:17:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:17:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:17:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:17:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:17:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:17:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:17:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:17:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:17:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:17:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:17:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:17:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:17:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:17:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:17:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:17:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:17:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:17:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:17:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:17:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:17:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:17:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:17:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:17:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:17:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:17:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:17:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:17:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:17:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:17:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:17:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:17:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:17:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:17:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:17:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:17:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:17:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:17:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:17:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:17:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 09:17:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:17:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:17:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:17:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:17:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:17:24,718 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:17:24,718 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:17:24,718 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:17:24,718 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:17:24,718 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:17:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:17:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:17:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:17:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:17:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:17:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:17:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:17:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:17:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:17:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:17:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:17:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:17:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:17:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:17:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:17:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:17:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:17:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:17:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:17:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:17:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:17:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:17:24,723 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:17:24,723 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:17:24,723 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:17:24,723 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:17:24,723 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:17:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:17:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:17:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:17:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:17:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:17:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:17:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:17:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:17:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:17:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:17:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:17:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 09:17:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-28 09:17:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-28 09:17:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 09:17:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-28 09:17:24,727 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-28 09:17:24,727 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-28 09:17:24,727 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-28 09:17:24,727 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-28 09:17:24,727 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-28 09:17:24,727 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-28 09:17:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-28 09:17:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-28 09:17:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-28 09:17:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-28 09:17:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-28 09:17:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-28 09:17:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-28 09:17:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-28 09:17:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-28 09:17:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-28 09:17:24,730 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-28 09:17:24,730 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-28 09:17:24,730 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-28 09:17:24,730 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-28 09:17:24,730 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-28 09:17:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-28 09:17:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-28 09:17:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-28 09:17:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-28 09:17:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-28 09:17:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-28 09:17:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-10-28 09:17:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-28 09:17:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-28 09:17:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-28 09:17:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-28 09:17:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-28 09:17:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-28 09:17:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-28 09:17:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-28 09:17:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-28 09:17:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-28 09:17:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-28 09:17:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-28 09:17:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-28 09:17:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-28 09:17:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-10-28 09:17:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-10-28 09:17:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:17:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-10-28 09:17:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-10-28 09:17:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:17:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:17:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:17:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:17:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:17:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:17:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:17:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 09:17:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:17:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:17:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:17:25,499 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:17:25,509 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 09:17:25,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:17:25 BoogieIcfgContainer [2021-10-28 09:17:25,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:17:25,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:17:25,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:17:25,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:17:25,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:17:23" (1/3) ... [2021-10-28 09:17:25,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18bca537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:17:25, skipping insertion in model container [2021-10-28 09:17:25,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:24" (2/3) ... [2021-10-28 09:17:25,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18bca537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:17:25, skipping insertion in model container [2021-10-28 09:17:25,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:17:25" (3/3) ... [2021-10-28 09:17:25,526 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_3.i [2021-10-28 09:17:25,536 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:17:25,537 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-28 09:17:25,630 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:17:25,639 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:17:25,640 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-28 09:17:25,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 38 states have (on average 1.736842105263158) internal successors, (66), 59 states have internal predecessors, (66), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-28 09:17:25,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:17:25,695 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:17:25,697 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:25,698 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:17:25,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:25,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1583989328, now seen corresponding path program 1 times [2021-10-28 09:17:25,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:25,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753110438] [2021-10-28 09:17:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:25,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:26,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:17:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:26,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:26,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753110438] [2021-10-28 09:17:26,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753110438] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:17:26,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:17:26,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:17:26,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038921618] [2021-10-28 09:17:26,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:17:26,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:26,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:17:26,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:17:26,361 INFO L87 Difference]: Start difference. First operand has 73 states, 38 states have (on average 1.736842105263158) internal successors, (66), 59 states have internal predecessors, (66), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:17:26,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:17:26,877 INFO L93 Difference]: Finished difference Result 97 states and 122 transitions. [2021-10-28 09:17:26,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:17:26,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 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 9 [2021-10-28 09:17:26,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:17:26,893 INFO L225 Difference]: With dead ends: 97 [2021-10-28 09:17:26,894 INFO L226 Difference]: Without dead ends: 88 [2021-10-28 09:17:26,896 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:17:26,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-28 09:17:26,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2021-10-28 09:17:26,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 45 states have (on average 1.5777777777777777) internal successors, (71), 64 states have internal predecessors, (71), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (27), 12 states have call predecessors, (27), 11 states have call successors, (27) [2021-10-28 09:17:27,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 110 transitions. [2021-10-28 09:17:27,003 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 110 transitions. Word has length 9 [2021-10-28 09:17:27,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:17:27,004 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 110 transitions. [2021-10-28 09:17:27,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:17:27,004 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 110 transitions. [2021-10-28 09:17:27,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:17:27,006 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:17:27,006 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:27,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:17:27,007 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:17:27,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:27,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1583989329, now seen corresponding path program 1 times [2021-10-28 09:17:27,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:27,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423667290] [2021-10-28 09:17:27,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:27,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:27,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:17:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:27,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:27,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:27,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423667290] [2021-10-28 09:17:27,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423667290] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:17:27,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:17:27,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:17:27,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465543196] [2021-10-28 09:17:27,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:17:27,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:27,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:17:27,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:17:27,342 INFO L87 Difference]: Start difference. First operand 84 states and 110 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:17:28,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:17:28,062 INFO L93 Difference]: Finished difference Result 165 states and 209 transitions. [2021-10-28 09:17:28,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:17:28,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 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 9 [2021-10-28 09:17:28,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:17:28,065 INFO L225 Difference]: With dead ends: 165 [2021-10-28 09:17:28,065 INFO L226 Difference]: Without dead ends: 165 [2021-10-28 09:17:28,066 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:17:28,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-28 09:17:28,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 134. [2021-10-28 09:17:28,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 87 states have (on average 1.6206896551724137) internal successors, (141), 106 states have internal predecessors, (141), 16 states have call successors, (16), 11 states have call predecessors, (16), 13 states have return successors, (35), 16 states have call predecessors, (35), 15 states have call successors, (35) [2021-10-28 09:17:28,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 192 transitions. [2021-10-28 09:17:28,098 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 192 transitions. Word has length 9 [2021-10-28 09:17:28,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:17:28,099 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 192 transitions. [2021-10-28 09:17:28,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:17:28,099 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 192 transitions. [2021-10-28 09:17:28,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:17:28,100 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:17:28,100 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:28,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:17:28,101 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:17:28,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:28,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1859028932, now seen corresponding path program 1 times [2021-10-28 09:17:28,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:28,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247507270] [2021-10-28 09:17:28,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:28,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:28,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:17:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:28,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:28,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247507270] [2021-10-28 09:17:28,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247507270] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:17:28,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:17:28,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:17:28,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816975404] [2021-10-28 09:17:28,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:17:28,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:28,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:17:28,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:17:28,566 INFO L87 Difference]: Start difference. First operand 134 states and 192 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:17:29,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:17:29,439 INFO L93 Difference]: Finished difference Result 246 states and 348 transitions. [2021-10-28 09:17:29,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:17:29,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 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 10 [2021-10-28 09:17:29,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:17:29,450 INFO L225 Difference]: With dead ends: 246 [2021-10-28 09:17:29,450 INFO L226 Difference]: Without dead ends: 246 [2021-10-28 09:17:29,451 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:17:29,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-10-28 09:17:29,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 192. [2021-10-28 09:17:29,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 136 states have (on average 1.6176470588235294) internal successors, (220), 156 states have internal predecessors, (220), 20 states have call successors, (20), 16 states have call predecessors, (20), 18 states have return successors, (43), 19 states have call predecessors, (43), 19 states have call successors, (43) [2021-10-28 09:17:29,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 283 transitions. [2021-10-28 09:17:29,488 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 283 transitions. Word has length 10 [2021-10-28 09:17:29,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:17:29,488 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 283 transitions. [2021-10-28 09:17:29,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:17:29,489 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 283 transitions. [2021-10-28 09:17:29,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:17:29,489 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:17:29,490 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:29,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:17:29,490 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:17:29,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:29,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1795322128, now seen corresponding path program 1 times [2021-10-28 09:17:29,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:29,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659021974] [2021-10-28 09:17:29,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:29,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:29,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:17:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:29,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:29,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659021974] [2021-10-28 09:17:29,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659021974] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:17:29,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:17:29,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:17:29,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080410366] [2021-10-28 09:17:29,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:17:29,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:29,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:17:29,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:17:29,886 INFO L87 Difference]: Start difference. First operand 192 states and 283 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:17:30,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:17:30,790 INFO L93 Difference]: Finished difference Result 226 states and 305 transitions. [2021-10-28 09:17:30,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:17:30,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 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 11 [2021-10-28 09:17:30,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:17:30,793 INFO L225 Difference]: With dead ends: 226 [2021-10-28 09:17:30,793 INFO L226 Difference]: Without dead ends: 226 [2021-10-28 09:17:30,794 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:17:30,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-28 09:17:30,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 192. [2021-10-28 09:17:30,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 136 states have (on average 1.6029411764705883) internal successors, (218), 156 states have internal predecessors, (218), 20 states have call successors, (20), 16 states have call predecessors, (20), 18 states have return successors, (43), 19 states have call predecessors, (43), 19 states have call successors, (43) [2021-10-28 09:17:30,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 281 transitions. [2021-10-28 09:17:30,817 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 281 transitions. Word has length 11 [2021-10-28 09:17:30,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:17:30,817 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 281 transitions. [2021-10-28 09:17:30,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:17:30,818 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 281 transitions. [2021-10-28 09:17:30,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:17:30,818 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:17:30,818 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:30,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:17:30,819 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:17:30,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:30,819 INFO L85 PathProgramCache]: Analyzing trace with hash -179588794, now seen corresponding path program 1 times [2021-10-28 09:17:30,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:30,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568041831] [2021-10-28 09:17:30,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:30,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:30,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:17:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:30,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:30,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568041831] [2021-10-28 09:17:30,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568041831] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:17:30,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:17:30,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:17:30,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638607321] [2021-10-28 09:17:30,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:17:30,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:30,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:17:30,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:17:30,972 INFO L87 Difference]: Start difference. First operand 192 states and 281 transitions. Second operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-28 09:17:31,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:17:31,793 INFO L93 Difference]: Finished difference Result 271 states and 367 transitions. [2021-10-28 09:17:31,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:17:31,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 12 [2021-10-28 09:17:31,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:17:31,799 INFO L225 Difference]: With dead ends: 271 [2021-10-28 09:17:31,799 INFO L226 Difference]: Without dead ends: 271 [2021-10-28 09:17:31,800 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:17:31,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-10-28 09:17:31,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 223. [2021-10-28 09:17:31,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 165 states have (on average 1.5818181818181818) internal successors, (261), 186 states have internal predecessors, (261), 20 states have call successors, (20), 17 states have call predecessors, (20), 20 states have return successors, (44), 19 states have call predecessors, (44), 19 states have call successors, (44) [2021-10-28 09:17:31,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 325 transitions. [2021-10-28 09:17:31,822 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 325 transitions. Word has length 12 [2021-10-28 09:17:31,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:17:31,823 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 325 transitions. [2021-10-28 09:17:31,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-28 09:17:31,823 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 325 transitions. [2021-10-28 09:17:31,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:17:31,824 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:17:31,824 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:31,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:17:31,825 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:17:31,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:31,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1272285230, now seen corresponding path program 1 times [2021-10-28 09:17:31,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:31,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110286783] [2021-10-28 09:17:31,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:31,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:32,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:17:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:32,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:32,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:32,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110286783] [2021-10-28 09:17:32,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110286783] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:17:32,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:17:32,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:17:32,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977975022] [2021-10-28 09:17:32,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:17:32,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:32,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:17:32,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:17:32,065 INFO L87 Difference]: Start difference. First operand 223 states and 325 transitions. Second operand has 7 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-28 09:17:32,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:17:32,902 INFO L93 Difference]: Finished difference Result 255 states and 337 transitions. [2021-10-28 09:17:32,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:17:32,903 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 13 [2021-10-28 09:17:32,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:17:32,905 INFO L225 Difference]: With dead ends: 255 [2021-10-28 09:17:32,906 INFO L226 Difference]: Without dead ends: 255 [2021-10-28 09:17:32,906 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:17:32,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-10-28 09:17:32,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 223. [2021-10-28 09:17:32,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 165 states have (on average 1.5696969696969696) internal successors, (259), 186 states have internal predecessors, (259), 20 states have call successors, (20), 17 states have call predecessors, (20), 20 states have return successors, (44), 19 states have call predecessors, (44), 19 states have call successors, (44) [2021-10-28 09:17:32,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 323 transitions. [2021-10-28 09:17:32,922 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 323 transitions. Word has length 13 [2021-10-28 09:17:32,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:17:32,923 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 323 transitions. [2021-10-28 09:17:32,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-28 09:17:32,923 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 323 transitions. [2021-10-28 09:17:32,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:17:32,924 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:17:32,924 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:32,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:17:32,925 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:17:32,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:32,925 INFO L85 PathProgramCache]: Analyzing trace with hash 668439832, now seen corresponding path program 1 times [2021-10-28 09:17:32,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:32,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915016684] [2021-10-28 09:17:32,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:32,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:33,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:17:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:33,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:33,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915016684] [2021-10-28 09:17:33,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915016684] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:17:33,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743321131] [2021-10-28 09:17:33,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:33,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:17:33,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:33,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:17:33,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:17:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:33,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:17:33,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:33,599 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-10-28 09:17:33,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 51 [2021-10-28 09:17:33,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:33,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743321131] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:17:33,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:17:33,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-10-28 09:17:33,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791671358] [2021-10-28 09:17:33,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:17:33,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:33,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:17:33,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:17:33,939 INFO L87 Difference]: Start difference. First operand 223 states and 323 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 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) [2021-10-28 09:17:34,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:17:34,807 INFO L93 Difference]: Finished difference Result 257 states and 343 transitions. [2021-10-28 09:17:34,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:17:34,808 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 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 17 [2021-10-28 09:17:34,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:17:34,811 INFO L225 Difference]: With dead ends: 257 [2021-10-28 09:17:34,812 INFO L226 Difference]: Without dead ends: 257 [2021-10-28 09:17:34,812 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:17:34,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-10-28 09:17:34,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 227. [2021-10-28 09:17:34,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 169 states have (on average 1.5088757396449703) internal successors, (255), 190 states have internal predecessors, (255), 20 states have call successors, (20), 17 states have call predecessors, (20), 20 states have return successors, (44), 19 states have call predecessors, (44), 19 states have call successors, (44) [2021-10-28 09:17:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 319 transitions. [2021-10-28 09:17:34,828 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 319 transitions. Word has length 17 [2021-10-28 09:17:34,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:17:34,828 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 319 transitions. [2021-10-28 09:17:34,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 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) [2021-10-28 09:17:34,829 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 319 transitions. [2021-10-28 09:17:34,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:17:34,830 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:17:34,830 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:34,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:35,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:17:35,049 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:17:35,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:35,049 INFO L85 PathProgramCache]: Analyzing trace with hash -753201699, now seen corresponding path program 1 times [2021-10-28 09:17:35,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:35,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682851698] [2021-10-28 09:17:35,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:35,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:35,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:17:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:35,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:35,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:35,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682851698] [2021-10-28 09:17:35,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682851698] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:17:35,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472376665] [2021-10-28 09:17:35,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:35,443 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:17:35,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:35,444 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:17:35,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:17:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:35,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 09:17:35,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:35,846 INFO L354 Elim1Store]: treesize reduction 497, result has 11.1 percent of original size [2021-10-28 09:17:35,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 82 treesize of output 116 [2021-10-28 09:17:46,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 70 [2021-10-28 09:17:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:47,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472376665] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:17:47,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:17:47,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 16 [2021-10-28 09:17:47,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948534689] [2021-10-28 09:17:47,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-28 09:17:47,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:47,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 09:17:47,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:17:47,348 INFO L87 Difference]: Start difference. First operand 227 states and 319 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:18:09,116 WARN L207 SmtUtils]: Spent 11.89 s on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2021-10-28 09:18:16,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:18:16,655 INFO L93 Difference]: Finished difference Result 283 states and 386 transitions. [2021-10-28 09:18:16,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:18:16,656 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-10-28 09:18:16,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:18:16,659 INFO L225 Difference]: With dead ends: 283 [2021-10-28 09:18:16,659 INFO L226 Difference]: Without dead ends: 283 [2021-10-28 09:18:16,660 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2021-10-28 09:18:16,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-10-28 09:18:16,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 233. [2021-10-28 09:18:16,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 175 states have (on average 1.497142857142857) internal successors, (262), 196 states have internal predecessors, (262), 20 states have call successors, (20), 17 states have call predecessors, (20), 20 states have return successors, (44), 19 states have call predecessors, (44), 19 states have call successors, (44) [2021-10-28 09:18:16,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 326 transitions. [2021-10-28 09:18:16,683 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 326 transitions. Word has length 18 [2021-10-28 09:18:16,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:18:16,683 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 326 transitions. [2021-10-28 09:18:16,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:18:16,684 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 326 transitions. [2021-10-28 09:18:16,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:18:16,685 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:18:16,686 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:18:16,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:18:16,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:18:16,910 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:18:16,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:18:16,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1874416105, now seen corresponding path program 1 times [2021-10-28 09:18:16,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:18:16,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953407650] [2021-10-28 09:18:16,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:18:16,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:18:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:17,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:18:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:18:17,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:18:17,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953407650] [2021-10-28 09:18:17,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953407650] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:18:17,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193187597] [2021-10-28 09:18:17,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:18:17,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:18:17,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:18:17,400 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:18:17,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:18:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:17,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 09:18:17,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:18:17,907 INFO L354 Elim1Store]: treesize reduction 354, result has 14.1 percent of original size [2021-10-28 09:18:17,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 86 [2021-10-28 09:18:17,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 112 [2021-10-28 09:18:21,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 75 [2021-10-28 09:18:21,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 60 [2021-10-28 09:18:22,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:18:22,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193187597] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:18:22,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:18:22,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-28 09:18:22,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97132209] [2021-10-28 09:18:22,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:18:22,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:18:22,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:18:22,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:18:22,356 INFO L87 Difference]: Start difference. First operand 233 states and 326 transitions. Second operand has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:18:24,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:18:24,106 INFO L93 Difference]: Finished difference Result 262 states and 347 transitions. [2021-10-28 09:18:24,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:18:24,107 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-10-28 09:18:24,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:18:24,111 INFO L225 Difference]: With dead ends: 262 [2021-10-28 09:18:24,111 INFO L226 Difference]: Without dead ends: 262 [2021-10-28 09:18:24,111 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:18:24,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-28 09:18:24,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 233. [2021-10-28 09:18:24,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 175 states have (on average 1.48) internal successors, (259), 196 states have internal predecessors, (259), 20 states have call successors, (20), 17 states have call predecessors, (20), 20 states have return successors, (44), 19 states have call predecessors, (44), 19 states have call successors, (44) [2021-10-28 09:18:24,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 323 transitions. [2021-10-28 09:18:24,125 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 323 transitions. Word has length 19 [2021-10-28 09:18:24,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:18:24,126 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 323 transitions. [2021-10-28 09:18:24,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:18:24,126 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 323 transitions. [2021-10-28 09:18:24,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:18:24,127 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:18:24,127 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:18:24,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:18:24,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:18:24,341 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting c2Err0ASSERT_VIOLATIONMEMORY_FREE === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:18:24,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:18:24,341 INFO L85 PathProgramCache]: Analyzing trace with hash 550415913, now seen corresponding path program 1 times [2021-10-28 09:18:24,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:18:24,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623573816] [2021-10-28 09:18:24,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:18:24,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:18:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:24,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:18:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:18:24,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:18:24,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623573816] [2021-10-28 09:18:24,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623573816] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:18:24,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:18:24,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:18:24,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19307954] [2021-10-28 09:18:24,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:18:24,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:18:24,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:18:24,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:18:24,470 INFO L87 Difference]: Start difference. First operand 233 states and 323 transitions. Second operand has 4 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:18:24,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:18:24,857 INFO L93 Difference]: Finished difference Result 331 states and 471 transitions. [2021-10-28 09:18:24,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:18:24,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 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 23 [2021-10-28 09:18:24,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:18:24,866 INFO L225 Difference]: With dead ends: 331 [2021-10-28 09:18:24,866 INFO L226 Difference]: Without dead ends: 331 [2021-10-28 09:18:24,867 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:18:24,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-10-28 09:18:24,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 312. [2021-10-28 09:18:24,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 238 states have (on average 1.5) internal successors, (357), 261 states have internal predecessors, (357), 28 states have call successors, (28), 24 states have call predecessors, (28), 28 states have return successors, (76), 26 states have call predecessors, (76), 27 states have call successors, (76) [2021-10-28 09:18:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 461 transitions. [2021-10-28 09:18:24,892 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 461 transitions. Word has length 23 [2021-10-28 09:18:24,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:18:24,893 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 461 transitions. [2021-10-28 09:18:24,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:18:24,894 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 461 transitions. [2021-10-28 09:18:24,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:18:24,896 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:18:24,896 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:18:24,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:18:24,897 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting c2Err3ASSERT_VIOLATIONMEMORY_FREE === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:18:24,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:18:24,898 INFO L85 PathProgramCache]: Analyzing trace with hash 550416137, now seen corresponding path program 1 times [2021-10-28 09:18:24,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:18:24,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706878203] [2021-10-28 09:18:24,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:18:24,899 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:18:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:18:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:25,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:18:25,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:18:25,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706878203] [2021-10-28 09:18:25,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706878203] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:18:25,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:18:25,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:18:25,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215586909] [2021-10-28 09:18:25,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:18:25,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:18:25,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:18:25,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:18:25,011 INFO L87 Difference]: Start difference. First operand 312 states and 461 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:18:25,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:18:25,363 INFO L93 Difference]: Finished difference Result 369 states and 522 transitions. [2021-10-28 09:18:25,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:18:25,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 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 23 [2021-10-28 09:18:25,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:18:25,369 INFO L225 Difference]: With dead ends: 369 [2021-10-28 09:18:25,370 INFO L226 Difference]: Without dead ends: 369 [2021-10-28 09:18:25,370 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:18:25,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-10-28 09:18:25,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 351. [2021-10-28 09:18:25,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 267 states have (on average 1.4868913857677903) internal successors, (397), 291 states have internal predecessors, (397), 32 states have call successors, (32), 28 states have call predecessors, (32), 34 states have return successors, (85), 31 states have call predecessors, (85), 31 states have call successors, (85) [2021-10-28 09:18:25,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 514 transitions. [2021-10-28 09:18:25,406 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 514 transitions. Word has length 23 [2021-10-28 09:18:25,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:18:25,407 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 514 transitions. [2021-10-28 09:18:25,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:18:25,407 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 514 transitions. [2021-10-28 09:18:25,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 09:18:25,414 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:18:25,414 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:18:25,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 09:18:25,414 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting c2Err1ASSERT_VIOLATIONMEMORY_FREE === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:18:25,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:18:25,415 INFO L85 PathProgramCache]: Analyzing trace with hash -116975829, now seen corresponding path program 1 times [2021-10-28 09:18:25,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:18:25,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972494020] [2021-10-28 09:18:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:18:25,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:18:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:25,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:18:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:18:25,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:18:25,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972494020] [2021-10-28 09:18:25,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972494020] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:18:25,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:18:25,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:18:25,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121477770] [2021-10-28 09:18:25,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:18:25,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:18:25,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:18:25,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:18:25,540 INFO L87 Difference]: Start difference. First operand 351 states and 514 transitions. Second operand has 4 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:18:25,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:18:25,949 INFO L93 Difference]: Finished difference Result 366 states and 518 transitions. [2021-10-28 09:18:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:18:25,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (5), 2 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 24 [2021-10-28 09:18:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:18:25,952 INFO L225 Difference]: With dead ends: 366 [2021-10-28 09:18:25,952 INFO L226 Difference]: Without dead ends: 366 [2021-10-28 09:18:25,953 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:18:25,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-10-28 09:18:25,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 351. [2021-10-28 09:18:25,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 267 states have (on average 1.4794007490636705) internal successors, (395), 291 states have internal predecessors, (395), 32 states have call successors, (32), 28 states have call predecessors, (32), 34 states have return successors, (85), 31 states have call predecessors, (85), 31 states have call successors, (85) [2021-10-28 09:18:25,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 512 transitions. [2021-10-28 09:18:25,970 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 512 transitions. Word has length 24 [2021-10-28 09:18:25,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:18:25,970 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 512 transitions. [2021-10-28 09:18:25,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:18:25,971 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 512 transitions. [2021-10-28 09:18:25,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:18:25,975 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:18:25,975 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:18:25,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 09:18:25,976 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:18:25,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:18:25,977 INFO L85 PathProgramCache]: Analyzing trace with hash 35178027, now seen corresponding path program 1 times [2021-10-28 09:18:25,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:18:25,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135898986] [2021-10-28 09:18:25,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:18:25,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:18:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:26,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:18:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:26,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 09:18:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:26,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-28 09:18:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:26,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:18:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:18:26,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:18:26,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135898986] [2021-10-28 09:18:26,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135898986] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:18:26,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:18:26,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:18:26,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649127393] [2021-10-28 09:18:26,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:18:26,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:18:26,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:18:26,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:18:26,103 INFO L87 Difference]: Start difference. First operand 351 states and 512 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:18:26,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:18:26,293 INFO L93 Difference]: Finished difference Result 260 states and 360 transitions. [2021-10-28 09:18:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:18:26,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2021-10-28 09:18:26,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:18:26,296 INFO L225 Difference]: With dead ends: 260 [2021-10-28 09:18:26,296 INFO L226 Difference]: Without dead ends: 260 [2021-10-28 09:18:26,297 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:18:26,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-10-28 09:18:26,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 257. [2021-10-28 09:18:26,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 196 states have (on average 1.4540816326530612) internal successors, (285), 216 states have internal predecessors, (285), 24 states have call successors, (24), 21 states have call predecessors, (24), 19 states have return successors, (47), 19 states have call predecessors, (47), 23 states have call successors, (47) [2021-10-28 09:18:26,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 356 transitions. [2021-10-28 09:18:26,312 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 356 transitions. Word has length 33 [2021-10-28 09:18:26,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:18:26,313 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 356 transitions. [2021-10-28 09:18:26,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:18:26,314 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 356 transitions. [2021-10-28 09:18:26,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:18:26,315 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:18:26,316 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:18:26,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 09:18:26,316 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:18:26,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:18:26,317 INFO L85 PathProgramCache]: Analyzing trace with hash -138461554, now seen corresponding path program 1 times [2021-10-28 09:18:26,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:18:26,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600592756] [2021-10-28 09:18:26,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:18:26,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:18:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:26,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:18:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:26,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 09:18:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 09:18:26,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:18:26,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600592756] [2021-10-28 09:18:26,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600592756] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:18:26,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926567942] [2021-10-28 09:18:26,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:18:26,545 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:18:26,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:18:26,546 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:18:26,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:18:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:26,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:18:27,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:18:27,220 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-28 09:18:27,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-28 09:18:28,940 INFO L354 Elim1Store]: treesize reduction 120, result has 29.0 percent of original size [2021-10-28 09:18:28,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 55 treesize of output 89 [2021-10-28 09:18:32,296 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 09:18:32,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926567942] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:18:32,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:18:32,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-10-28 09:18:32,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885707459] [2021-10-28 09:18:32,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:18:32,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:18:32,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:18:32,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:18:32,299 INFO L87 Difference]: Start difference. First operand 257 states and 356 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 09:18:45,834 WARN L207 SmtUtils]: Spent 11.90 s on a formula simplification that was a NOOP. DAG size: 97 [2021-10-28 09:18:58,109 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 09:18:58,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-28 09:18:58,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:18:58,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-28 09:18:58,311 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:662) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:886) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-10-28 09:18:58,317 INFO L168 Benchmark]: Toolchain (without parser) took 94666.37 ms. Allocated memory was 100.7 MB in the beginning and 226.5 MB in the end (delta: 125.8 MB). Free memory was 67.8 MB in the beginning and 114.3 MB in the end (delta: -46.5 MB). Peak memory consumption was 78.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:58,317 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 100.7 MB. Free memory was 53.8 MB in the beginning and 53.8 MB in the end (delta: 77.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:18:58,318 INFO L168 Benchmark]: CACSL2BoogieTranslator took 814.04 ms. Allocated memory is still 100.7 MB. Free memory was 67.5 MB in the beginning and 67.7 MB in the end (delta: -213.5 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:58,318 INFO L168 Benchmark]: Boogie Preprocessor took 117.89 ms. Allocated memory is still 100.7 MB. Free memory was 67.7 MB in the beginning and 64.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:58,319 INFO L168 Benchmark]: RCFGBuilder took 924.95 ms. Allocated memory is still 100.7 MB. Free memory was 64.5 MB in the beginning and 38.7 MB in the end (delta: 25.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:58,319 INFO L168 Benchmark]: TraceAbstraction took 92800.82 ms. Allocated memory was 100.7 MB in the beginning and 226.5 MB in the end (delta: 125.8 MB). Free memory was 38.2 MB in the beginning and 114.3 MB in the end (delta: -76.1 MB). Peak memory consumption was 51.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:58,321 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 100.7 MB. Free memory was 53.8 MB in the beginning and 53.8 MB in the end (delta: 77.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 814.04 ms. Allocated memory is still 100.7 MB. Free memory was 67.5 MB in the beginning and 67.7 MB in the end (delta: -213.5 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 117.89 ms. Allocated memory is still 100.7 MB. Free memory was 67.7 MB in the beginning and 64.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 924.95 ms. Allocated memory is still 100.7 MB. Free memory was 64.5 MB in the beginning and 38.7 MB in the end (delta: 25.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 92800.82 ms. Allocated memory was 100.7 MB in the beginning and 226.5 MB in the end (delta: 125.8 MB). Free memory was 38.2 MB in the beginning and 114.3 MB in the end (delta: -76.1 MB). Peak memory consumption was 51.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:19:00,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:19:00,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:19:00,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:19:00,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:19:00,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:19:00,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:19:00,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:19:00,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:19:00,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:19:00,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:19:00,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:19:00,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:19:00,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:19:00,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:19:00,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:19:00,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:19:00,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:19:00,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:19:00,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:19:00,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:19:00,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:19:00,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:19:00,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:19:00,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:19:00,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:19:00,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:19:00,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:19:00,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:19:00,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:19:00,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:19:00,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:19:00,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:19:00,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:19:00,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:19:00,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:19:00,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:19:00,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:19:00,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:19:00,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:19:00,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:19:00,841 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 09:19:00,893 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:19:00,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:19:00,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:19:00,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:19:00,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:19:00,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:19:00,897 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:19:00,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:19:00,897 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:19:00,898 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:19:00,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:19:00,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:19:00,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:19:00,899 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:19:00,900 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:19:00,900 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:19:00,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:19:00,900 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:19:00,901 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:19:00,901 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:19:00,901 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:19:00,901 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:19:00,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:19:00,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:19:00,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:19:00,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:19:00,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:19:00,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:19:00,903 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:19:00,903 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:19:00,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:19:00,904 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:19:00,904 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6826aeecba49275836b6b398765a757158a4e84d2c6569399d77f2320562875e [2021-10-28 09:19:01,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:19:01,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:19:01,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:19:01,404 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:19:01,405 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:19:01,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety-bftpd/bftpd_3.i [2021-10-28 09:19:01,475 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/data/810c275ae/512dd4ea1d824804be6006036dbe5d5a/FLAG457275919 [2021-10-28 09:19:02,158 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:19:02,158 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/sv-benchmarks/c/memsafety-bftpd/bftpd_3.i [2021-10-28 09:19:02,187 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/data/810c275ae/512dd4ea1d824804be6006036dbe5d5a/FLAG457275919 [2021-10-28 09:19:02,394 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/data/810c275ae/512dd4ea1d824804be6006036dbe5d5a [2021-10-28 09:19:02,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:19:02,403 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:19:02,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:19:02,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:19:02,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:19:02,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:19:02" (1/1) ... [2021-10-28 09:19:02,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e92b32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:02, skipping insertion in model container [2021-10-28 09:19:02,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:19:02" (1/1) ... [2021-10-28 09:19:02,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:19:02,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:19:02,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:19:02,966 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:19:03,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:19:03,091 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:19:03,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:03 WrapperNode [2021-10-28 09:19:03,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:19:03,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:19:03,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:19:03,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:19:03,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:03" (1/1) ... [2021-10-28 09:19:03,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:03" (1/1) ... [2021-10-28 09:19:03,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:03" (1/1) ... [2021-10-28 09:19:03,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:03" (1/1) ... [2021-10-28 09:19:03,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:03" (1/1) ... [2021-10-28 09:19:03,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:03" (1/1) ... [2021-10-28 09:19:03,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:03" (1/1) ... [2021-10-28 09:19:03,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:19:03,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:19:03,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:19:03,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:19:03,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:03" (1/1) ... [2021-10-28 09:19:03,243 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:19:03,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:19:03,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:19:03,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:19:03,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:19:03,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:19:03,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-10-28 09:19:03,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:19:03,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:19:03,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:19:03,326 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-10-28 09:19:03,326 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-10-28 09:19:03,327 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-10-28 09:19:03,328 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:19:03,328 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:19:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:19:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:19:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:19:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:19:03,330 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:19:03,330 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:19:03,330 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:19:03,330 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:19:03,330 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:19:03,330 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:19:03,331 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:19:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:19:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:19:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:19:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:19:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:19:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:19:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:19:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:19:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:19:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:19:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:19:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:19:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:19:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:19:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:19:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:19:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:19:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:19:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:19:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:19:03,336 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:19:03,336 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:19:03,336 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:19:03,336 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:19:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:19:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:19:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:19:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:19:03,338 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:19:03,339 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:19:03,339 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:19:03,339 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:19:03,339 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:19:03,339 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:19:03,339 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:19:03,340 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:19:03,340 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:19:03,341 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:19:03,341 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:19:03,341 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:19:03,341 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:19:03,342 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:19:03,342 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:19:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:19:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 09:19:03,344 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:19:03,344 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:19:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:19:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:19:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:19:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:19:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:19:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:19:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:19:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:19:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:19:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:19:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:19:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:19:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:19:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:19:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:19:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:19:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:19:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:19:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:19:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:19:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:19:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:19:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:19:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:19:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:19:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:19:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:19:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:19:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:19:03,351 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:19:03,351 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:19:03,351 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:19:03,351 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:19:03,351 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:19:03,352 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:19:03,352 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:19:03,352 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:19:03,352 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:19:03,353 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:19:03,353 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:19:03,354 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:19:03,354 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:19:03,354 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:19:03,355 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:19:03,355 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:19:03,355 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:19:03,355 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 09:19:03,355 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-28 09:19:03,355 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-28 09:19:03,355 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 09:19:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-28 09:19:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-28 09:19:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-28 09:19:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-28 09:19:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-28 09:19:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-28 09:19:03,358 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-28 09:19:03,358 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-28 09:19:03,361 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-28 09:19:03,361 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-28 09:19:03,362 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-28 09:19:03,362 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-28 09:19:03,363 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-28 09:19:03,363 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-28 09:19:03,363 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-28 09:19:03,364 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-28 09:19:03,364 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-28 09:19:03,370 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-28 09:19:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-28 09:19:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-28 09:19:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-28 09:19:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-28 09:19:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-28 09:19:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-28 09:19:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-28 09:19:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-28 09:19:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-28 09:19:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-28 09:19:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-10-28 09:19:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-28 09:19:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-28 09:19:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-28 09:19:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-28 09:19:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-28 09:19:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-28 09:19:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-28 09:19:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-28 09:19:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-28 09:19:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-28 09:19:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-28 09:19:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-28 09:19:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-28 09:19:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-28 09:19:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-10-28 09:19:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-10-28 09:19:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:19:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-10-28 09:19:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-10-28 09:19:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:19:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 09:19:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:19:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:19:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:19:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:19:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:19:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 09:19:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:19:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:19:03,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 09:19:03,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:19:04,306 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:19:04,307 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 09:19:04,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:04 BoogieIcfgContainer [2021-10-28 09:19:04,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:19:04,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:19:04,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:19:04,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:19:04,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:19:02" (1/3) ... [2021-10-28 09:19:04,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8216fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:19:04, skipping insertion in model container [2021-10-28 09:19:04,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:03" (2/3) ... [2021-10-28 09:19:04,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8216fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:19:04, skipping insertion in model container [2021-10-28 09:19:04,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:04" (3/3) ... [2021-10-28 09:19:04,321 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_3.i [2021-10-28 09:19:04,328 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:19:04,328 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-28 09:19:04,383 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:19:04,390 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:19:04,390 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-28 09:19:04,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 38 states have (on average 1.736842105263158) internal successors, (66), 59 states have internal predecessors, (66), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-28 09:19:04,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:19:04,415 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:04,416 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:04,416 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:19:04,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:04,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1137100954, now seen corresponding path program 1 times [2021-10-28 09:19:04,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:04,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679167310] [2021-10-28 09:19:04,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:04,437 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:04,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:04,440 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:04,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:19:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:04,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:19:04,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:05,081 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-10-28 09:19:05,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 69 [2021-10-28 09:19:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:05,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:05,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:05,991 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:05,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679167310] [2021-10-28 09:19:05,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679167310] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:05,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:05,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:19:05,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372167085] [2021-10-28 09:19:05,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:19:06,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:06,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:19:06,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:19:06,018 INFO L87 Difference]: Start difference. First operand has 73 states, 38 states have (on average 1.736842105263158) internal successors, (66), 59 states have internal predecessors, (66), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:19:06,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:06,173 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2021-10-28 09:19:06,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:19:06,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 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 9 [2021-10-28 09:19:06,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:06,186 INFO L225 Difference]: With dead ends: 88 [2021-10-28 09:19:06,186 INFO L226 Difference]: Without dead ends: 82 [2021-10-28 09:19:06,188 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:19:06,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-28 09:19:06,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2021-10-28 09:19:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 60 states have internal predecessors, (69), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15) [2021-10-28 09:19:06,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2021-10-28 09:19:06,235 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 9 [2021-10-28 09:19:06,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:06,236 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2021-10-28 09:19:06,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:19:06,237 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2021-10-28 09:19:06,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:19:06,238 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:06,239 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:06,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:06,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:06,457 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:19:06,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:06,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1137100953, now seen corresponding path program 1 times [2021-10-28 09:19:06,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:06,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243330726] [2021-10-28 09:19:06,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:06,460 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:06,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:06,461 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:06,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:19:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:06,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:19:06,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:06,997 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-10-28 09:19:06,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 51 [2021-10-28 09:19:07,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:07,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:07,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:07,513 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:07,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243330726] [2021-10-28 09:19:07,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243330726] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:07,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:07,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 09:19:07,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731764311] [2021-10-28 09:19:07,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:19:07,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:07,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:19:07,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:19:07,517 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:19:08,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:08,162 INFO L93 Difference]: Finished difference Result 164 states and 208 transitions. [2021-10-28 09:19:08,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:19:08,163 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 9 [2021-10-28 09:19:08,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:08,166 INFO L225 Difference]: With dead ends: 164 [2021-10-28 09:19:08,166 INFO L226 Difference]: Without dead ends: 164 [2021-10-28 09:19:08,167 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:19:08,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-28 09:19:08,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 132. [2021-10-28 09:19:08,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 88 states have (on average 1.625) internal successors, (143), 105 states have internal predecessors, (143), 15 states have call successors, (15), 11 states have call predecessors, (15), 11 states have return successors, (29), 15 states have call predecessors, (29), 14 states have call successors, (29) [2021-10-28 09:19:08,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 187 transitions. [2021-10-28 09:19:08,205 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 187 transitions. Word has length 9 [2021-10-28 09:19:08,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:08,205 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 187 transitions. [2021-10-28 09:19:08,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:19:08,206 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 187 transitions. [2021-10-28 09:19:08,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:19:08,207 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:08,207 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:08,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:08,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:08,424 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:19:08,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:08,425 INFO L85 PathProgramCache]: Analyzing trace with hash -890391164, now seen corresponding path program 1 times [2021-10-28 09:19:08,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:08,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689349792] [2021-10-28 09:19:08,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:08,426 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:08,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:08,427 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:08,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:19:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:08,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 09:19:08,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:09,081 INFO L354 Elim1Store]: treesize reduction 463, result has 13.5 percent of original size [2021-10-28 09:19:09,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 255 treesize of output 299 [2021-10-28 09:19:15,546 INFO L354 Elim1Store]: treesize reduction 36, result has 41.0 percent of original size [2021-10-28 09:19:15,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 126 [2021-10-28 09:19:27,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 109 [2021-10-28 09:19:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:29,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:30,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:30,001 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:30,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689349792] [2021-10-28 09:19:30,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689349792] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:30,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:30,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 09:19:30,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032475123] [2021-10-28 09:19:30,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:19:30,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:30,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:19:30,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:19:30,004 INFO L87 Difference]: Start difference. First operand 132 states and 187 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:19:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:32,584 INFO L93 Difference]: Finished difference Result 245 states and 348 transitions. [2021-10-28 09:19:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:19:32,585 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2021-10-28 09:19:32,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:32,590 INFO L225 Difference]: With dead ends: 245 [2021-10-28 09:19:32,590 INFO L226 Difference]: Without dead ends: 245 [2021-10-28 09:19:32,591 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:19:32,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-10-28 09:19:32,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 192. [2021-10-28 09:19:32,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 139 states have (on average 1.618705035971223) internal successors, (225), 156 states have internal predecessors, (225), 20 states have call successors, (20), 16 states have call predecessors, (20), 15 states have return successors, (39), 19 states have call predecessors, (39), 19 states have call successors, (39) [2021-10-28 09:19:32,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 284 transitions. [2021-10-28 09:19:32,623 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 284 transitions. Word has length 10 [2021-10-28 09:19:32,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:32,623 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 284 transitions. [2021-10-28 09:19:32,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:19:32,624 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 284 transitions. [2021-10-28 09:19:32,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:19:32,625 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:32,625 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:32,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:32,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:32,835 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:19:32,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:32,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1832322202, now seen corresponding path program 1 times [2021-10-28 09:19:32,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:32,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588224059] [2021-10-28 09:19:32,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:32,837 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:32,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:32,838 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:32,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:19:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:33,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 09:19:33,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:33,497 INFO L354 Elim1Store]: treesize reduction 336, result has 13.8 percent of original size [2021-10-28 09:19:33,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 91 treesize of output 124 [2021-10-28 09:19:33,508 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:19:33,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 167 [2021-10-28 09:19:36,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:19:36,933 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-10-28 09:19:36,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 76 [2021-10-28 09:19:43,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 83 [2021-10-28 09:19:43,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 72 [2021-10-28 09:19:47,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:47,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:48,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:48,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:48,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588224059] [2021-10-28 09:19:48,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588224059] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:48,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:48,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 09:19:48,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996464405] [2021-10-28 09:19:48,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:19:48,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:48,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:19:48,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:19:48,309 INFO L87 Difference]: Start difference. First operand 192 states and 284 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:19:50,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:50,642 INFO L93 Difference]: Finished difference Result 337 states and 445 transitions. [2021-10-28 09:19:50,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:19:50,644 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 11 [2021-10-28 09:19:50,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:50,648 INFO L225 Difference]: With dead ends: 337 [2021-10-28 09:19:50,648 INFO L226 Difference]: Without dead ends: 337 [2021-10-28 09:19:50,648 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:19:50,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-10-28 09:19:50,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 268. [2021-10-28 09:19:50,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 196 states have (on average 1.5765306122448979) internal successors, (309), 218 states have internal predecessors, (309), 27 states have call successors, (27), 21 states have call predecessors, (27), 27 states have return successors, (62), 28 states have call predecessors, (62), 26 states have call successors, (62) [2021-10-28 09:19:50,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 398 transitions. [2021-10-28 09:19:50,687 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 398 transitions. Word has length 11 [2021-10-28 09:19:50,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:50,688 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 398 transitions. [2021-10-28 09:19:50,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:19:50,688 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 398 transitions. [2021-10-28 09:19:50,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:19:50,689 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:50,689 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:50,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:50,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:50,900 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:19:50,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:50,901 INFO L85 PathProgramCache]: Analyzing trace with hash -967413306, now seen corresponding path program 1 times [2021-10-28 09:19:50,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:50,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201139464] [2021-10-28 09:19:50,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:50,902 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:50,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:50,903 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:50,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:19:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:51,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:19:51,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:51,462 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-10-28 09:19:51,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 91 treesize of output 133 [2021-10-28 09:19:55,165 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 09:19:55,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 92 [2021-10-28 09:20:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:05,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:20:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:05,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:20:05,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201139464] [2021-10-28 09:20:05,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201139464] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:20:05,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:20:05,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 09:20:05,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184530703] [2021-10-28 09:20:05,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:20:05,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:20:05,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:20:05,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:20:05,761 INFO L87 Difference]: Start difference. First operand 268 states and 398 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:20:18,543 WARN L207 SmtUtils]: Spent 12.47 s on a formula simplification that was a NOOP. DAG size: 102 [2021-10-28 09:20:49,081 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 09:20:49,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-28 09:20:49,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-28 09:20:49,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:20:49,283 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:662) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:886) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-10-28 09:20:49,286 INFO L168 Benchmark]: Toolchain (without parser) took 106883.19 ms. Allocated memory was 71.3 MB in the beginning and 207.6 MB in the end (delta: 136.3 MB). Free memory was 50.8 MB in the beginning and 69.9 MB in the end (delta: -19.2 MB). Peak memory consumption was 116.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:20:49,287 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 71.3 MB. Free memory was 51.8 MB in the beginning and 51.7 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:20:49,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.98 ms. Allocated memory is still 71.3 MB. Free memory was 50.5 MB in the beginning and 44.5 MB in the end (delta: 6.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:20:49,288 INFO L168 Benchmark]: Boogie Preprocessor took 139.71 ms. Allocated memory is still 71.3 MB. Free memory was 44.5 MB in the beginning and 40.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:20:49,289 INFO L168 Benchmark]: RCFGBuilder took 1076.23 ms. Allocated memory was 71.3 MB in the beginning and 96.5 MB in the end (delta: 25.2 MB). Free memory was 40.9 MB in the beginning and 58.5 MB in the end (delta: -17.6 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:20:49,289 INFO L168 Benchmark]: TraceAbstraction took 104973.08 ms. Allocated memory was 96.5 MB in the beginning and 207.6 MB in the end (delta: 111.1 MB). Free memory was 58.0 MB in the beginning and 69.9 MB in the end (delta: -11.9 MB). Peak memory consumption was 98.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:20:49,292 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 71.3 MB. Free memory was 51.8 MB in the beginning and 51.7 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 687.98 ms. Allocated memory is still 71.3 MB. Free memory was 50.5 MB in the beginning and 44.5 MB in the end (delta: 6.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 139.71 ms. Allocated memory is still 71.3 MB. Free memory was 44.5 MB in the beginning and 40.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1076.23 ms. Allocated memory was 71.3 MB in the beginning and 96.5 MB in the end (delta: 25.2 MB). Free memory was 40.9 MB in the beginning and 58.5 MB in the end (delta: -17.6 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 104973.08 ms. Allocated memory was 96.5 MB in the beginning and 207.6 MB in the end (delta: 111.1 MB). Free memory was 58.0 MB in the beginning and 69.9 MB in the end (delta: -11.9 MB). Peak memory consumption was 98.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57937875-caa8-4ee4-a0ba-895e1841b981/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...