./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) 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_1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0b33005346e6b80bc2289c235b2b7a5c7f83b2de .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0b33005346e6b80bc2289c235b2b7a5c7f83b2de .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 04:28:39,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 04:28:39,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 04:28:39,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 04:28:39,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 04:28:39,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 04:28:39,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 04:28:39,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 04:28:39,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 04:28:39,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 04:28:39,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 04:28:39,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 04:28:39,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 04:28:39,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 04:28:39,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 04:28:39,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 04:28:39,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 04:28:39,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 04:28:39,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 04:28:39,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 04:28:39,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 04:28:39,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 04:28:39,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 04:28:39,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 04:28:39,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 04:28:39,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 04:28:39,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 04:28:39,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 04:28:39,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 04:28:39,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 04:28:39,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 04:28:39,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 04:28:39,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 04:28:39,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 04:28:39,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 04:28:39,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 04:28:39,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 04:28:39,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 04:28:39,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 04:28:39,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 04:28:39,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 04:28:39,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-08-27 04:28:39,939 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 04:28:39,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 04:28:39,940 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 04:28:39,940 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 04:28:39,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 04:28:39,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 04:28:39,941 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 04:28:39,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 04:28:39,942 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 04:28:39,942 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 04:28:39,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 04:28:39,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 04:28:39,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 04:28:39,942 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 04:28:39,942 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 04:28:39,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 04:28:39,943 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 04:28:39,943 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 04:28:39,943 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 04:28:39,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 04:28:39,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 04:28:39,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 04:28:39,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:28:39,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 04:28:39,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 04:28:39,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 04:28:39,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 04:28:39,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 04:28:39,944 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b33005346e6b80bc2289c235b2b7a5c7f83b2de [2021-08-27 04:28:40,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 04:28:40,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 04:28:40,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 04:28:40,233 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 04:28:40,234 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 04:28:40,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-08-27 04:28:40,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da3a21bad/080ef49e121344ecb9a46e1380ce008d/FLAGdb9085342 [2021-08-27 04:28:40,906 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 04:28:40,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-08-27 04:28:40,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da3a21bad/080ef49e121344ecb9a46e1380ce008d/FLAGdb9085342 [2021-08-27 04:28:41,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da3a21bad/080ef49e121344ecb9a46e1380ce008d [2021-08-27 04:28:41,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 04:28:41,232 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 04:28:41,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 04:28:41,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 04:28:41,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 04:28:41,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:28:41" (1/1) ... [2021-08-27 04:28:41,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d29c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:28:41, skipping insertion in model container [2021-08-27 04:28:41,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:28:41" (1/1) ... [2021-08-27 04:28:41,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 04:28:41,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 04:28:41,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:28:41,527 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 04:28:41,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:28:41,659 INFO L208 MainTranslator]: Completed translation [2021-08-27 04:28:41,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:28:41 WrapperNode [2021-08-27 04:28:41,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 04:28:41,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 04:28:41,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 04:28:41,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 04:28:41,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:28:41" (1/1) ... [2021-08-27 04:28:41,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:28:41" (1/1) ... [2021-08-27 04:28:41,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:28:41" (1/1) ... [2021-08-27 04:28:41,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:28:41" (1/1) ... [2021-08-27 04:28:41,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:28:41" (1/1) ... [2021-08-27 04:28:41,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:28:41" (1/1) ... [2021-08-27 04:28:41,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:28:41" (1/1) ... [2021-08-27 04:28:41,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 04:28:41,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 04:28:41,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 04:28:41,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 04:28:41,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:28:41" (1/1) ... [2021-08-27 04:28:41,757 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:28:41,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:28:41,786 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 04:28:41,800 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 04:28:41,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 04:28:41,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 04:28:41,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-08-27 04:28:41,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 04:28:41,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 04:28:41,831 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-08-27 04:28:41,831 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-08-27 04:28:41,831 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-08-27 04:28:41,832 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 04:28:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 04:28:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 04:28:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 04:28:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 04:28:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 04:28:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 04:28:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 04:28:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 04:28:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 04:28:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 04:28:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 04:28:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 04:28:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 04:28:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 04:28:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 04:28:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 04:28:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 04:28:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 04:28:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 04:28:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 04:28:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 04:28:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 04:28:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 04:28:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 04:28:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 04:28:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 04:28:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 04:28:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 04:28:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 04:28:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 04:28:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 04:28:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 04:28:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 04:28:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 04:28:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 04:28:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 04:28:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 04:28:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 04:28:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 04:28:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 04:28:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 04:28:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 04:28:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 04:28:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 04:28:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 04:28:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 04:28:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 04:28:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 04:28:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 04:28:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 04:28:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 04:28:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 04:28:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 04:28:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 04:28:41,845 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 04:28:41,845 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 04:28:41,845 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-27 04:28:41,845 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 04:28:41,845 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 04:28:41,846 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 04:28:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 04:28:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 04:28:41,848 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 04:28:41,848 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 04:28:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 04:28:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 04:28:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 04:28:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 04:28:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 04:28:41,850 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 04:28:41,850 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 04:28:41,850 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 04:28:41,850 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 04:28:41,851 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 04:28:41,851 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 04:28:41,851 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 04:28:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 04:28:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 04:28:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 04:28:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 04:28:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 04:28:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 04:28:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 04:28:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 04:28:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 04:28:41,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 04:28:41,856 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 04:28:41,858 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 04:28:41,858 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 04:28:41,858 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 04:28:41,858 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 04:28:41,858 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 04:28:41,858 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 04:28:41,858 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 04:28:41,858 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 04:28:41,858 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 04:28:41,858 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 04:28:41,858 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 04:28:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 04:28:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 04:28:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 04:28:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 04:28:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 04:28:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 04:28:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 04:28:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 04:28:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-27 04:28:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-27 04:28:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 04:28:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-27 04:28:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-27 04:28:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-27 04:28:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-27 04:28:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-27 04:28:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-27 04:28:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-27 04:28:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-27 04:28:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-27 04:28:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-27 04:28:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-27 04:28:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-27 04:28:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-27 04:28:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-27 04:28:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-27 04:28:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-27 04:28:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-27 04:28:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-27 04:28:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-27 04:28:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-27 04:28:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-27 04:28:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-27 04:28:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-27 04:28:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-27 04:28:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-27 04:28:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-27 04:28:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-27 04:28:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-27 04:28:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-08-27 04:28:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-27 04:28:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-27 04:28:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-27 04:28:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-27 04:28:41,862 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-27 04:28:41,862 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-27 04:28:41,862 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-27 04:28:41,870 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-27 04:28:41,870 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-27 04:28:41,870 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-27 04:28:41,870 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-27 04:28:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-27 04:28:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-27 04:28:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-27 04:28:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-08-27 04:28:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-08-27 04:28:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 04:28:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-08-27 04:28:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-08-27 04:28:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 04:28:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 04:28:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 04:28:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 04:28:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 04:28:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 04:28:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 04:28:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 04:28:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 04:28:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 04:28:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 04:28:42,531 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 04:28:42,532 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-27 04:28:42,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:28:42 BoogieIcfgContainer [2021-08-27 04:28:42,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 04:28:42,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 04:28:42,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 04:28:42,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 04:28:42,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:28:41" (1/3) ... [2021-08-27 04:28:42,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6281052c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:28:42, skipping insertion in model container [2021-08-27 04:28:42,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:28:41" (2/3) ... [2021-08-27 04:28:42,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6281052c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:28:42, skipping insertion in model container [2021-08-27 04:28:42,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:28:42" (3/3) ... [2021-08-27 04:28:42,544 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2021-08-27 04:28:42,549 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 04:28:42,550 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-08-27 04:28:42,596 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 04:28:42,606 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 04:28:42,606 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-08-27 04:28:42,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 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 04:28:42,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 04:28:42,632 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:28:42,632 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:28:42,633 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 04:28:42,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:28:42,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1891287210, now seen corresponding path program 1 times [2021-08-27 04:28:42,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:28:42,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120756113] [2021-08-27 04:28:42,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:28:42,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:28:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:28:42,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:28:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:28:43,019 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 04:28:43,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:28:43,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120756113] [2021-08-27 04:28:43,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120756113] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:28:43,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:28:43,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 04:28:43,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023027806] [2021-08-27 04:28:43,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 04:28:43,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:28:43,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 04:28:43,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:28:43,045 INFO L87 Difference]: Start difference. First operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 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 04:28:43,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:28:43,490 INFO L93 Difference]: Finished difference Result 106 states and 131 transitions. [2021-08-27 04:28:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 04:28:43,491 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 04:28:43,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:28:43,502 INFO L225 Difference]: With dead ends: 106 [2021-08-27 04:28:43,502 INFO L226 Difference]: Without dead ends: 97 [2021-08-27 04:28:43,504 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 102.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:28:43,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-08-27 04:28:43,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2021-08-27 04:28:43,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 50 states have (on average 1.58) internal successors, (79), 73 states have internal predecessors, (79), 12 states have call successors, (12), 7 states have call predecessors, (12), 10 states have return successors, (28), 12 states have call predecessors, (28), 11 states have call successors, (28) [2021-08-27 04:28:43,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 119 transitions. [2021-08-27 04:28:43,564 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 119 transitions. Word has length 9 [2021-08-27 04:28:43,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:28:43,564 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 119 transitions. [2021-08-27 04:28:43,565 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 04:28:43,565 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 119 transitions. [2021-08-27 04:28:43,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 04:28:43,567 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:28:43,567 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:28:43,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 04:28:43,568 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 04:28:43,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:28:43,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1891287209, now seen corresponding path program 1 times [2021-08-27 04:28:43,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:28:43,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335215036] [2021-08-27 04:28:43,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:28:43,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:28:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:28:43,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:28:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:28:43,829 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 04:28:43,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:28:43,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335215036] [2021-08-27 04:28:43,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335215036] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:28:43,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:28:43,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 04:28:43,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191290635] [2021-08-27 04:28:43,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:28:43,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:28:43,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:28:43,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:28:43,839 INFO L87 Difference]: Start difference. First operand 93 states and 119 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 04:28:44,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:28:44,446 INFO L93 Difference]: Finished difference Result 175 states and 232 transitions. [2021-08-27 04:28:44,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 04:28:44,447 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 04:28:44,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:28:44,449 INFO L225 Difference]: With dead ends: 175 [2021-08-27 04:28:44,449 INFO L226 Difference]: Without dead ends: 175 [2021-08-27 04:28:44,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 173.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:28:44,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-08-27 04:28:44,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 144. [2021-08-27 04:28:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 92 states have (on average 1.6195652173913044) internal successors, (149), 115 states have internal predecessors, (149), 17 states have call successors, (17), 11 states have call predecessors, (17), 14 states have return successors, (47), 17 states have call predecessors, (47), 16 states have call successors, (47) [2021-08-27 04:28:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 213 transitions. [2021-08-27 04:28:44,472 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 213 transitions. Word has length 9 [2021-08-27 04:28:44,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:28:44,472 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 213 transitions. [2021-08-27 04:28:44,473 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 04:28:44,473 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 213 transitions. [2021-08-27 04:28:44,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 04:28:44,473 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:28:44,473 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:28:44,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 04:28:44,474 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 04:28:44,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:28:44,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1499638660, now seen corresponding path program 1 times [2021-08-27 04:28:44,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:28:44,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298851560] [2021-08-27 04:28:44,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:28:44,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:28:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:28:44,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:28:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:28:44,783 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 04:28:44,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:28:44,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298851560] [2021-08-27 04:28:44,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298851560] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:28:44,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:28:44,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 04:28:44,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547610471] [2021-08-27 04:28:44,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 04:28:44,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:28:44,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 04:28:44,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:28:44,786 INFO L87 Difference]: Start difference. First operand 144 states and 213 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 04:28:45,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:28:45,545 INFO L93 Difference]: Finished difference Result 262 states and 378 transitions. [2021-08-27 04:28:45,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 04:28:45,545 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 04:28:45,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:28:45,550 INFO L225 Difference]: With dead ends: 262 [2021-08-27 04:28:45,550 INFO L226 Difference]: Without dead ends: 262 [2021-08-27 04:28:45,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 317.9ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-08-27 04:28:45,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-08-27 04:28:45,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 202. [2021-08-27 04:28:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 141 states have (on average 1.6170212765957446) internal successors, (228), 165 states have internal predecessors, (228), 21 states have call successors, (21), 16 states have call predecessors, (21), 19 states have return successors, (57), 20 states have call predecessors, (57), 20 states have call successors, (57) [2021-08-27 04:28:45,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 306 transitions. [2021-08-27 04:28:45,570 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 306 transitions. Word has length 10 [2021-08-27 04:28:45,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:28:45,570 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 306 transitions. [2021-08-27 04:28:45,570 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 04:28:45,570 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 306 transitions. [2021-08-27 04:28:45,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 04:28:45,571 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:28:45,571 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:28:45,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 04:28:45,572 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 04:28:45,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:28:45,572 INFO L82 PathProgramCache]: Analyzing trace with hash -755841706, now seen corresponding path program 1 times [2021-08-27 04:28:45,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:28:45,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789579925] [2021-08-27 04:28:45,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:28:45,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:28:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:28:45,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:28:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:28:45,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:28:45,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:28:45,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789579925] [2021-08-27 04:28:45,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789579925] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:28:45,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:28:45,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:28:45,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554869945] [2021-08-27 04:28:45,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 04:28:45,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:28:45,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 04:28:45,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:28:45,925 INFO L87 Difference]: Start difference. First operand 202 states and 306 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 04:28:46,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:28:46,819 INFO L93 Difference]: Finished difference Result 236 states and 332 transitions. [2021-08-27 04:28:46,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 04:28:46,820 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 04:28:46,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:28:46,823 INFO L225 Difference]: With dead ends: 236 [2021-08-27 04:28:46,824 INFO L226 Difference]: Without dead ends: 236 [2021-08-27 04:28:46,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 415.8ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-08-27 04:28:46,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-08-27 04:28:46,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 202. [2021-08-27 04:28:46,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 141 states have (on average 1.6028368794326242) internal successors, (226), 165 states have internal predecessors, (226), 21 states have call successors, (21), 16 states have call predecessors, (21), 19 states have return successors, (57), 20 states have call predecessors, (57), 20 states have call successors, (57) [2021-08-27 04:28:46,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 304 transitions. [2021-08-27 04:28:46,868 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 304 transitions. Word has length 11 [2021-08-27 04:28:46,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:28:46,869 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 304 transitions. [2021-08-27 04:28:46,869 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 04:28:46,869 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 304 transitions. [2021-08-27 04:28:46,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 04:28:46,870 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:28:46,870 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:28:46,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 04:28:46,870 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 04:28:46,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:28:46,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1956256314, now seen corresponding path program 1 times [2021-08-27 04:28:46,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:28:46,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944883039] [2021-08-27 04:28:46,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:28:46,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:28:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:28:47,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:28:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:28:47,047 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 04:28:47,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:28:47,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944883039] [2021-08-27 04:28:47,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944883039] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:28:47,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:28:47,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:28:47,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632664491] [2021-08-27 04:28:47,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 04:28:47,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:28:47,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 04:28:47,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:28:47,052 INFO L87 Difference]: Start difference. First operand 202 states and 304 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 04:28:47,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:28:47,835 INFO L93 Difference]: Finished difference Result 287 states and 397 transitions. [2021-08-27 04:28:47,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 04:28:47,836 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 04:28:47,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:28:47,838 INFO L225 Difference]: With dead ends: 287 [2021-08-27 04:28:47,838 INFO L226 Difference]: Without dead ends: 287 [2021-08-27 04:28:47,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 366.0ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-08-27 04:28:47,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-08-27 04:28:47,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 233. [2021-08-27 04:28:47,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 170 states have (on average 1.5823529411764705) internal successors, (269), 195 states have internal predecessors, (269), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-08-27 04:28:47,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 348 transitions. [2021-08-27 04:28:47,853 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 348 transitions. Word has length 12 [2021-08-27 04:28:47,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:28:47,853 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 348 transitions. [2021-08-27 04:28:47,854 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 04:28:47,854 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 348 transitions. [2021-08-27 04:28:47,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-27 04:28:47,854 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:28:47,854 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:28:47,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 04:28:47,855 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 04:28:47,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:28:47,855 INFO L82 PathProgramCache]: Analyzing trace with hash -514403496, now seen corresponding path program 1 times [2021-08-27 04:28:47,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:28:47,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412757134] [2021-08-27 04:28:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:28:47,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:28:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:28:48,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:28:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:28:48,074 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 04:28:48,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:28:48,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412757134] [2021-08-27 04:28:48,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412757134] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:28:48,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:28:48,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:28:48,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541612966] [2021-08-27 04:28:48,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 04:28:48,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:28:48,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 04:28:48,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:28:48,077 INFO L87 Difference]: Start difference. First operand 233 states and 348 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 04:28:48,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:28:48,786 INFO L93 Difference]: Finished difference Result 265 states and 363 transitions. [2021-08-27 04:28:48,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 04:28:48,787 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 04:28:48,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:28:48,789 INFO L225 Difference]: With dead ends: 265 [2021-08-27 04:28:48,789 INFO L226 Difference]: Without dead ends: 265 [2021-08-27 04:28:48,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 363.4ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-27 04:28:48,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-08-27 04:28:48,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 233. [2021-08-27 04:28:48,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 170 states have (on average 1.5705882352941176) internal successors, (267), 195 states have internal predecessors, (267), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-08-27 04:28:48,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 346 transitions. [2021-08-27 04:28:48,802 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 346 transitions. Word has length 13 [2021-08-27 04:28:48,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:28:48,803 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 346 transitions. [2021-08-27 04:28:48,803 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 04:28:48,803 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 346 transitions. [2021-08-27 04:28:48,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 04:28:48,803 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:28:48,804 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:28:48,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 04:28:48,804 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 04:28:48,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:28:48,805 INFO L82 PathProgramCache]: Analyzing trace with hash -389968098, now seen corresponding path program 1 times [2021-08-27 04:28:48,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:28:48,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702599656] [2021-08-27 04:28:48,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:28:48,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:28:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:28:48,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:28:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:28:48,959 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 04:28:48,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:28:48,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702599656] [2021-08-27 04:28:48,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702599656] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:28:48,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428781821] [2021-08-27 04:28:48,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:28:48,960 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:28:48,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:28:48,965 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 04:28:48,975 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 04:28:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:28:49,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 04:28:49,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:28:49,374 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-08-27 04:28:49,375 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 04:28:49,673 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 04:28:49,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428781821] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:28:49,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 04:28:49,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-08-27 04:28:49,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64226739] [2021-08-27 04:28:49,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 04:28:49,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:28:49,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 04:28:49,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:28:49,675 INFO L87 Difference]: Start difference. First operand 233 states and 346 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 04:28:50,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:28:50,372 INFO L93 Difference]: Finished difference Result 267 states and 370 transitions. [2021-08-27 04:28:50,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 04:28:50,373 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 04:28:50,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:28:50,375 INFO L225 Difference]: With dead ends: 267 [2021-08-27 04:28:50,375 INFO L226 Difference]: Without dead ends: 267 [2021-08-27 04:28:50,375 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 278.9ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-08-27 04:28:50,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-08-27 04:28:50,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 237. [2021-08-27 04:28:50,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 174 states have (on average 1.5114942528735633) internal successors, (263), 199 states have internal predecessors, (263), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-08-27 04:28:50,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 342 transitions. [2021-08-27 04:28:50,385 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 342 transitions. Word has length 17 [2021-08-27 04:28:50,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:28:50,386 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 342 transitions. [2021-08-27 04:28:50,386 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 04:28:50,386 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 342 transitions. [2021-08-27 04:28:50,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-27 04:28:50,387 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:28:50,387 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:28:50,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 04:28:50,601 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 04:28:50,601 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 04:28:50,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:28:50,601 INFO L82 PathProgramCache]: Analyzing trace with hash 795890845, now seen corresponding path program 1 times [2021-08-27 04:28:50,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:28:50,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632773972] [2021-08-27 04:28:50,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:28:50,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:28:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:28:50,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:28:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:28:50,923 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 04:28:50,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:28:50,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632773972] [2021-08-27 04:28:50,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632773972] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:28:50,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869475878] [2021-08-27 04:28:50,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:28:50,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:28:50,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:28:50,929 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 04:28:50,949 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 04:28:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:28:51,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-27 04:28:51,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:28:51,366 INFO L354 Elim1Store]: treesize reduction 497, result has 11.1 percent of original size [2021-08-27 04:28:51,367 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 74 treesize of output 108 [2021-08-27 04:28:59,728 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 90 treesize of output 66 [2021-08-27 04:29:00,169 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 04:29:00,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869475878] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:29:00,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 04:29:00,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 14 [2021-08-27 04:29:00,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200915322] [2021-08-27 04:29:00,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 04:29:00,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:29:00,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 04:29:00,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-08-27 04:29:00,171 INFO L87 Difference]: Start difference. First operand 237 states and 342 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 3 states have call successors, (6), 5 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 04:29:02,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:02,319 INFO L93 Difference]: Finished difference Result 294 states and 408 transitions. [2021-08-27 04:29:02,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-27 04:29:02,320 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 3 states have call successors, (6), 5 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 04:29:02,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:02,322 INFO L225 Difference]: With dead ends: 294 [2021-08-27 04:29:02,322 INFO L226 Difference]: Without dead ends: 294 [2021-08-27 04:29:02,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 897.9ms TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-08-27 04:29:02,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-08-27 04:29:02,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 243. [2021-08-27 04:29:02,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 180 states have (on average 1.5) internal successors, (270), 205 states have internal predecessors, (270), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-08-27 04:29:02,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 349 transitions. [2021-08-27 04:29:02,331 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 349 transitions. Word has length 18 [2021-08-27 04:29:02,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:02,331 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 349 transitions. [2021-08-27 04:29:02,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 3 states have call successors, (6), 5 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 04:29:02,332 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 349 transitions. [2021-08-27 04:29:02,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 04:29:02,332 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:02,333 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:29:02,360 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 04:29:02,556 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 04:29:02,557 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 04:29:02,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:02,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1097187491, now seen corresponding path program 1 times [2021-08-27 04:29:02,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:29:02,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135839677] [2021-08-27 04:29:02,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:02,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:29:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:02,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:29:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:02,944 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 04:29:02,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:29:02,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135839677] [2021-08-27 04:29:02,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135839677] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:29:02,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726165244] [2021-08-27 04:29:02,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:02,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:29:02,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:29:02,951 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 04:29:02,953 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 04:29:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:03,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-27 04:29:03,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:29:03,384 INFO L354 Elim1Store]: treesize reduction 354, result has 14.1 percent of original size [2021-08-27 04:29:03,385 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 48 treesize of output 83 [2021-08-27 04:29:03,399 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 172 treesize of output 164 [2021-08-27 04:29:06,025 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 86 treesize of output 62 [2021-08-27 04:29:06,029 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 59 treesize of output 47 [2021-08-27 04:29:06,542 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 04:29:06,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726165244] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:29:06,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 04:29:06,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-08-27 04:29:06,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735241416] [2021-08-27 04:29:06,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-27 04:29:06,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:29:06,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-27 04:29:06,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-08-27 04:29:06,545 INFO L87 Difference]: Start difference. First operand 243 states and 349 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 04:29:07,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:07,824 INFO L93 Difference]: Finished difference Result 272 states and 374 transitions. [2021-08-27 04:29:07,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 04:29:07,825 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 04:29:07,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:07,827 INFO L225 Difference]: With dead ends: 272 [2021-08-27 04:29:07,827 INFO L226 Difference]: Without dead ends: 272 [2021-08-27 04:29:07,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 764.7ms TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-08-27 04:29:07,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-08-27 04:29:07,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 243. [2021-08-27 04:29:07,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 180 states have (on average 1.4833333333333334) internal successors, (267), 205 states have internal predecessors, (267), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-08-27 04:29:07,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 346 transitions. [2021-08-27 04:29:07,836 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 346 transitions. Word has length 19 [2021-08-27 04:29:07,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:07,836 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 346 transitions. [2021-08-27 04:29:07,836 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 04:29:07,836 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 346 transitions. [2021-08-27 04:29:07,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 04:29:07,837 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:07,837 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 04:29:07,867 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 04:29:08,054 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 04:29:08,055 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting c2Err0ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 04:29:08,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:08,055 INFO L82 PathProgramCache]: Analyzing trace with hash -321978897, now seen corresponding path program 1 times [2021-08-27 04:29:08,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:29:08,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250213210] [2021-08-27 04:29:08,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:08,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:29:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:08,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:29:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:08,145 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 04:29:08,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:29:08,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250213210] [2021-08-27 04:29:08,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250213210] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:29:08,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:29:08,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 04:29:08,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702815418] [2021-08-27 04:29:08,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 04:29:08,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:29:08,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 04:29:08,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:29:08,147 INFO L87 Difference]: Start difference. First operand 243 states and 346 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 04:29:08,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:08,455 INFO L93 Difference]: Finished difference Result 352 states and 523 transitions. [2021-08-27 04:29:08,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 04:29:08,456 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 04:29:08,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:08,460 INFO L225 Difference]: With dead ends: 352 [2021-08-27 04:29:08,460 INFO L226 Difference]: Without dead ends: 352 [2021-08-27 04:29:08,460 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:29:08,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-08-27 04:29:08,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 338. [2021-08-27 04:29:08,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 254 states have (on average 1.5) internal successors, (381), 282 states have internal predecessors, (381), 30 states have call successors, (30), 25 states have call predecessors, (30), 33 states have return successors, (110), 30 states have call predecessors, (110), 29 states have call successors, (110) [2021-08-27 04:29:08,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 521 transitions. [2021-08-27 04:29:08,478 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 521 transitions. Word has length 23 [2021-08-27 04:29:08,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:08,479 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 521 transitions. [2021-08-27 04:29:08,479 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 04:29:08,479 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 521 transitions. [2021-08-27 04:29:08,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 04:29:08,482 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:08,482 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 04:29:08,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-27 04:29:08,482 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting c2Err3ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 04:29:08,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:08,483 INFO L82 PathProgramCache]: Analyzing trace with hash -321978673, now seen corresponding path program 1 times [2021-08-27 04:29:08,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:29:08,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458664802] [2021-08-27 04:29:08,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:08,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:29:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:08,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:29:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:08,580 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 04:29:08,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:29:08,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458664802] [2021-08-27 04:29:08,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458664802] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:29:08,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:29:08,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 04:29:08,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609661348] [2021-08-27 04:29:08,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 04:29:08,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:29:08,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 04:29:08,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:29:08,582 INFO L87 Difference]: Start difference. First operand 338 states and 521 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 04:29:08,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:08,867 INFO L93 Difference]: Finished difference Result 391 states and 559 transitions. [2021-08-27 04:29:08,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 04:29:08,868 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 04:29:08,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:08,871 INFO L225 Difference]: With dead ends: 391 [2021-08-27 04:29:08,871 INFO L226 Difference]: Without dead ends: 391 [2021-08-27 04:29:08,872 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:29:08,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-08-27 04:29:08,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 375. [2021-08-27 04:29:08,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 282 states have (on average 1.4858156028368794) internal successors, (419), 311 states have internal predecessors, (419), 33 states have call successors, (33), 29 states have call predecessors, (33), 39 states have return successors, (101), 34 states have call predecessors, (101), 32 states have call successors, (101) [2021-08-27 04:29:08,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 553 transitions. [2021-08-27 04:29:08,884 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 553 transitions. Word has length 23 [2021-08-27 04:29:08,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:08,884 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 553 transitions. [2021-08-27 04:29:08,885 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 04:29:08,885 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 553 transitions. [2021-08-27 04:29:08,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-27 04:29:08,888 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:08,888 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 04:29:08,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-27 04:29:08,889 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting c2Err1ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 04:29:08,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:08,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1391411157, now seen corresponding path program 1 times [2021-08-27 04:29:08,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:29:08,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787985946] [2021-08-27 04:29:08,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:08,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:29:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:08,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:29:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:08,989 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 04:29:08,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:29:08,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787985946] [2021-08-27 04:29:08,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787985946] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:29:08,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:29:08,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 04:29:08,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069877978] [2021-08-27 04:29:08,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 04:29:08,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:29:08,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 04:29:08,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:29:08,991 INFO L87 Difference]: Start difference. First operand 375 states and 553 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 04:29:09,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:09,299 INFO L93 Difference]: Finished difference Result 390 states and 557 transitions. [2021-08-27 04:29:09,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 04:29:09,300 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 04:29:09,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:09,301 INFO L225 Difference]: With dead ends: 390 [2021-08-27 04:29:09,302 INFO L226 Difference]: Without dead ends: 390 [2021-08-27 04:29:09,302 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:29:09,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-08-27 04:29:09,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 375. [2021-08-27 04:29:09,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 282 states have (on average 1.4787234042553192) internal successors, (417), 311 states have internal predecessors, (417), 33 states have call successors, (33), 29 states have call predecessors, (33), 39 states have return successors, (101), 34 states have call predecessors, (101), 32 states have call successors, (101) [2021-08-27 04:29:09,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 551 transitions. [2021-08-27 04:29:09,313 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 551 transitions. Word has length 24 [2021-08-27 04:29:09,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:09,314 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 551 transitions. [2021-08-27 04:29:09,314 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 04:29:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 551 transitions. [2021-08-27 04:29:09,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-27 04:29:09,317 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:09,317 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 04:29:09,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-27 04:29:09,317 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 04:29:09,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:09,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1350782223, now seen corresponding path program 1 times [2021-08-27 04:29:09,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:29:09,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825930101] [2021-08-27 04:29:09,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:09,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:29:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:09,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:29:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:09,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 04:29:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:09,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 04:29:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:09,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 04:29:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:09,422 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 04:29:09,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:29:09,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825930101] [2021-08-27 04:29:09,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825930101] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:29:09,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:29:09,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:29:09,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283400474] [2021-08-27 04:29:09,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:29:09,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:29:09,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:29:09,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:29:09,427 INFO L87 Difference]: Start difference. First operand 375 states and 551 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 04:29:09,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:09,619 INFO L93 Difference]: Finished difference Result 284 states and 399 transitions. [2021-08-27 04:29:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 04:29:09,620 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 04:29:09,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:09,621 INFO L225 Difference]: With dead ends: 284 [2021-08-27 04:29:09,621 INFO L226 Difference]: Without dead ends: 284 [2021-08-27 04:29:09,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 46.1ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:29:09,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-08-27 04:29:09,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2021-08-27 04:29:09,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 213 states have (on average 1.4507042253521127) internal successors, (309), 238 states have internal predecessors, (309), 26 states have call successors, (26), 23 states have call predecessors, (26), 24 states have return successors, (64), 22 states have call predecessors, (64), 25 states have call successors, (64) [2021-08-27 04:29:09,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 399 transitions. [2021-08-27 04:29:09,632 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 399 transitions. Word has length 33 [2021-08-27 04:29:09,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:09,633 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 399 transitions. [2021-08-27 04:29:09,633 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 04:29:09,633 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 399 transitions. [2021-08-27 04:29:09,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-27 04:29:09,634 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:09,635 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 04:29:09,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-27 04:29:09,635 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 04:29:09,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:09,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1784623764, now seen corresponding path program 1 times [2021-08-27 04:29:09,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:29:09,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820171540] [2021-08-27 04:29:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:09,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:29:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:09,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:29:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:09,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 04:29:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:09,810 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 04:29:09,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:29:09,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820171540] [2021-08-27 04:29:09,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820171540] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:29:09,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63104660] [2021-08-27 04:29:09,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:09,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:29:09,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:29:09,817 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 04:29:09,818 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 04:29:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:10,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 04:29:10,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:29:10,343 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-08-27 04:29:10,343 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 04:29:11,748 INFO L354 Elim1Store]: treesize reduction 120, result has 29.0 percent of original size [2021-08-27 04:29:11,748 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 04:29:14,141 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 04:29:14,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63104660] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:29:14,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 04:29:14,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-08-27 04:29:14,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128106108] [2021-08-27 04:29:14,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 04:29:14,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:29:14,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 04:29:14,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-08-27 04:29:14,143 INFO L87 Difference]: Start difference. First operand 284 states and 399 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 04:29:23,758 WARN L207 SmtUtils]: Spent 8.53 s on a formula simplification that was a NOOP. DAG size: 97 [2021-08-27 04:29:38,048 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 04:29:38,048 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 04:29:38,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-27 04:29:38,264 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 04:29:38,265 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 04:29:38,269 INFO L168 Benchmark]: Toolchain (without parser) took 57037.25 ms. Allocated memory was 56.6 MB in the beginning and 295.7 MB in the end (delta: 239.1 MB). Free memory was 33.1 MB in the beginning and 191.2 MB in the end (delta: -158.1 MB). Peak memory consumption was 82.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:29:38,269 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 38.0 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:29:38,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.17 ms. Allocated memory is still 56.6 MB. Free memory was 33.0 MB in the beginning and 32.8 MB in the end (delta: 212.6 kB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:29:38,270 INFO L168 Benchmark]: Boogie Preprocessor took 82.51 ms. Allocated memory is still 56.6 MB. Free memory was 32.6 MB in the beginning and 29.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:29:38,270 INFO L168 Benchmark]: RCFGBuilder took 789.38 ms. Allocated memory was 56.6 MB in the beginning and 88.1 MB in the end (delta: 31.5 MB). Free memory was 29.3 MB in the beginning and 44.3 MB in the end (delta: -15.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-08-27 04:29:38,270 INFO L168 Benchmark]: TraceAbstraction took 55731.77 ms. Allocated memory was 88.1 MB in the beginning and 295.7 MB in the end (delta: 207.6 MB). Free memory was 43.7 MB in the beginning and 191.2 MB in the end (delta: -147.5 MB). Peak memory consumption was 60.6 MB. Max. memory is 16.1 GB. [2021-08-27 04:29:38,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 38.0 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 427.17 ms. Allocated memory is still 56.6 MB. Free memory was 33.0 MB in the beginning and 32.8 MB in the end (delta: 212.6 kB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 82.51 ms. Allocated memory is still 56.6 MB. Free memory was 32.6 MB in the beginning and 29.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 789.38 ms. Allocated memory was 56.6 MB in the beginning and 88.1 MB in the end (delta: 31.5 MB). Free memory was 29.3 MB in the beginning and 44.3 MB in the end (delta: -15.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 55731.77 ms. Allocated memory was 88.1 MB in the beginning and 295.7 MB in the end (delta: 207.6 MB). Free memory was 43.7 MB in the beginning and 191.2 MB in the end (delta: -147.5 MB). Peak memory consumption was 60.6 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 04:29:39,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 04:29:39,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 04:29:39,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 04:29:39,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 04:29:39,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 04:29:39,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 04:29:39,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 04:29:39,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 04:29:39,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 04:29:39,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 04:29:39,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 04:29:39,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 04:29:39,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 04:29:39,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 04:29:39,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 04:29:39,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 04:29:39,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 04:29:39,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 04:29:39,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 04:29:39,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 04:29:39,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 04:29:39,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 04:29:39,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 04:29:39,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 04:29:39,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 04:29:39,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 04:29:39,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 04:29:39,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 04:29:39,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 04:29:39,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 04:29:39,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 04:29:39,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 04:29:39,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 04:29:39,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 04:29:39,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 04:29:39,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 04:29:39,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 04:29:39,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 04:29:39,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 04:29:39,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 04:29:39,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2021-08-27 04:29:39,974 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 04:29:39,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 04:29:39,975 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 04:29:39,976 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 04:29:39,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 04:29:39,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 04:29:39,978 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 04:29:39,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 04:29:39,978 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 04:29:39,978 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 04:29:39,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 04:29:39,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 04:29:39,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 04:29:39,980 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 04:29:39,980 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 04:29:39,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 04:29:39,980 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 04:29:39,980 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 04:29:39,981 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 04:29:39,981 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 04:29:39,981 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 04:29:39,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 04:29:39,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 04:29:39,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 04:29:39,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:29:39,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 04:29:39,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 04:29:39,982 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 04:29:39,983 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 04:29:39,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 04:29:39,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 04:29:39,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b33005346e6b80bc2289c235b2b7a5c7f83b2de [2021-08-27 04:29:40,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 04:29:40,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 04:29:40,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 04:29:40,317 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 04:29:40,317 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 04:29:40,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-08-27 04:29:40,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e98f5372/076c5f52d8e04ecebf5a9f110048acce/FLAG41693a880 [2021-08-27 04:29:40,921 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 04:29:40,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-08-27 04:29:40,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e98f5372/076c5f52d8e04ecebf5a9f110048acce/FLAG41693a880 [2021-08-27 04:29:41,243 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e98f5372/076c5f52d8e04ecebf5a9f110048acce [2021-08-27 04:29:41,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 04:29:41,247 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 04:29:41,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 04:29:41,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 04:29:41,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 04:29:41,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:29:41" (1/1) ... [2021-08-27 04:29:41,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a4bd42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:41, skipping insertion in model container [2021-08-27 04:29:41,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:29:41" (1/1) ... [2021-08-27 04:29:41,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 04:29:41,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 04:29:41,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:29:41,570 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 04:29:41,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:29:41,636 INFO L208 MainTranslator]: Completed translation [2021-08-27 04:29:41,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:41 WrapperNode [2021-08-27 04:29:41,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 04:29:41,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 04:29:41,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 04:29:41,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 04:29:41,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:41" (1/1) ... [2021-08-27 04:29:41,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:41" (1/1) ... [2021-08-27 04:29:41,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:41" (1/1) ... [2021-08-27 04:29:41,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:41" (1/1) ... [2021-08-27 04:29:41,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:41" (1/1) ... [2021-08-27 04:29:41,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:41" (1/1) ... [2021-08-27 04:29:41,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:41" (1/1) ... [2021-08-27 04:29:41,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 04:29:41,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 04:29:41,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 04:29:41,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 04:29:41,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:41" (1/1) ... [2021-08-27 04:29:41,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:29:41,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:29:41,732 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 04:29:41,736 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 04:29:41,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 04:29:41,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 04:29:41,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-08-27 04:29:41,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 04:29:41,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 04:29:41,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 04:29:41,771 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-08-27 04:29:41,771 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-08-27 04:29:41,771 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-08-27 04:29:41,771 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 04:29:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 04:29:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 04:29:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 04:29:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 04:29:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 04:29:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 04:29:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 04:29:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 04:29:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 04:29:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 04:29:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 04:29:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 04:29:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 04:29:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 04:29:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 04:29:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 04:29:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 04:29:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 04:29:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 04:29:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 04:29:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 04:29:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 04:29:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 04:29:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 04:29:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 04:29:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 04:29:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 04:29:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 04:29:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 04:29:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 04:29:41,776 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 04:29:41,776 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 04:29:41,776 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 04:29:41,776 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 04:29:41,776 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 04:29:41,776 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 04:29:41,777 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 04:29:41,777 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 04:29:41,777 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 04:29:41,777 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 04:29:41,777 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 04:29:41,777 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 04:29:41,777 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 04:29:41,778 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 04:29:41,778 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 04:29:41,778 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 04:29:41,778 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 04:29:41,778 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 04:29:41,778 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 04:29:41,785 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 04:29:41,785 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 04:29:41,785 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 04:29:41,785 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 04:29:41,785 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 04:29:41,786 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 04:29:41,786 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 04:29:41,787 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-27 04:29:41,787 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 04:29:41,788 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 04:29:41,788 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 04:29:41,788 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 04:29:41,788 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 04:29:41,789 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 04:29:41,789 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 04:29:41,789 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 04:29:41,789 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 04:29:41,789 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 04:29:41,789 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 04:29:41,790 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 04:29:41,790 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 04:29:41,790 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 04:29:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 04:29:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 04:29:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 04:29:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 04:29:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 04:29:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 04:29:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 04:29:41,792 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 04:29:41,792 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 04:29:41,792 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 04:29:41,792 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 04:29:41,792 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 04:29:41,792 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 04:29:41,792 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 04:29:41,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 04:29:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 04:29:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 04:29:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 04:29:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 04:29:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 04:29:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 04:29:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 04:29:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 04:29:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 04:29:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 04:29:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 04:29:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 04:29:41,795 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 04:29:41,795 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 04:29:41,795 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 04:29:41,795 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 04:29:41,796 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 04:29:41,796 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 04:29:41,796 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 04:29:41,796 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 04:29:41,796 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-27 04:29:41,797 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-27 04:29:41,797 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 04:29:41,797 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-27 04:29:41,797 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-27 04:29:41,797 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-27 04:29:41,797 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-27 04:29:41,798 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-27 04:29:41,798 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-27 04:29:41,798 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-27 04:29:41,799 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-27 04:29:41,799 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-27 04:29:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-27 04:29:41,802 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-27 04:29:41,802 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-27 04:29:41,803 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-27 04:29:41,803 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-27 04:29:41,804 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-27 04:29:41,804 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-27 04:29:41,804 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-27 04:29:41,804 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-27 04:29:41,808 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-27 04:29:41,808 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-27 04:29:41,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-27 04:29:41,809 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-27 04:29:41,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-27 04:29:41,809 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-27 04:29:41,809 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-27 04:29:41,809 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-27 04:29:41,809 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-27 04:29:41,809 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-27 04:29:41,810 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-08-27 04:29:41,810 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-27 04:29:41,810 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-27 04:29:41,810 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-27 04:29:41,810 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-27 04:29:41,810 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-27 04:29:41,810 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-27 04:29:41,810 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-27 04:29:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-27 04:29:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-27 04:29:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-27 04:29:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-27 04:29:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-27 04:29:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-27 04:29:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-27 04:29:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-08-27 04:29:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-08-27 04:29:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 04:29:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-08-27 04:29:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-08-27 04:29:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 04:29:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-27 04:29:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 04:29:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 04:29:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 04:29:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 04:29:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-27 04:29:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 04:29:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 04:29:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 04:29:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 04:29:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-27 04:29:42,601 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 04:29:42,602 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-27 04:29:42,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:29:42 BoogieIcfgContainer [2021-08-27 04:29:42,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 04:29:42,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 04:29:42,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 04:29:42,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 04:29:42,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:29:41" (1/3) ... [2021-08-27 04:29:42,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680f0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:29:42, skipping insertion in model container [2021-08-27 04:29:42,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:41" (2/3) ... [2021-08-27 04:29:42,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680f0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:29:42, skipping insertion in model container [2021-08-27 04:29:42,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:29:42" (3/3) ... [2021-08-27 04:29:42,612 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2021-08-27 04:29:42,617 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 04:29:42,617 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-08-27 04:29:42,660 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 04:29:42,665 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 04:29:42,665 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-08-27 04:29:42,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 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 04:29:42,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 04:29:42,684 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:42,684 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:29:42,685 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 04:29:42,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:42,689 INFO L82 PathProgramCache]: Analyzing trace with hash -317410196, now seen corresponding path program 1 times [2021-08-27 04:29:42,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:29:42,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651920103] [2021-08-27 04:29:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:42,701 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:29:42,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:29:42,703 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 04:29:42,711 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 04:29:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:43,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 04:29:43,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:29:43,339 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-08-27 04:29:43,340 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 04:29:44,068 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 04:29:44,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:29:44,134 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 04:29:44,135 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:29:44,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651920103] [2021-08-27 04:29:44,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651920103] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:29:44,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:29:44,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 04:29:44,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215490207] [2021-08-27 04:29:44,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 04:29:44,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:29:44,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 04:29:44,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 04:29:44,154 INFO L87 Difference]: Start difference. First operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 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 04:29:44,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:44,291 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2021-08-27 04:29:44,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 04:29:44,293 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 04:29:44,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:44,300 INFO L225 Difference]: With dead ends: 97 [2021-08-27 04:29:44,301 INFO L226 Difference]: Without dead ends: 91 [2021-08-27 04:29:44,302 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 04:29:44,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-08-27 04:29:44,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2021-08-27 04:29:44,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 69 states have internal predecessors, (77), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) [2021-08-27 04:29:44,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2021-08-27 04:29:44,337 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 9 [2021-08-27 04:29:44,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:44,337 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2021-08-27 04:29:44,338 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 04:29:44,338 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2021-08-27 04:29:44,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 04:29:44,339 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:44,339 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:29:44,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-27 04:29:44,549 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 04:29:44,549 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 04:29:44,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:44,550 INFO L82 PathProgramCache]: Analyzing trace with hash -317410195, now seen corresponding path program 1 times [2021-08-27 04:29:44,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:29:44,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906285523] [2021-08-27 04:29:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:44,551 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:29:44,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:29:44,553 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 04:29:44,555 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 04:29:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:44,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 04:29:44,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:29:44,952 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-08-27 04:29:44,953 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 04:29:45,080 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 04:29:45,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:29:45,368 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 04:29:45,368 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:29:45,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906285523] [2021-08-27 04:29:45,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906285523] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:29:45,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:29:45,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-27 04:29:45,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223785485] [2021-08-27 04:29:45,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 04:29:45,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:29:45,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 04:29:45,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:29:45,371 INFO L87 Difference]: Start difference. First operand 87 states and 103 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 04:29:45,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:45,792 INFO L93 Difference]: Finished difference Result 174 states and 228 transitions. [2021-08-27 04:29:45,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 04:29:45,793 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 04:29:45,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:45,795 INFO L225 Difference]: With dead ends: 174 [2021-08-27 04:29:45,795 INFO L226 Difference]: Without dead ends: 174 [2021-08-27 04:29:45,796 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 124.8ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:29:45,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-08-27 04:29:45,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2021-08-27 04:29:45,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 93 states have (on average 1.6236559139784945) internal successors, (151), 114 states have internal predecessors, (151), 16 states have call successors, (16), 11 states have call predecessors, (16), 12 states have return successors, (38), 16 states have call predecessors, (38), 15 states have call successors, (38) [2021-08-27 04:29:45,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 205 transitions. [2021-08-27 04:29:45,814 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 205 transitions. Word has length 9 [2021-08-27 04:29:45,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:45,815 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 205 transitions. [2021-08-27 04:29:45,815 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 04:29:45,815 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 205 transitions. [2021-08-27 04:29:45,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 04:29:45,816 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:45,816 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:29:45,827 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 04:29:46,027 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 04:29:46,028 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 04:29:46,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:46,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1249781436, now seen corresponding path program 1 times [2021-08-27 04:29:46,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:29:46,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750393870] [2021-08-27 04:29:46,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:46,029 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:29:46,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:29:46,031 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 04:29:46,033 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 04:29:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:46,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-27 04:29:46,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:29:46,527 INFO L354 Elim1Store]: treesize reduction 463, result has 13.5 percent of original size [2021-08-27 04:29:46,527 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 234 treesize of output 278 [2021-08-27 04:29:51,413 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-08-27 04:29:51,414 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 118 treesize of output 118 [2021-08-27 04:29:57,998 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 133 treesize of output 105 [2021-08-27 04:29:59,186 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 04:29:59,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:29:59,463 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 04:29:59,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:29:59,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750393870] [2021-08-27 04:29:59,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750393870] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:29:59,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:29:59,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-08-27 04:29:59,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400022416] [2021-08-27 04:29:59,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 04:29:59,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:29:59,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 04:29:59,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-27 04:29:59,467 INFO L87 Difference]: Start difference. First operand 142 states and 205 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 04:30:01,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:30:01,288 INFO L93 Difference]: Finished difference Result 261 states and 376 transitions. [2021-08-27 04:30:01,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 04:30:01,290 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 04:30:01,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:30:01,292 INFO L225 Difference]: With dead ends: 261 [2021-08-27 04:30:01,292 INFO L226 Difference]: Without dead ends: 261 [2021-08-27 04:30:01,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1097.3ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-08-27 04:30:01,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-08-27 04:30:01,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 202. [2021-08-27 04:30:01,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 144 states have (on average 1.6180555555555556) internal successors, (233), 165 states have internal predecessors, (233), 21 states have call successors, (21), 16 states have call predecessors, (21), 16 states have return successors, (51), 20 states have call predecessors, (51), 20 states have call successors, (51) [2021-08-27 04:30:01,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 305 transitions. [2021-08-27 04:30:01,311 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 305 transitions. Word has length 10 [2021-08-27 04:30:01,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:30:01,311 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 305 transitions. [2021-08-27 04:30:01,312 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 04:30:01,312 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 305 transitions. [2021-08-27 04:30:01,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 04:30:01,312 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:30:01,312 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:30:01,331 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 04:30:01,531 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 04:30:01,532 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 04:30:01,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:30:01,532 INFO L82 PathProgramCache]: Analyzing trace with hash -88518740, now seen corresponding path program 1 times [2021-08-27 04:30:01,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:30:01,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828595940] [2021-08-27 04:30:01,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:30:01,533 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:30:01,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:30:01,534 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 04:30:01,537 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 04:30:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:30:01,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-27 04:30:01,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:30:02,037 INFO L354 Elim1Store]: treesize reduction 336, result has 13.8 percent of original size [2021-08-27 04:30:02,038 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 84 treesize of output 117 [2021-08-27 04:30:02,050 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-27 04:30:02,050 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 451 treesize of output 433 [2021-08-27 04:30:05,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-27 04:30:05,011 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-08-27 04:30:05,012 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 82 treesize of output 72 [2021-08-27 04:30:09,317 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 04:30:09,321 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 04:30:11,762 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 04:30:11,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:30:12,294 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 04:30:12,294 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:30:12,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828595940] [2021-08-27 04:30:12,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828595940] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:30:12,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:30:12,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-08-27 04:30:12,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113074027] [2021-08-27 04:30:12,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 04:30:12,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:30:12,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 04:30:12,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-27 04:30:12,297 INFO L87 Difference]: Start difference. First operand 202 states and 305 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 04:30:13,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:30:13,828 INFO L93 Difference]: Finished difference Result 379 states and 540 transitions. [2021-08-27 04:30:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 04:30:13,830 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 04:30:13,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:30:13,832 INFO L225 Difference]: With dead ends: 379 [2021-08-27 04:30:13,832 INFO L226 Difference]: Without dead ends: 379 [2021-08-27 04:30:13,833 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 585.4ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-08-27 04:30:13,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-08-27 04:30:13,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 304. [2021-08-27 04:30:13,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 223 states have (on average 1.5964125560538116) internal successors, (356), 247 states have internal predecessors, (356), 31 states have call successors, (31), 24 states have call predecessors, (31), 29 states have return successors, (99), 32 states have call predecessors, (99), 30 states have call successors, (99) [2021-08-27 04:30:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 486 transitions. [2021-08-27 04:30:13,856 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 486 transitions. Word has length 11 [2021-08-27 04:30:13,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:30:13,857 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 486 transitions. [2021-08-27 04:30:13,857 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 04:30:13,857 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 486 transitions. [2021-08-27 04:30:13,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 04:30:13,858 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:30:13,858 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:30:13,875 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 04:30:14,068 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 04:30:14,068 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-08-27 04:30:14,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:30:14,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1550886470, now seen corresponding path program 1 times [2021-08-27 04:30:14,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:30:14,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869416835] [2021-08-27 04:30:14,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:30:14,070 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:30:14,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:30:14,071 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 04:30:14,073 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 04:30:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:30:14,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 04:30:14,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:30:14,584 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-08-27 04:30:14,584 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 150 treesize of output 190 [2021-08-27 04:30:17,038 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 04:30:17,039 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 04:30:24,100 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 04:30:24,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:30:24,275 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 04:30:24,276 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:30:24,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869416835] [2021-08-27 04:30:24,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869416835] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:30:24,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:30:24,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-08-27 04:30:24,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528538262] [2021-08-27 04:30:24,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 04:30:24,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:30:24,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 04:30:24,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-27 04:30:24,277 INFO L87 Difference]: Start difference. First operand 304 states and 486 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 04:30:33,115 WARN L207 SmtUtils]: Spent 8.60 s on a formula simplification that was a NOOP. DAG size: 102 [2021-08-27 04:30:58,850 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 04:30:58,851 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 04:30:58,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-08-27 04:30:59,052 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 04:30:59,053 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: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:152) ... 35 more [2021-08-27 04:30:59,059 INFO L168 Benchmark]: Toolchain (without parser) took 77810.36 ms. Allocated memory was 56.6 MB in the beginning and 195.0 MB in the end (delta: 138.4 MB). Free memory was 32.8 MB in the beginning and 57.4 MB in the end (delta: -24.6 MB). Peak memory consumption was 115.2 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:59,060 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 38.5 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:30:59,061 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.71 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 32.6 MB in the beginning and 47.6 MB in the end (delta: -15.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:59,062 INFO L168 Benchmark]: Boogie Preprocessor took 60.71 ms. Allocated memory is still 73.4 MB. Free memory was 47.6 MB in the beginning and 43.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:59,062 INFO L168 Benchmark]: RCFGBuilder took 905.31 ms. Allocated memory is still 73.4 MB. Free memory was 43.8 MB in the beginning and 34.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:59,063 INFO L168 Benchmark]: TraceAbstraction took 76449.37 ms. Allocated memory was 73.4 MB in the beginning and 195.0 MB in the end (delta: 121.6 MB). Free memory was 33.8 MB in the beginning and 57.4 MB in the end (delta: -23.6 MB). Peak memory consumption was 98.2 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:59,064 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 38.5 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 376.71 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 32.6 MB in the beginning and 47.6 MB in the end (delta: -15.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.71 ms. Allocated memory is still 73.4 MB. Free memory was 47.6 MB in the beginning and 43.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 905.31 ms. Allocated memory is still 73.4 MB. Free memory was 43.8 MB in the beginning and 34.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 76449.37 ms. Allocated memory was 73.4 MB in the beginning and 195.0 MB in the end (delta: 121.6 MB). Free memory was 33.8 MB in the beginning and 57.4 MB in the end (delta: -23.6 MB). Peak memory consumption was 98.2 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...