./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 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-bftpd/bftpd_3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 b34e199f0da2018b0ae97fc3f9a24725315a1b16 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-bftpd/bftpd_3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 b34e199f0da2018b0ae97fc3f9a24725315a1b16 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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-20ed64e [2021-08-27 07:52:14,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 07:52:14,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 07:52:14,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 07:52:14,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 07:52:14,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 07:52:14,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 07:52:14,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 07:52:14,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 07:52:14,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 07:52:14,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 07:52:14,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 07:52:14,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 07:52:14,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 07:52:14,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 07:52:14,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 07:52:14,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 07:52:14,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 07:52:14,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 07:52:14,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 07:52:14,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 07:52:14,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 07:52:14,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 07:52:14,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 07:52:14,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 07:52:14,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 07:52:14,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 07:52:14,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 07:52:14,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 07:52:14,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 07:52:14,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 07:52:14,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 07:52:14,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 07:52:14,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 07:52:14,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 07:52:14,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 07:52:14,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 07:52:14,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 07:52:14,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 07:52:14,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 07:52:14,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 07:52:14,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 07:52:14,083 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 07:52:14,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 07:52:14,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 07:52:14,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 07:52:14,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 07:52:14,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 07:52:14,087 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 07:52:14,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 07:52:14,087 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 07:52:14,087 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 07:52:14,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 07:52:14,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 07:52:14,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 07:52:14,088 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 07:52:14,088 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 07:52:14,088 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 07:52:14,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 07:52:14,095 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 07:52:14,096 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 07:52:14,096 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 07:52:14,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 07:52:14,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 07:52:14,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 07:52:14,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:52:14,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 07:52:14,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 07:52:14,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 07:52:14,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 07:52:14,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 07:52:14,098 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b34e199f0da2018b0ae97fc3f9a24725315a1b16 [2021-08-27 07:52:14,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 07:52:14,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 07:52:14,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 07:52:14,358 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 07:52:14,358 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 07:52:14,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-bftpd/bftpd_3.i [2021-08-27 07:52:14,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a592399a/ada1a5d4f49c44358ad6dddb27e8aa3b/FLAG27c21801e [2021-08-27 07:52:14,769 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 07:52:14,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-bftpd/bftpd_3.i [2021-08-27 07:52:14,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a592399a/ada1a5d4f49c44358ad6dddb27e8aa3b/FLAG27c21801e [2021-08-27 07:52:14,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a592399a/ada1a5d4f49c44358ad6dddb27e8aa3b [2021-08-27 07:52:14,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 07:52:14,792 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 07:52:14,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 07:52:14,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 07:52:14,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 07:52:14,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:52:14" (1/1) ... [2021-08-27 07:52:14,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2194c6f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:14, skipping insertion in model container [2021-08-27 07:52:14,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:52:14" (1/1) ... [2021-08-27 07:52:14,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 07:52:14,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 07:52:15,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:52:15,070 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 07:52:15,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:52:15,140 INFO L208 MainTranslator]: Completed translation [2021-08-27 07:52:15,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:15 WrapperNode [2021-08-27 07:52:15,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 07:52:15,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 07:52:15,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 07:52:15,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 07:52:15,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:15" (1/1) ... [2021-08-27 07:52:15,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:15" (1/1) ... [2021-08-27 07:52:15,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:15" (1/1) ... [2021-08-27 07:52:15,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:15" (1/1) ... [2021-08-27 07:52:15,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:15" (1/1) ... [2021-08-27 07:52:15,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:15" (1/1) ... [2021-08-27 07:52:15,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:15" (1/1) ... [2021-08-27 07:52:15,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 07:52:15,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 07:52:15,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 07:52:15,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 07:52:15,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:15" (1/1) ... [2021-08-27 07:52:15,185 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:52:15,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:15,203 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 07:52:15,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 07:52:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 07:52:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 07:52:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-08-27 07:52:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 07:52:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 07:52:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-08-27 07:52:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-08-27 07:52:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-08-27 07:52:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 07:52:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 07:52:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 07:52:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 07:52:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 07:52:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 07:52:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 07:52:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 07:52:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 07:52:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 07:52:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 07:52:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 07:52:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 07:52:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 07:52:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 07:52:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 07:52:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 07:52:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 07:52:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 07:52:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 07:52:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 07:52:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 07:52:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 07:52:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 07:52:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 07:52:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 07:52:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 07:52:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 07:52:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 07:52:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 07:52:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 07:52:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 07:52:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 07:52:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 07:52:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 07:52:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 07:52:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 07:52:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 07:52:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 07:52:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 07:52:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 07:52:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 07:52:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 07:52:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 07:52:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 07:52:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 07:52:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 07:52:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 07:52:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 07:52:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 07:52:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 07:52:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 07:52:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 07:52:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 07:52:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 07:52:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 07:52:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 07:52:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-27 07:52:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 07:52:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 07:52:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 07:52:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 07:52:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 07:52:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 07:52:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 07:52:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 07:52:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 07:52:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 07:52:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 07:52:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 07:52:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 07:52:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 07:52:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 07:52:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 07:52:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 07:52:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 07:52:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 07:52:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 07:52:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 07:52:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 07:52:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 07:52:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 07:52:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 07:52:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 07:52:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 07:52:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 07:52:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 07:52:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 07:52:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 07:52:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 07:52:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 07:52:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 07:52:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 07:52:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 07:52:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 07:52:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 07:52:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 07:52:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 07:52:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 07:52:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 07:52:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 07:52:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 07:52:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 07:52:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 07:52:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 07:52:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 07:52:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 07:52:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-27 07:52:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-27 07:52:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 07:52:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-27 07:52:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-27 07:52:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-27 07:52:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-27 07:52:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-27 07:52:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-27 07:52:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-27 07:52:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-27 07:52:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-27 07:52:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-27 07:52:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-27 07:52:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-27 07:52:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-27 07:52:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-27 07:52:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-27 07:52:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-27 07:52:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-27 07:52:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-27 07:52:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-27 07:52:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-27 07:52:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-27 07:52:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-27 07:52:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-27 07:52:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-27 07:52:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-27 07:52:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-27 07:52:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-27 07:52:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-27 07:52:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-08-27 07:52:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-27 07:52:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-27 07:52:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-27 07:52:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-27 07:52:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-27 07:52:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-27 07:52:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-27 07:52:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-27 07:52:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-27 07:52:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-27 07:52:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-27 07:52:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-27 07:52:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-27 07:52:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-27 07:52:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-08-27 07:52:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-08-27 07:52:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 07:52:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-08-27 07:52:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-08-27 07:52:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 07:52:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 07:52:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 07:52:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 07:52:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 07:52:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 07:52:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 07:52:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 07:52:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 07:52:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 07:52:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 07:52:15,693 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 07:52:15,694 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-27 07:52:15,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:52:15 BoogieIcfgContainer [2021-08-27 07:52:15,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 07:52:15,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 07:52:15,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 07:52:15,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 07:52:15,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:52:14" (1/3) ... [2021-08-27 07:52:15,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17eb59bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:52:15, skipping insertion in model container [2021-08-27 07:52:15,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:52:15" (2/3) ... [2021-08-27 07:52:15,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17eb59bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:52:15, skipping insertion in model container [2021-08-27 07:52:15,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:52:15" (3/3) ... [2021-08-27 07:52:15,701 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_3.i [2021-08-27 07:52:15,704 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 07:52:15,705 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-08-27 07:52:15,730 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 07:52:15,734 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, mConcurrency=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 [2021-08-27 07:52:15,734 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-08-27 07:52:15,753 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) [2021-08-27 07:52:15,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 07:52:15,759 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:15,759 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:15,759 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 07:52:15,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:15,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1583989328, now seen corresponding path program 1 times [2021-08-27 07:52:15,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:15,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206697765] [2021-08-27 07:52:15,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:15,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:16,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:16,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:16,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:16,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206697765] [2021-08-27 07:52:16,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206697765] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:16,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:16,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 07:52:16,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217994784] [2021-08-27 07:52:16,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 07:52:16,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:16,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 07:52:16,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:52:16,186 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) [2021-08-27 07:52:16,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:16,487 INFO L93 Difference]: Finished difference Result 97 states and 122 transitions. [2021-08-27 07:52:16,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 07:52:16,489 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 [2021-08-27 07:52:16,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:16,496 INFO L225 Difference]: With dead ends: 97 [2021-08-27 07:52:16,496 INFO L226 Difference]: Without dead ends: 88 [2021-08-27 07:52:16,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 117.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:52:16,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-08-27 07:52:16,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2021-08-27 07:52:16,537 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) [2021-08-27 07:52:16,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 110 transitions. [2021-08-27 07:52:16,542 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 110 transitions. Word has length 9 [2021-08-27 07:52:16,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:16,542 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 110 transitions. [2021-08-27 07:52:16,542 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) [2021-08-27 07:52:16,542 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 110 transitions. [2021-08-27 07:52:16,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 07:52:16,543 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:16,544 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:16,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 07:52:16,544 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 07:52:16,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:16,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1583989329, now seen corresponding path program 1 times [2021-08-27 07:52:16,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:16,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300907167] [2021-08-27 07:52:16,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:16,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:16,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:16,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:16,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300907167] [2021-08-27 07:52:16,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300907167] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:16,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:16,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 07:52:16,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368378827] [2021-08-27 07:52:16,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 07:52:16,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:16,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 07:52:16,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:52:16,709 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) [2021-08-27 07:52:17,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:17,118 INFO L93 Difference]: Finished difference Result 165 states and 209 transitions. [2021-08-27 07:52:17,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 07:52:17,119 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 [2021-08-27 07:52:17,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:17,120 INFO L225 Difference]: With dead ends: 165 [2021-08-27 07:52:17,120 INFO L226 Difference]: Without dead ends: 165 [2021-08-27 07:52:17,121 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 129.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-27 07:52:17,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-08-27 07:52:17,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 134. [2021-08-27 07:52:17,130 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) [2021-08-27 07:52:17,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 192 transitions. [2021-08-27 07:52:17,131 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 192 transitions. Word has length 9 [2021-08-27 07:52:17,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:17,131 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 192 transitions. [2021-08-27 07:52:17,131 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) [2021-08-27 07:52:17,132 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 192 transitions. [2021-08-27 07:52:17,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 07:52:17,132 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:17,132 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:17,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 07:52:17,132 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)] === [2021-08-27 07:52:17,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:17,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1859028932, now seen corresponding path program 1 times [2021-08-27 07:52:17,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:17,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194338215] [2021-08-27 07:52:17,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:17,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:17,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:17,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:17,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194338215] [2021-08-27 07:52:17,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194338215] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:17,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:17,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 07:52:17,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948656274] [2021-08-27 07:52:17,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 07:52:17,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:17,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 07:52:17,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 07:52:17,385 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) [2021-08-27 07:52:18,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:18,002 INFO L93 Difference]: Finished difference Result 246 states and 348 transitions. [2021-08-27 07:52:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:52:18,003 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 [2021-08-27 07:52:18,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:18,007 INFO L225 Difference]: With dead ends: 246 [2021-08-27 07:52:18,007 INFO L226 Difference]: Without dead ends: 246 [2021-08-27 07:52:18,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 281.3ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:52:18,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-08-27 07:52:18,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 192. [2021-08-27 07:52:18,032 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) [2021-08-27 07:52:18,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 283 transitions. [2021-08-27 07:52:18,033 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 283 transitions. Word has length 10 [2021-08-27 07:52:18,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:18,033 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 283 transitions. [2021-08-27 07:52:18,033 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) [2021-08-27 07:52:18,033 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 283 transitions. [2021-08-27 07:52:18,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 07:52:18,034 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:18,034 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:18,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 07:52:18,034 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)] === [2021-08-27 07:52:18,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:18,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1795322128, now seen corresponding path program 1 times [2021-08-27 07:52:18,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:18,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195141899] [2021-08-27 07:52:18,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:18,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:18,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:18,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:18,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:18,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195141899] [2021-08-27 07:52:18,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195141899] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:18,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:18,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 07:52:18,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009307450] [2021-08-27 07:52:18,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 07:52:18,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:18,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 07:52:18,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-27 07:52:18,276 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) [2021-08-27 07:52:18,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:18,949 INFO L93 Difference]: Finished difference Result 226 states and 305 transitions. [2021-08-27 07:52:18,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 07:52:18,950 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 [2021-08-27 07:52:18,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:18,951 INFO L225 Difference]: With dead ends: 226 [2021-08-27 07:52:18,951 INFO L226 Difference]: Without dead ends: 226 [2021-08-27 07:52:18,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 334.5ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:52:18,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-08-27 07:52:18,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 192. [2021-08-27 07:52:18,957 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) [2021-08-27 07:52:18,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 281 transitions. [2021-08-27 07:52:18,958 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 281 transitions. Word has length 11 [2021-08-27 07:52:18,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:18,958 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 281 transitions. [2021-08-27 07:52:18,959 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) [2021-08-27 07:52:18,959 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 281 transitions. [2021-08-27 07:52:18,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 07:52:18,959 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:18,959 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:18,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 07:52:18,960 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)] === [2021-08-27 07:52:18,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:18,960 INFO L82 PathProgramCache]: Analyzing trace with hash -179588794, now seen corresponding path program 1 times [2021-08-27 07:52:18,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:18,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188466106] [2021-08-27 07:52:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:18,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:19,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:19,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:19,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:19,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188466106] [2021-08-27 07:52:19,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188466106] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:19,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:19,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 07:52:19,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201521978] [2021-08-27 07:52:19,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 07:52:19,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:19,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 07:52:19,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-27 07:52:19,051 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) [2021-08-27 07:52:19,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:19,647 INFO L93 Difference]: Finished difference Result 271 states and 367 transitions. [2021-08-27 07:52:19,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:52:19,648 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 [2021-08-27 07:52:19,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:19,650 INFO L225 Difference]: With dead ends: 271 [2021-08-27 07:52:19,650 INFO L226 Difference]: Without dead ends: 271 [2021-08-27 07:52:19,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 271.8ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:52:19,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-08-27 07:52:19,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 223. [2021-08-27 07:52:19,654 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) [2021-08-27 07:52:19,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 325 transitions. [2021-08-27 07:52:19,655 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 325 transitions. Word has length 12 [2021-08-27 07:52:19,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:19,656 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 325 transitions. [2021-08-27 07:52:19,656 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) [2021-08-27 07:52:19,656 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 325 transitions. [2021-08-27 07:52:19,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-27 07:52:19,656 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:19,656 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:19,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 07:52:19,656 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)] === [2021-08-27 07:52:19,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:19,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1272285230, now seen corresponding path program 1 times [2021-08-27 07:52:19,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:19,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661847277] [2021-08-27 07:52:19,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:19,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:19,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:19,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:19,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:19,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661847277] [2021-08-27 07:52:19,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661847277] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:19,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:19,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 07:52:19,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211696216] [2021-08-27 07:52:19,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 07:52:19,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:19,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 07:52:19,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-27 07:52:19,783 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) [2021-08-27 07:52:20,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:20,404 INFO L93 Difference]: Finished difference Result 255 states and 337 transitions. [2021-08-27 07:52:20,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 07:52:20,404 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 [2021-08-27 07:52:20,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:20,405 INFO L225 Difference]: With dead ends: 255 [2021-08-27 07:52:20,406 INFO L226 Difference]: Without dead ends: 255 [2021-08-27 07:52:20,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 297.3ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:52:20,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-08-27 07:52:20,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 223. [2021-08-27 07:52:20,411 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) [2021-08-27 07:52:20,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 323 transitions. [2021-08-27 07:52:20,413 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 323 transitions. Word has length 13 [2021-08-27 07:52:20,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:20,413 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 323 transitions. [2021-08-27 07:52:20,413 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) [2021-08-27 07:52:20,413 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 323 transitions. [2021-08-27 07:52:20,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 07:52:20,413 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:20,414 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:20,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 07:52:20,414 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 07:52:20,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:20,414 INFO L82 PathProgramCache]: Analyzing trace with hash 668439832, now seen corresponding path program 1 times [2021-08-27 07:52:20,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:20,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796890619] [2021-08-27 07:52:20,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:20,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:20,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:20,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:20,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:20,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796890619] [2021-08-27 07:52:20,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796890619] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:20,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448870039] [2021-08-27 07:52:20,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:20,525 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:20,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:20,527 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:52:20,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 07:52:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:20,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 07:52:20,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:20,823 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-08-27 07:52:20,824 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 [2021-08-27 07:52:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:21,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448870039] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:21,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:21,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-08-27 07:52:21,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473253328] [2021-08-27 07:52:21,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 07:52:21,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:21,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 07:52:21,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 07:52:21,046 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) [2021-08-27 07:52:21,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:21,641 INFO L93 Difference]: Finished difference Result 257 states and 343 transitions. [2021-08-27 07:52:21,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:52:21,641 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 [2021-08-27 07:52:21,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:21,643 INFO L225 Difference]: With dead ends: 257 [2021-08-27 07:52:21,643 INFO L226 Difference]: Without dead ends: 257 [2021-08-27 07:52:21,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 221.9ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:52:21,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-08-27 07:52:21,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 227. [2021-08-27 07:52:21,650 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) [2021-08-27 07:52:21,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 319 transitions. [2021-08-27 07:52:21,651 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 319 transitions. Word has length 17 [2021-08-27 07:52:21,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:21,652 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 319 transitions. [2021-08-27 07:52:21,652 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) [2021-08-27 07:52:21,652 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 319 transitions. [2021-08-27 07:52:21,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-27 07:52:21,660 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:21,660 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:21,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-27 07:52:21,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:21,863 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)] === [2021-08-27 07:52:21,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:21,864 INFO L82 PathProgramCache]: Analyzing trace with hash -753201699, now seen corresponding path program 1 times [2021-08-27 07:52:21,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:21,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610440037] [2021-08-27 07:52:21,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:21,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:22,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:22,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:22,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610440037] [2021-08-27 07:52:22,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610440037] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:22,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254998605] [2021-08-27 07:52:22,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:22,162 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:22,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:22,169 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:52:22,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 07:52:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:22,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-27 07:52:22,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:22,486 INFO L354 Elim1Store]: treesize reduction 497, result has 11.1 percent of original size [2021-08-27 07:52:22,487 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 [2021-08-27 07:52:29,379 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 [2021-08-27 07:52:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:29,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254998605] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:29,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:29,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 16 [2021-08-27 07:52:29,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930520733] [2021-08-27 07:52:29,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-27 07:52:29,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:29,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-27 07:52:29,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-08-27 07:52:29,846 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) [2021-08-27 07:52:45,130 WARN L207 SmtUtils]: Spent 8.36 s on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2021-08-27 07:52:51,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:51,122 INFO L93 Difference]: Finished difference Result 283 states and 386 transitions. [2021-08-27 07:52:51,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-27 07:52:51,123 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 [2021-08-27 07:52:51,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:51,124 INFO L225 Difference]: With dead ends: 283 [2021-08-27 07:52:51,124 INFO L226 Difference]: Without dead ends: 283 [2021-08-27 07:52:51,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 14009.3ms TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2021-08-27 07:52:51,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-08-27 07:52:51,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 233. [2021-08-27 07:52:51,134 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) [2021-08-27 07:52:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 326 transitions. [2021-08-27 07:52:51,135 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 326 transitions. Word has length 18 [2021-08-27 07:52:51,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:51,135 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 326 transitions. [2021-08-27 07:52:51,135 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) [2021-08-27 07:52:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 326 transitions. [2021-08-27 07:52:51,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 07:52:51,136 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:51,136 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:51,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:51,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-08-27 07:52:51,353 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)] === [2021-08-27 07:52:51,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:51,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1874416105, now seen corresponding path program 1 times [2021-08-27 07:52:51,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:51,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147307574] [2021-08-27 07:52:51,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:51,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:51,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:51,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:51,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147307574] [2021-08-27 07:52:51,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147307574] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:51,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74490973] [2021-08-27 07:52:51,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:51,662 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:51,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:51,663 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:52:51,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-27 07:52:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:51,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-27 07:52:51,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:52,064 INFO L354 Elim1Store]: treesize reduction 354, result has 14.1 percent of original size [2021-08-27 07:52:52,065 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 [2021-08-27 07:52:52,075 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 [2021-08-27 07:52:54,246 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 [2021-08-27 07:52:54,248 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 [2021-08-27 07:52:55,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:55,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74490973] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:55,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:55,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-08-27 07:52:55,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417656980] [2021-08-27 07:52:55,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-27 07:52:55,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:55,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-27 07:52:55,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:52:55,034 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) [2021-08-27 07:52:56,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:56,248 INFO L93 Difference]: Finished difference Result 262 states and 347 transitions. [2021-08-27 07:52:56,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 07:52:56,249 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 [2021-08-27 07:52:56,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:56,250 INFO L225 Difference]: With dead ends: 262 [2021-08-27 07:52:56,250 INFO L226 Difference]: Without dead ends: 262 [2021-08-27 07:52:56,250 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 669.1ms TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-08-27 07:52:56,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-08-27 07:52:56,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 233. [2021-08-27 07:52:56,254 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) [2021-08-27 07:52:56,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 323 transitions. [2021-08-27 07:52:56,255 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 323 transitions. Word has length 19 [2021-08-27 07:52:56,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:56,256 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 323 transitions. [2021-08-27 07:52:56,256 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) [2021-08-27 07:52:56,256 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 323 transitions. [2021-08-27 07:52:56,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 07:52:56,257 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:56,257 INFO L512 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] [2021-08-27 07:52:56,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:56,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:56,465 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting c2Err0ASSERT_VIOLATIONMEMORY_FREE === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 07:52:56,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:56,465 INFO L82 PathProgramCache]: Analyzing trace with hash 550415913, now seen corresponding path program 1 times [2021-08-27 07:52:56,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:56,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646360951] [2021-08-27 07:52:56,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:56,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:56,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:56,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:56,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646360951] [2021-08-27 07:52:56,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646360951] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:56,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:56,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 07:52:56,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063954704] [2021-08-27 07:52:56,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 07:52:56,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:56,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 07:52:56,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:52:56,525 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) [2021-08-27 07:52:56,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:56,772 INFO L93 Difference]: Finished difference Result 331 states and 471 transitions. [2021-08-27 07:52:56,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 07:52:56,773 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 [2021-08-27 07:52:56,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:56,774 INFO L225 Difference]: With dead ends: 331 [2021-08-27 07:52:56,774 INFO L226 Difference]: Without dead ends: 331 [2021-08-27 07:52:56,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:52:56,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-08-27 07:52:56,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 312. [2021-08-27 07:52:56,780 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) [2021-08-27 07:52:56,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 461 transitions. [2021-08-27 07:52:56,782 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 461 transitions. Word has length 23 [2021-08-27 07:52:56,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:56,782 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 461 transitions. [2021-08-27 07:52:56,782 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) [2021-08-27 07:52:56,782 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 461 transitions. [2021-08-27 07:52:56,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 07:52:56,782 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:56,782 INFO L512 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] [2021-08-27 07:52:56,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-27 07:52:56,782 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting c2Err3ASSERT_VIOLATIONMEMORY_FREE === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 07:52:56,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:56,783 INFO L82 PathProgramCache]: Analyzing trace with hash 550416137, now seen corresponding path program 1 times [2021-08-27 07:52:56,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:56,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63313490] [2021-08-27 07:52:56,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:56,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:56,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:56,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:56,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:56,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63313490] [2021-08-27 07:52:56,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63313490] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:56,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:56,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 07:52:56,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689985775] [2021-08-27 07:52:56,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 07:52:56,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:56,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 07:52:56,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:52:56,867 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) [2021-08-27 07:52:57,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:57,093 INFO L93 Difference]: Finished difference Result 369 states and 522 transitions. [2021-08-27 07:52:57,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 07:52:57,094 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 [2021-08-27 07:52:57,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:57,095 INFO L225 Difference]: With dead ends: 369 [2021-08-27 07:52:57,096 INFO L226 Difference]: Without dead ends: 369 [2021-08-27 07:52:57,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:52:57,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-08-27 07:52:57,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 351. [2021-08-27 07:52:57,102 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) [2021-08-27 07:52:57,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 514 transitions. [2021-08-27 07:52:57,104 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 514 transitions. Word has length 23 [2021-08-27 07:52:57,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:57,104 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 514 transitions. [2021-08-27 07:52:57,104 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) [2021-08-27 07:52:57,105 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 514 transitions. [2021-08-27 07:52:57,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-27 07:52:57,105 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:57,105 INFO L512 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] [2021-08-27 07:52:57,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-27 07:52:57,105 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting c2Err1ASSERT_VIOLATIONMEMORY_FREE === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 07:52:57,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:57,106 INFO L82 PathProgramCache]: Analyzing trace with hash -116975829, now seen corresponding path program 1 times [2021-08-27 07:52:57,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:57,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938179244] [2021-08-27 07:52:57,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:57,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:57,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:57,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:57,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:57,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938179244] [2021-08-27 07:52:57,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938179244] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:57,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:57,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 07:52:57,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542138628] [2021-08-27 07:52:57,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 07:52:57,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:57,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 07:52:57,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:52:57,174 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) [2021-08-27 07:52:57,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:57,442 INFO L93 Difference]: Finished difference Result 366 states and 518 transitions. [2021-08-27 07:52:57,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 07:52:57,443 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 [2021-08-27 07:52:57,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:57,445 INFO L225 Difference]: With dead ends: 366 [2021-08-27 07:52:57,445 INFO L226 Difference]: Without dead ends: 366 [2021-08-27 07:52:57,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:52:57,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-08-27 07:52:57,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 351. [2021-08-27 07:52:57,451 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) [2021-08-27 07:52:57,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 512 transitions. [2021-08-27 07:52:57,452 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 512 transitions. Word has length 24 [2021-08-27 07:52:57,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:57,453 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 512 transitions. [2021-08-27 07:52:57,453 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) [2021-08-27 07:52:57,453 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 512 transitions. [2021-08-27 07:52:57,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-27 07:52:57,454 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:57,454 INFO L512 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] [2021-08-27 07:52:57,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-27 07:52:57,454 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 07:52:57,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:57,454 INFO L82 PathProgramCache]: Analyzing trace with hash 35178027, now seen corresponding path program 1 times [2021-08-27 07:52:57,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:57,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888899602] [2021-08-27 07:52:57,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:57,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:57,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:57,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 07:52:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:57,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:52:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:57,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:52:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:57,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:57,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888899602] [2021-08-27 07:52:57,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888899602] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:57,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:57,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 07:52:57,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236620263] [2021-08-27 07:52:57,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 07:52:57,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:57,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 07:52:57,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:52:57,535 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) [2021-08-27 07:52:57,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:57,670 INFO L93 Difference]: Finished difference Result 260 states and 360 transitions. [2021-08-27 07:52:57,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 07:52:57,671 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 [2021-08-27 07:52:57,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:57,672 INFO L225 Difference]: With dead ends: 260 [2021-08-27 07:52:57,672 INFO L226 Difference]: Without dead ends: 260 [2021-08-27 07:52:57,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 40.5ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:52:57,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-08-27 07:52:57,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 257. [2021-08-27 07:52:57,676 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) [2021-08-27 07:52:57,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 356 transitions. [2021-08-27 07:52:57,677 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 356 transitions. Word has length 33 [2021-08-27 07:52:57,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:57,678 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 356 transitions. [2021-08-27 07:52:57,678 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) [2021-08-27 07:52:57,678 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 356 transitions. [2021-08-27 07:52:57,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-27 07:52:57,679 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:57,679 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:57,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-27 07:52:57,679 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)] === [2021-08-27 07:52:57,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:57,680 INFO L82 PathProgramCache]: Analyzing trace with hash -138461554, now seen corresponding path program 1 times [2021-08-27 07:52:57,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:57,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165137928] [2021-08-27 07:52:57,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:57,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:57,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:57,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 07:52:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-08-27 07:52:57,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:57,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165137928] [2021-08-27 07:52:57,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165137928] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:57,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143393730] [2021-08-27 07:52:57,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:57,803 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:57,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:57,803 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:52:57,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-27 07:52:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:58,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 07:52:58,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:58,282 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-08-27 07:52:58,282 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 [2021-08-27 07:52:59,496 INFO L354 Elim1Store]: treesize reduction 120, result has 29.0 percent of original size [2021-08-27 07:52:59,496 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 [2021-08-27 07:53:01,626 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-08-27 07:53:01,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143393730] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:53:01,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:53:01,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-08-27 07:53:01,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367879902] [2021-08-27 07:53:01,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 07:53:01,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:53:01,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 07:53:01,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:53:01,628 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) [2021-08-27 07:53:10,689 WARN L207 SmtUtils]: Spent 7.96 s on a formula simplification that was a NOOP. DAG size: 97 [2021-08-27 07:53:19,537 WARN L224 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-08-27 07:53:19,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-08-27 07:53:19,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-08-27 07:53:19,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:53:19,740 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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:310) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:154) 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:881) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:778) 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:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) 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:152) ... 35 more [2021-08-27 07:53:19,744 INFO L168 Benchmark]: Toolchain (without parser) took 64952.55 ms. Allocated memory was 60.8 MB in the beginning and 318.8 MB in the end (delta: 257.9 MB). Free memory was 39.8 MB in the beginning and 254.6 MB in the end (delta: -214.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 16.1 GB. [2021-08-27 07:53:19,745 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 60.8 MB. Free memory was 43.1 MB in the beginning and 43.1 MB in the end (delta: 58.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 07:53:19,745 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.05 ms. Allocated memory is still 60.8 MB. Free memory was 39.6 MB in the beginning and 35.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 07:53:19,745 INFO L168 Benchmark]: Boogie Preprocessor took 37.27 ms. Allocated memory is still 60.8 MB. Free memory was 35.6 MB in the beginning and 32.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 07:53:19,745 INFO L168 Benchmark]: RCFGBuilder took 515.72 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 32.4 MB in the beginning and 43.6 MB in the end (delta: -11.2 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2021-08-27 07:53:19,745 INFO L168 Benchmark]: TraceAbstraction took 64046.82 ms. Allocated memory was 86.0 MB in the beginning and 318.8 MB in the end (delta: 232.8 MB). Free memory was 42.7 MB in the beginning and 254.6 MB in the end (delta: -211.9 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-08-27 07:53:19,746 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 60.8 MB. Free memory was 43.1 MB in the beginning and 43.1 MB in the end (delta: 58.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 349.05 ms. Allocated memory is still 60.8 MB. Free memory was 39.6 MB in the beginning and 35.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.27 ms. Allocated memory is still 60.8 MB. Free memory was 35.6 MB in the beginning and 32.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 515.72 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 32.4 MB in the beginning and 43.6 MB in the end (delta: -11.2 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 64046.82 ms. Allocated memory was 86.0 MB in the beginning and 318.8 MB in the end (delta: 232.8 MB). Free memory was 42.7 MB in the beginning and 254.6 MB in the end (delta: -211.9 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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:310) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 07:53:21,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 07:53:21,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 07:53:21,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 07:53:21,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 07:53:21,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 07:53:21,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 07:53:21,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 07:53:21,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 07:53:21,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 07:53:21,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 07:53:21,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 07:53:21,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 07:53:21,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 07:53:21,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 07:53:21,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 07:53:21,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 07:53:21,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 07:53:21,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 07:53:21,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 07:53:21,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 07:53:21,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 07:53:21,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 07:53:21,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 07:53:21,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 07:53:21,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 07:53:21,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 07:53:21,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 07:53:21,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 07:53:21,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 07:53:21,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 07:53:21,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 07:53:21,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 07:53:21,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 07:53:21,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 07:53:21,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 07:53:21,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 07:53:21,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 07:53:21,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 07:53:21,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 07:53:21,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 07:53:21,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 07:53:21,155 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 07:53:21,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 07:53:21,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 07:53:21,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 07:53:21,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 07:53:21,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 07:53:21,157 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 07:53:21,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 07:53:21,157 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 07:53:21,158 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 07:53:21,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 07:53:21,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 07:53:21,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 07:53:21,158 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 07:53:21,158 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 07:53:21,159 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 07:53:21,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 07:53:21,159 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 07:53:21,159 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 07:53:21,159 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 07:53:21,159 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 07:53:21,159 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 07:53:21,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 07:53:21,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 07:53:21,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 07:53:21,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:53:21,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 07:53:21,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 07:53:21,160 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 07:53:21,160 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 07:53:21,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 07:53:21,160 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 07:53:21,160 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b34e199f0da2018b0ae97fc3f9a24725315a1b16 [2021-08-27 07:53:21,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 07:53:21,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 07:53:21,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 07:53:21,393 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 07:53:21,393 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 07:53:21,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-bftpd/bftpd_3.i [2021-08-27 07:53:21,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fba929aa4/f3453456b0cf45d8b327e235ccc75668/FLAGc046ceafe [2021-08-27 07:53:21,854 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 07:53:21,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-bftpd/bftpd_3.i [2021-08-27 07:53:21,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fba929aa4/f3453456b0cf45d8b327e235ccc75668/FLAGc046ceafe [2021-08-27 07:53:21,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fba929aa4/f3453456b0cf45d8b327e235ccc75668 [2021-08-27 07:53:21,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 07:53:21,879 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 07:53:21,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 07:53:21,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 07:53:21,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 07:53:21,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:53:21" (1/1) ... [2021-08-27 07:53:21,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66abdef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:21, skipping insertion in model container [2021-08-27 07:53:21,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:53:21" (1/1) ... [2021-08-27 07:53:21,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 07:53:21,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 07:53:22,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:53:22,204 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 07:53:22,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:53:22,287 INFO L208 MainTranslator]: Completed translation [2021-08-27 07:53:22,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:22 WrapperNode [2021-08-27 07:53:22,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 07:53:22,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 07:53:22,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 07:53:22,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 07:53:22,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:22" (1/1) ... [2021-08-27 07:53:22,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:22" (1/1) ... [2021-08-27 07:53:22,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:22" (1/1) ... [2021-08-27 07:53:22,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:22" (1/1) ... [2021-08-27 07:53:22,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:22" (1/1) ... [2021-08-27 07:53:22,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:22" (1/1) ... [2021-08-27 07:53:22,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:22" (1/1) ... [2021-08-27 07:53:22,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 07:53:22,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 07:53:22,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 07:53:22,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 07:53:22,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:22" (1/1) ... [2021-08-27 07:53:22,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:53:22,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:53:22,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 07:53:22,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 07:53:22,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 07:53:22,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 07:53:22,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-08-27 07:53:22,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 07:53:22,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 07:53:22,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 07:53:22,444 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-08-27 07:53:22,444 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-08-27 07:53:22,445 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-08-27 07:53:22,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 07:53:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 07:53:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 07:53:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 07:53:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 07:53:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 07:53:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 07:53:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 07:53:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 07:53:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 07:53:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 07:53:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 07:53:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 07:53:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 07:53:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 07:53:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 07:53:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 07:53:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 07:53:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 07:53:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 07:53:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 07:53:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 07:53:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 07:53:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 07:53:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 07:53:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 07:53:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 07:53:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 07:53:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 07:53:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 07:53:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 07:53:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 07:53:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 07:53:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 07:53:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 07:53:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 07:53:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 07:53:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 07:53:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 07:53:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 07:53:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 07:53:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 07:53:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 07:53:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 07:53:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 07:53:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 07:53:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 07:53:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 07:53:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 07:53:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 07:53:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 07:53:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 07:53:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 07:53:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 07:53:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 07:53:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 07:53:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 07:53:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-27 07:53:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 07:53:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 07:53:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 07:53:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 07:53:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 07:53:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 07:53:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 07:53:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 07:53:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 07:53:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 07:53:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 07:53:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 07:53:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 07:53:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 07:53:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 07:53:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 07:53:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 07:53:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 07:53:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 07:53:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 07:53:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 07:53:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 07:53:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 07:53:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 07:53:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 07:53:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 07:53:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 07:53:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 07:53:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 07:53:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 07:53:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 07:53:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 07:53:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 07:53:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 07:53:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 07:53:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 07:53:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 07:53:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 07:53:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 07:53:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 07:53:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 07:53:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 07:53:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 07:53:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 07:53:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 07:53:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 07:53:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 07:53:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 07:53:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 07:53:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-27 07:53:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-27 07:53:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 07:53:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-27 07:53:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-27 07:53:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-27 07:53:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-27 07:53:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-27 07:53:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-27 07:53:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-27 07:53:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-27 07:53:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-27 07:53:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-27 07:53:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-27 07:53:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-27 07:53:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-27 07:53:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-27 07:53:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-27 07:53:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-27 07:53:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-27 07:53:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-27 07:53:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-27 07:53:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-27 07:53:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-27 07:53:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-27 07:53:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-27 07:53:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-27 07:53:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-27 07:53:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-27 07:53:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-27 07:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 07:53:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 07:53:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 07:53:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 07:53:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-27 07:53:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 07:53:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 07:53:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 07:53:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 07:53:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-27 07:53:23,112 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 07:53:23,113 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-27 07:53:23,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:53:23 BoogieIcfgContainer [2021-08-27 07:53:23,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 07:53:23,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 07:53:23,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 07:53:23,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 07:53:23,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:53:21" (1/3) ... [2021-08-27 07:53:23,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ddacc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:53:23, skipping insertion in model container [2021-08-27 07:53:23,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:53:22" (2/3) ... [2021-08-27 07:53:23,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ddacc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:53:23, skipping insertion in model container [2021-08-27 07:53:23,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:53:23" (3/3) ... [2021-08-27 07:53:23,119 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_3.i [2021-08-27 07:53:23,122 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 07:53:23,123 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-08-27 07:53:23,159 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 07:53:23,162 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, mConcurrency=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 [2021-08-27 07:53:23,163 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-08-27 07:53:23,171 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) [2021-08-27 07:53:23,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 07:53:23,181 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:23,181 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:53:23,182 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 07:53:23,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:23,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1137100954, now seen corresponding path program 1 times [2021-08-27 07:53:23,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:53:23,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464850316] [2021-08-27 07:53:23,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:23,195 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:53:23,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:53:23,209 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 07:53:23,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-27 07:53:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:23,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 07:53:23,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:23,934 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-08-27 07:53:23,934 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 [2021-08-27 07:53:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:53:24,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:53:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:53:24,700 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:53:24,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464850316] [2021-08-27 07:53:24,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464850316] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 07:53:24,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:53:24,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 07:53:24,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032583203] [2021-08-27 07:53:24,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 07:53:24,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:53:24,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 07:53:24,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 07:53:24,717 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) [2021-08-27 07:53:24,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:53:24,832 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2021-08-27 07:53:24,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 07:53:24,833 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 [2021-08-27 07:53:24,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:53:24,840 INFO L225 Difference]: With dead ends: 88 [2021-08-27 07:53:24,840 INFO L226 Difference]: Without dead ends: 82 [2021-08-27 07:53:24,841 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 07:53:24,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-08-27 07:53:24,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2021-08-27 07:53:24,865 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) [2021-08-27 07:53:24,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2021-08-27 07:53:24,868 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 9 [2021-08-27 07:53:24,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:53:24,868 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2021-08-27 07:53:24,868 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) [2021-08-27 07:53:24,868 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2021-08-27 07:53:24,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 07:53:24,869 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:24,869 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:53:24,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-27 07:53:25,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 07:53:25,076 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c2Err0ASSERT_VIOLATIONMEMORY_FREE, c2Err1ASSERT_VIOLATIONMEMORY_FREE, c2Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err3ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-08-27 07:53:25,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:25,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1137100953, now seen corresponding path program 1 times [2021-08-27 07:53:25,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:53:25,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621329408] [2021-08-27 07:53:25,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:25,078 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:53:25,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:53:25,082 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 07:53:25,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-27 07:53:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:25,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 07:53:25,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:25,557 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-08-27 07:53:25,557 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 [2021-08-27 07:53:25,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:53:25,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:53:25,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:53:25,944 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:53:25,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621329408] [2021-08-27 07:53:25,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621329408] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 07:53:25,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:53:25,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-27 07:53:25,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050017584] [2021-08-27 07:53:25,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 07:53:25,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:53:25,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 07:53:25,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-27 07:53:25,947 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) [2021-08-27 07:53:26,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:53:26,366 INFO L93 Difference]: Finished difference Result 164 states and 208 transitions. [2021-08-27 07:53:26,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 07:53:26,367 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 [2021-08-27 07:53:26,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:53:26,368 INFO L225 Difference]: With dead ends: 164 [2021-08-27 07:53:26,368 INFO L226 Difference]: Without dead ends: 164 [2021-08-27 07:53:26,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 105.6ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-08-27 07:53:26,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-08-27 07:53:26,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 132. [2021-08-27 07:53:26,379 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) [2021-08-27 07:53:26,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 187 transitions. [2021-08-27 07:53:26,381 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 187 transitions. Word has length 9 [2021-08-27 07:53:26,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:53:26,381 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 187 transitions. [2021-08-27 07:53:26,382 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) [2021-08-27 07:53:26,382 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 187 transitions. [2021-08-27 07:53:26,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 07:53:26,382 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:26,382 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:53:26,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-27 07:53:26,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 07:53:26,591 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)] === [2021-08-27 07:53:26,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:26,591 INFO L82 PathProgramCache]: Analyzing trace with hash -890391164, now seen corresponding path program 1 times [2021-08-27 07:53:26,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:53:26,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009726829] [2021-08-27 07:53:26,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:26,592 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:53:26,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:53:26,593 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 07:53:26,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-27 07:53:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:26,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-27 07:53:26,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:27,208 INFO L354 Elim1Store]: treesize reduction 463, result has 13.5 percent of original size [2021-08-27 07:53:27,209 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 [2021-08-27 07:53:31,566 INFO L354 Elim1Store]: treesize reduction 36, result has 41.0 percent of original size [2021-08-27 07:53:31,566 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 [2021-08-27 07:53:40,168 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 [2021-08-27 07:53:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:53:41,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:53:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:53:42,264 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:53:42,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009726829] [2021-08-27 07:53:42,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009726829] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 07:53:42,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:53:42,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-08-27 07:53:42,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465779003] [2021-08-27 07:53:42,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 07:53:42,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:53:42,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 07:53:42,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:53:42,265 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) [2021-08-27 07:53:44,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:53:44,169 INFO L93 Difference]: Finished difference Result 245 states and 348 transitions. [2021-08-27 07:53:44,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 07:53:44,170 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 [2021-08-27 07:53:44,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:53:44,171 INFO L225 Difference]: With dead ends: 245 [2021-08-27 07:53:44,171 INFO L226 Difference]: Without dead ends: 245 [2021-08-27 07:53:44,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1234.1ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:53:44,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-08-27 07:53:44,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 192. [2021-08-27 07:53:44,183 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) [2021-08-27 07:53:44,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 284 transitions. [2021-08-27 07:53:44,184 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 284 transitions. Word has length 10 [2021-08-27 07:53:44,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:53:44,185 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 284 transitions. [2021-08-27 07:53:44,185 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) [2021-08-27 07:53:44,185 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 284 transitions. [2021-08-27 07:53:44,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 07:53:44,185 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:44,185 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:53:44,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-27 07:53:44,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 07:53:44,393 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)] === [2021-08-27 07:53:44,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:44,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1832322202, now seen corresponding path program 1 times [2021-08-27 07:53:44,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:53:44,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83330119] [2021-08-27 07:53:44,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:44,394 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:53:44,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:53:44,395 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 07:53:44,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-27 07:53:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:44,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-27 07:53:44,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:45,053 INFO L354 Elim1Store]: treesize reduction 336, result has 13.8 percent of original size [2021-08-27 07:53:45,053 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 [2021-08-27 07:53:45,062 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-27 07:53:45,063 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 [2021-08-27 07:53:47,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-27 07:53:47,548 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-08-27 07:53:47,548 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 [2021-08-27 07:53:52,453 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 [2021-08-27 07:53:52,457 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 [2021-08-27 07:53:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:53:55,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:53:55,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:53:55,948 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:53:55,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83330119] [2021-08-27 07:53:55,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83330119] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 07:53:55,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:53:55,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-08-27 07:53:55,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421345705] [2021-08-27 07:53:55,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 07:53:55,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:53:55,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 07:53:55,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:53:55,949 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) [2021-08-27 07:53:57,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:53:57,380 INFO L93 Difference]: Finished difference Result 337 states and 445 transitions. [2021-08-27 07:53:57,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 07:53:57,381 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 [2021-08-27 07:53:57,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:53:57,383 INFO L225 Difference]: With dead ends: 337 [2021-08-27 07:53:57,383 INFO L226 Difference]: Without dead ends: 337 [2021-08-27 07:53:57,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 697.5ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:53:57,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-08-27 07:53:57,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 268. [2021-08-27 07:53:57,396 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) [2021-08-27 07:53:57,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 398 transitions. [2021-08-27 07:53:57,398 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 398 transitions. Word has length 11 [2021-08-27 07:53:57,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:53:57,399 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 398 transitions. [2021-08-27 07:53:57,399 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) [2021-08-27 07:53:57,399 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 398 transitions. [2021-08-27 07:53:57,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 07:53:57,399 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:57,399 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:53:57,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-08-27 07:53:57,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 07:53:57,608 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)] === [2021-08-27 07:53:57,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:57,608 INFO L82 PathProgramCache]: Analyzing trace with hash -967413306, now seen corresponding path program 1 times [2021-08-27 07:53:57,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:53:57,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079478618] [2021-08-27 07:53:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:57,609 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:53:57,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:53:57,609 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 07:53:57,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-27 07:53:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:58,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 07:53:58,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:58,302 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-08-27 07:53:58,303 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 [2021-08-27 07:54:00,934 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 07:54:00,935 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 [2021-08-27 07:54:08,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:54:08,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:54:09,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:54:09,047 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:54:09,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079478618] [2021-08-27 07:54:09,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079478618] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 07:54:09,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:54:09,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-08-27 07:54:09,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834163075] [2021-08-27 07:54:09,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 07:54:09,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:54:09,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 07:54:09,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:54:09,048 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) [2021-08-27 07:54:18,003 WARN L207 SmtUtils]: Spent 8.65 s on a formula simplification that was a NOOP. DAG size: 102 [2021-08-27 07:54:38,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-08-27 07:54:38,864 WARN L224 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-08-27 07:54:38,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-27 07:54:39,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 07:54:39,066 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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:310) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:154) 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:881) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:778) 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:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) 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:152) ... 35 more [2021-08-27 07:54:39,068 INFO L168 Benchmark]: Toolchain (without parser) took 77189.08 ms. Allocated memory was 54.5 MB in the beginning and 174.1 MB in the end (delta: 119.5 MB). Free memory was 30.3 MB in the beginning and 50.1 MB in the end (delta: -19.9 MB). Peak memory consumption was 100.4 MB. Max. memory is 16.1 GB. [2021-08-27 07:54:39,068 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 54.5 MB. Free memory was 36.9 MB in the beginning and 36.9 MB in the end (delta: 36.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 07:54:39,068 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.21 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 40.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-08-27 07:54:39,070 INFO L168 Benchmark]: Boogie Preprocessor took 81.03 ms. Allocated memory is still 67.1 MB. Free memory was 40.0 MB in the beginning and 36.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 07:54:39,070 INFO L168 Benchmark]: RCFGBuilder took 743.28 ms. Allocated memory is still 67.1 MB. Free memory was 36.5 MB in the beginning and 41.9 MB in the end (delta: -5.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-08-27 07:54:39,070 INFO L168 Benchmark]: TraceAbstraction took 75951.52 ms. Allocated memory was 67.1 MB in the beginning and 174.1 MB in the end (delta: 107.0 MB). Free memory was 41.5 MB in the beginning and 50.1 MB in the end (delta: -8.6 MB). Peak memory consumption was 97.7 MB. Max. memory is 16.1 GB. [2021-08-27 07:54:39,072 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 54.5 MB. Free memory was 36.9 MB in the beginning and 36.9 MB in the end (delta: 36.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 409.21 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 40.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.03 ms. Allocated memory is still 67.1 MB. Free memory was 40.0 MB in the beginning and 36.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 743.28 ms. Allocated memory is still 67.1 MB. Free memory was 36.5 MB in the beginning and 41.9 MB in the end (delta: -5.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 75951.52 ms. Allocated memory was 67.1 MB in the beginning and 174.1 MB in the end (delta: 107.0 MB). Free memory was 41.5 MB in the beginning and 50.1 MB in the end (delta: -8.6 MB). Peak memory consumption was 97.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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:310) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...