./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-properties/list_flag-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-properties/list_flag-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e2748dac41bc6cdd06fa5d8793326edbc7d40c79 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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/list-properties/list_flag-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e2748dac41bc6cdd06fa5d8793326edbc7d40c79 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 06:50:32,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:50:32,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:50:32,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:50:32,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:50:32,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:50:32,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:50:32,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:50:32,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:50:32,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:50:32,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:50:32,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:50:32,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:50:32,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:50:32,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:50:32,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:50:32,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:50:32,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:50:32,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:50:32,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:50:32,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:50:32,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:50:32,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:50:32,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:50:32,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:50:32,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:50:32,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:50:32,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:50:32,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:50:32,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:50:32,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:50:32,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:50:32,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:50:32,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:50:32,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:50:32,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:50:32,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:50:32,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:50:32,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:50:32,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:50:32,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:50:32,897 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 06:50:32,925 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:50:32,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:50:32,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:50:32,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:50:32,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:50:32,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:50:32,928 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:50:32,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:50:32,928 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:50:32,928 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:50:32,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:50:32,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:50:32,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:50:32,929 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:50:32,929 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:50:32,929 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:50:32,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:50:32,933 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:50:32,933 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:50:32,934 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:50:32,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:50:32,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:50:32,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:50:32,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:50:32,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:50:32,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:50:32,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 06:50:32,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 06:50:32,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:50:32,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2748dac41bc6cdd06fa5d8793326edbc7d40c79 [2021-08-27 06:50:33,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:50:33,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:50:33,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:50:33,190 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:50:33,190 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:50:33,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_flag-2.i [2021-08-27 06:50:33,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e13242254/d62b67b467e047a9bae16d30987f9d44/FLAG238dd6741 [2021-08-27 06:50:33,645 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:50:33,645 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_flag-2.i [2021-08-27 06:50:33,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e13242254/d62b67b467e047a9bae16d30987f9d44/FLAG238dd6741 [2021-08-27 06:50:33,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e13242254/d62b67b467e047a9bae16d30987f9d44 [2021-08-27 06:50:33,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:50:33,679 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:50:33,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:50:33,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:50:33,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:50:33,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:50:33" (1/1) ... [2021-08-27 06:50:33,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b9dc8f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:33, skipping insertion in model container [2021-08-27 06:50:33,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:50:33" (1/1) ... [2021-08-27 06:50:33,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:50:33,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:50:33,909 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-08-27 06:50:33,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:50:33,916 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 06:50:33,936 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-08-27 06:50:33,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:50:33,965 INFO L208 MainTranslator]: Completed translation [2021-08-27 06:50:33,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:33 WrapperNode [2021-08-27 06:50:33,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:50:33,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 06:50:33,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 06:50:33,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 06:50:33,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:33" (1/1) ... [2021-08-27 06:50:33,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:33" (1/1) ... [2021-08-27 06:50:33,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:33" (1/1) ... [2021-08-27 06:50:33,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:33" (1/1) ... [2021-08-27 06:50:34,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:33" (1/1) ... [2021-08-27 06:50:34,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:33" (1/1) ... [2021-08-27 06:50:34,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:33" (1/1) ... [2021-08-27 06:50:34,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 06:50:34,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 06:50:34,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 06:50:34,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 06:50:34,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:33" (1/1) ... [2021-08-27 06:50:34,021 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:50:34,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:50:34,033 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 06:50:34,058 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 06:50:34,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 06:50:34,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 06:50:34,070 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 06:50:34,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 06:50:34,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 06:50:34,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 06:50:34,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 06:50:34,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 06:50:34,072 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-08-27 06:50:34,073 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 06:50:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 06:50:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 06:50:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 06:50:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 06:50:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 06:50:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 06:50:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 06:50:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 06:50:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 06:50:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 06:50:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 06:50:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 06:50:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 06:50:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 06:50:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 06:50:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 06:50:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 06:50:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 06:50:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 06:50:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 06:50:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 06:50:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 06:50:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 06:50:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 06:50:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 06:50:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 06:50:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 06:50:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 06:50:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 06:50:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 06:50:34,077 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 06:50:34,077 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 06:50:34,077 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 06:50:34,077 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 06:50:34,077 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 06:50:34,077 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 06:50:34,077 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 06:50:34,078 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 06:50:34,078 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 06:50:34,079 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 06:50:34,079 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 06:50:34,079 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 06:50:34,079 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 06:50:34,079 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 06:50:34,079 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 06:50:34,080 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 06:50:34,080 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 06:50:34,080 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 06:50:34,080 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 06:50:34,080 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 06:50:34,080 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 06:50:34,080 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 06:50:34,080 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 06:50:34,081 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 06:50:34,081 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 06:50:34,081 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 06:50:34,082 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 06:50:34,082 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 06:50:34,082 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 06:50:34,082 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 06:50:34,082 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 06:50:34,082 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 06:50:34,082 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 06:50:34,082 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 06:50:34,083 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 06:50:34,083 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 06:50:34,083 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 06:50:34,083 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 06:50:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 06:50:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 06:50:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 06:50:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 06:50:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 06:50:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 06:50:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 06:50:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 06:50:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 06:50:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 06:50:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 06:50:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 06:50:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 06:50:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 06:50:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 06:50:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 06:50:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 06:50:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 06:50:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 06:50:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 06:50:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 06:50:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 06:50:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 06:50:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 06:50:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 06:50:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 06:50:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 06:50:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 06:50:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 06:50:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 06:50:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 06:50:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 06:50:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 06:50:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 06:50:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 06:50:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 06:50:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 06:50:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 06:50:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 06:50:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 06:50:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 06:50:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 06:50:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 06:50:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 06:50:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 06:50:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-08-27 06:50:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 06:50:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 06:50:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 06:50:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 06:50:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 06:50:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 06:50:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 06:50:34,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 06:50:34,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 06:50:34,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 06:50:34,401 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-08-27 06:50:34,555 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 06:50:34,555 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-08-27 06:50:34,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:50:34 BoogieIcfgContainer [2021-08-27 06:50:34,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 06:50:34,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 06:50:34,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 06:50:34,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 06:50:34,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:50:33" (1/3) ... [2021-08-27 06:50:34,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71134840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:50:34, skipping insertion in model container [2021-08-27 06:50:34,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:33" (2/3) ... [2021-08-27 06:50:34,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71134840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:50:34, skipping insertion in model container [2021-08-27 06:50:34,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:50:34" (3/3) ... [2021-08-27 06:50:34,570 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2021-08-27 06:50:34,574 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 06:50:34,574 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-08-27 06:50:34,608 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 06:50:34,614 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 06:50:34,614 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-08-27 06:50:34,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 33 states have (on average 2.0) internal successors, (66), 56 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 06:50:34,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 06:50:34,631 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:50:34,631 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:50:34,632 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-08-27 06:50:34,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:50:34,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1866589301, now seen corresponding path program 1 times [2021-08-27 06:50:34,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:50:34,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502829337] [2021-08-27 06:50:34,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:50:34,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:50:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:50:34,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:50:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:50:34,823 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 06:50:34,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:50:34,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502829337] [2021-08-27 06:50:34,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502829337] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:50:34,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:50:34,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 06:50:34,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581549501] [2021-08-27 06:50:34,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 06:50:34,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:50:34,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 06:50:34,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:50:34,848 INFO L87 Difference]: Start difference. First operand has 62 states, 33 states have (on average 2.0) internal successors, (66), 56 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:34,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:50:34,944 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2021-08-27 06:50:34,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 06:50:34,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-27 06:50:34,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:50:34,949 INFO L225 Difference]: With dead ends: 62 [2021-08-27 06:50:34,949 INFO L226 Difference]: Without dead ends: 55 [2021-08-27 06:50:34,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:50:34,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-08-27 06:50:34,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-08-27 06:50:34,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 51 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:34,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-08-27 06:50:34,985 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 10 [2021-08-27 06:50:34,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:50:34,986 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-08-27 06:50:34,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:34,986 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-08-27 06:50:34,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 06:50:34,987 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:50:34,987 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:50:34,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 06:50:34,988 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-08-27 06:50:34,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:50:34,988 INFO L82 PathProgramCache]: Analyzing trace with hash -2029727141, now seen corresponding path program 1 times [2021-08-27 06:50:34,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:50:34,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094513915] [2021-08-27 06:50:34,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:50:34,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:50:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:50:35,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:50:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:50:35,074 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 06:50:35,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:50:35,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094513915] [2021-08-27 06:50:35,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094513915] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:50:35,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:50:35,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 06:50:35,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446360341] [2021-08-27 06:50:35,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:50:35,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:50:35,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:50:35,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:50:35,078 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:35,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:50:35,218 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-08-27 06:50:35,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:50:35,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-27 06:50:35,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:50:35,221 INFO L225 Difference]: With dead ends: 63 [2021-08-27 06:50:35,221 INFO L226 Difference]: Without dead ends: 63 [2021-08-27 06:50:35,222 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:50:35,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-08-27 06:50:35,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2021-08-27 06:50:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.736842105263158) internal successors, (66), 54 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:35,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-08-27 06:50:35,232 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2021-08-27 06:50:35,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:50:35,232 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-08-27 06:50:35,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:35,232 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-08-27 06:50:35,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 06:50:35,233 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:50:35,233 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:50:35,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 06:50:35,233 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-08-27 06:50:35,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:50:35,234 INFO L82 PathProgramCache]: Analyzing trace with hash -2029727140, now seen corresponding path program 1 times [2021-08-27 06:50:35,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:50:35,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122734669] [2021-08-27 06:50:35,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:50:35,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:50:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:50:35,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:50:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:50:35,363 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 06:50:35,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:50:35,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122734669] [2021-08-27 06:50:35,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122734669] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:50:35,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:50:35,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 06:50:35,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539559402] [2021-08-27 06:50:35,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:50:35,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:50:35,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:50:35,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:50:35,370 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:35,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:50:35,489 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2021-08-27 06:50:35,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:50:35,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-27 06:50:35,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:50:35,491 INFO L225 Difference]: With dead ends: 76 [2021-08-27 06:50:35,491 INFO L226 Difference]: Without dead ends: 76 [2021-08-27 06:50:35,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:50:35,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-08-27 06:50:35,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2021-08-27 06:50:35,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 63 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:35,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2021-08-27 06:50:35,499 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 11 [2021-08-27 06:50:35,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:50:35,499 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2021-08-27 06:50:35,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:35,499 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2021-08-27 06:50:35,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-27 06:50:35,499 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:50:35,500 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:50:35,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 06:50:35,500 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr20ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-08-27 06:50:35,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:50:35,500 INFO L82 PathProgramCache]: Analyzing trace with hash 315085343, now seen corresponding path program 1 times [2021-08-27 06:50:35,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:50:35,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074449279] [2021-08-27 06:50:35,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:50:35,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:50:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:50:35,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:50:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:50:35,594 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 06:50:35,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:50:35,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074449279] [2021-08-27 06:50:35,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074449279] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:50:35,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:50:35,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 06:50:35,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332015476] [2021-08-27 06:50:35,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 06:50:35,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:50:35,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 06:50:35,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 06:50:35,595 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:35,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:50:35,742 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2021-08-27 06:50:35,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 06:50:35,742 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-08-27 06:50:35,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:50:35,743 INFO L225 Difference]: With dead ends: 110 [2021-08-27 06:50:35,743 INFO L226 Difference]: Without dead ends: 110 [2021-08-27 06:50:35,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.4ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-27 06:50:35,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-08-27 06:50:35,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 75. [2021-08-27 06:50:35,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.509090909090909) internal successors, (83), 71 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:35,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2021-08-27 06:50:35,747 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 18 [2021-08-27 06:50:35,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:50:35,747 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2021-08-27 06:50:35,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:35,748 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2021-08-27 06:50:35,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-27 06:50:35,748 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:50:35,748 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:50:35,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 06:50:35,748 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr21ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-08-27 06:50:35,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:50:35,749 INFO L82 PathProgramCache]: Analyzing trace with hash 315085504, now seen corresponding path program 1 times [2021-08-27 06:50:35,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:50:35,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998315935] [2021-08-27 06:50:35,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:50:35,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:50:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:50:35,759 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 06:50:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:50:35,780 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 06:50:35,780 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 06:50:35,781 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr21ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 06:50:35,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 06:50:35,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 06:50:35,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 06:50:35,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 06:50:35,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 06:50:35,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 06:50:35,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 06:50:35,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 06:50:35,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 06:50:35,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 06:50:35,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-08-27 06:50:35,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-08-27 06:50:35,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-08-27 06:50:35,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-08-27 06:50:35,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-08-27 06:50:35,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-08-27 06:50:35,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-08-27 06:50:35,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-08-27 06:50:35,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-08-27 06:50:35,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-08-27 06:50:35,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 06:50:35,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 06:50:35,787 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 06:50:35,791 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-27 06:50:35,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:50:35 BoogieIcfgContainer [2021-08-27 06:50:35,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 06:50:35,805 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 06:50:35,805 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 06:50:35,805 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 06:50:35,806 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:50:34" (3/4) ... [2021-08-27 06:50:35,808 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 06:50:35,808 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 06:50:35,809 INFO L168 Benchmark]: Toolchain (without parser) took 2129.12 ms. Allocated memory was 60.8 MB in the beginning and 96.5 MB in the end (delta: 35.7 MB). Free memory was 38.3 MB in the beginning and 35.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. [2021-08-27 06:50:35,809 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 60.8 MB. Free memory was 42.7 MB in the beginning and 42.7 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:50:35,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.32 ms. Allocated memory is still 60.8 MB. Free memory was 38.2 MB in the beginning and 37.6 MB in the end (delta: 596.2 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 06:50:35,810 INFO L168 Benchmark]: Boogie Preprocessor took 41.91 ms. Allocated memory is still 60.8 MB. Free memory was 37.6 MB in the beginning and 35.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 06:50:35,810 INFO L168 Benchmark]: RCFGBuilder took 554.36 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 35.0 MB in the beginning and 54.1 MB in the end (delta: -19.1 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2021-08-27 06:50:35,810 INFO L168 Benchmark]: TraceAbstraction took 1239.59 ms. Allocated memory was 73.4 MB in the beginning and 96.5 MB in the end (delta: 23.1 MB). Free memory was 53.7 MB in the beginning and 36.3 MB in the end (delta: 17.4 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. [2021-08-27 06:50:35,811 INFO L168 Benchmark]: Witness Printer took 2.56 ms. Allocated memory is still 96.5 MB. Free memory was 36.3 MB in the beginning and 35.4 MB in the end (delta: 889.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 06:50:35,812 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 60.8 MB. Free memory was 42.7 MB in the beginning and 42.7 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.32 ms. Allocated memory is still 60.8 MB. Free memory was 38.2 MB in the beginning and 37.6 MB in the end (delta: 596.2 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.91 ms. Allocated memory is still 60.8 MB. Free memory was 37.6 MB in the beginning and 35.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 554.36 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 35.0 MB in the beginning and 54.1 MB in the end (delta: -19.1 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1239.59 ms. Allocated memory was 73.4 MB in the beginning and 96.5 MB in the end (delta: 23.1 MB). Free memory was 53.7 MB in the beginning and 36.3 MB in the end (delta: 17.4 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. * Witness Printer took 2.56 ms. Allocated memory is still 96.5 MB. Free memory was 36.3 MB in the beginning and 35.4 MB in the end (delta: 889.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) VAL [a={-1:0}, flag=0] [L536] p = a VAL [a={-1:0}, flag=0, p={-1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={-1:0}, flag=0, p={-1:0}] [L549] p = a VAL [a={-1:0}, flag=0, p={-1:0}] [L550] COND FALSE !(\read(flag)) VAL [a={-1:0}, flag=0, p={-1:0}] [L554] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 81 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 1179.5ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 10.9ms, AutomataDifference: 529.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 158 SDtfs, 275 SDslu, 173 SDs, 0 SdLazy, 433 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 306.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 164.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 48.0ms AutomataMinimizationTime, 4 MinimizatonAttempts, 49 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.2ms SsaConstructionTime, 75.1ms SatisfiabilityAnalysisTime, 342.5ms InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-27 06:50:35,837 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 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 06:50:37,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:50:37,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:50:37,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:50:37,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:50:37,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:50:37,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:50:37,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:50:37,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:50:37,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:50:37,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:50:37,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:50:37,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:50:37,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:50:37,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:50:37,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:50:37,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:50:37,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:50:37,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:50:37,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:50:37,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:50:37,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:50:37,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:50:37,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:50:37,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:50:37,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:50:37,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:50:37,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:50:37,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:50:37,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:50:37,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:50:37,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:50:37,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:50:37,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:50:37,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:50:37,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:50:37,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:50:37,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:50:37,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:50:37,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:50:37,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:50:37,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 06:50:37,638 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:50:37,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:50:37,639 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:50:37,639 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:50:37,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:50:37,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:50:37,641 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:50:37,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:50:37,642 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:50:37,642 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:50:37,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:50:37,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:50:37,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:50:37,644 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:50:37,644 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:50:37,644 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:50:37,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:50:37,644 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:50:37,644 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 06:50:37,645 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 06:50:37,645 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:50:37,645 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:50:37,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:50:37,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:50:37,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:50:37,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:50:37,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:50:37,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:50:37,646 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 06:50:37,646 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 06:50:37,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:50:37,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 06:50:37,647 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2748dac41bc6cdd06fa5d8793326edbc7d40c79 [2021-08-27 06:50:37,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:50:37,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:50:37,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:50:37,969 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:50:37,969 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:50:37,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_flag-2.i [2021-08-27 06:50:38,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7d2b22d7/2de38dbdc1554665b08db8bda0ad689c/FLAG0af2459df [2021-08-27 06:50:38,404 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:50:38,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_flag-2.i [2021-08-27 06:50:38,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7d2b22d7/2de38dbdc1554665b08db8bda0ad689c/FLAG0af2459df [2021-08-27 06:50:38,799 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7d2b22d7/2de38dbdc1554665b08db8bda0ad689c [2021-08-27 06:50:38,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:50:38,803 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:50:38,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:50:38,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:50:38,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:50:38,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:50:38" (1/1) ... [2021-08-27 06:50:38,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e85cf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:38, skipping insertion in model container [2021-08-27 06:50:38,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:50:38" (1/1) ... [2021-08-27 06:50:38,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:50:38,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:50:39,068 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-08-27 06:50:39,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:50:39,083 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 06:50:39,119 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-08-27 06:50:39,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:50:39,138 INFO L208 MainTranslator]: Completed translation [2021-08-27 06:50:39,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:39 WrapperNode [2021-08-27 06:50:39,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:50:39,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 06:50:39,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 06:50:39,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 06:50:39,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:39" (1/1) ... [2021-08-27 06:50:39,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:39" (1/1) ... [2021-08-27 06:50:39,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:39" (1/1) ... [2021-08-27 06:50:39,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:39" (1/1) ... [2021-08-27 06:50:39,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:39" (1/1) ... [2021-08-27 06:50:39,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:39" (1/1) ... [2021-08-27 06:50:39,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:39" (1/1) ... [2021-08-27 06:50:39,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 06:50:39,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 06:50:39,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 06:50:39,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 06:50:39,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:39" (1/1) ... [2021-08-27 06:50:39,204 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:50:39,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:50:39,250 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 06:50:39,271 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 06:50:39,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 06:50:39,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 06:50:39,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:50:39,290 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 06:50:39,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 06:50:39,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 06:50:39,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 06:50:39,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 06:50:39,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 06:50:39,291 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-08-27 06:50:39,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 06:50:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 06:50:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 06:50:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 06:50:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 06:50:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 06:50:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 06:50:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 06:50:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 06:50:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 06:50:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 06:50:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 06:50:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 06:50:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 06:50:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 06:50:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 06:50:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 06:50:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 06:50:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 06:50:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 06:50:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 06:50:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 06:50:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 06:50:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 06:50:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 06:50:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 06:50:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 06:50:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 06:50:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 06:50:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 06:50:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 06:50:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 06:50:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 06:50:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 06:50:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 06:50:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 06:50:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 06:50:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 06:50:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 06:50:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 06:50:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 06:50:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 06:50:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 06:50:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 06:50:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 06:50:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 06:50:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 06:50:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 06:50:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 06:50:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 06:50:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 06:50:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 06:50:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 06:50:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 06:50:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 06:50:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 06:50:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 06:50:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 06:50:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 06:50:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 06:50:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 06:50:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 06:50:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 06:50:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 06:50:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 06:50:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 06:50:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 06:50:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 06:50:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 06:50:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 06:50:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 06:50:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 06:50:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 06:50:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 06:50:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 06:50:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 06:50:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 06:50:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 06:50:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 06:50:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 06:50:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 06:50:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 06:50:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 06:50:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 06:50:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 06:50:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 06:50:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 06:50:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 06:50:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 06:50:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 06:50:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 06:50:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 06:50:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 06:50:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 06:50:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 06:50:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 06:50:39,306 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 06:50:39,306 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 06:50:39,306 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 06:50:39,306 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 06:50:39,306 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 06:50:39,306 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 06:50:39,307 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 06:50:39,307 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 06:50:39,307 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 06:50:39,307 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 06:50:39,307 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 06:50:39,307 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 06:50:39,307 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 06:50:39,307 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 06:50:39,307 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 06:50:39,307 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 06:50:39,307 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 06:50:39,308 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 06:50:39,308 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-08-27 06:50:39,310 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 06:50:39,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 06:50:39,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-27 06:50:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 06:50:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 06:50:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-27 06:50:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 06:50:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-27 06:50:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 06:50:39,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:50:39,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-27 06:50:39,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-27 06:50:39,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 06:50:39,726 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-08-27 06:50:39,984 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 06:50:39,984 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-08-27 06:50:39,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:50:39 BoogieIcfgContainer [2021-08-27 06:50:39,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 06:50:39,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 06:50:39,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 06:50:39,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 06:50:39,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:50:38" (1/3) ... [2021-08-27 06:50:39,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ffc9538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:50:39, skipping insertion in model container [2021-08-27 06:50:39,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:39" (2/3) ... [2021-08-27 06:50:39,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ffc9538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:50:39, skipping insertion in model container [2021-08-27 06:50:39,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:50:39" (3/3) ... [2021-08-27 06:50:39,990 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2021-08-27 06:50:39,996 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 06:50:39,996 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-08-27 06:50:40,025 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 06:50:40,033 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 06:50:40,033 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-08-27 06:50:40,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 32 states have (on average 2.03125) internal successors, (65), 55 states have internal predecessors, (65), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 06:50:40,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 06:50:40,046 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:50:40,047 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:50:40,047 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-08-27 06:50:40,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:50:40,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1040661460, now seen corresponding path program 1 times [2021-08-27 06:50:40,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:50:40,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183800280] [2021-08-27 06:50:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:50:40,061 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:50:40,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:50:40,063 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 06:50:40,064 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 06:50:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:50:40,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-27 06:50:40,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:50:40,431 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 06:50:40,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:50:40,477 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 06:50:40,478 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:50:40,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183800280] [2021-08-27 06:50:40,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183800280] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:50:40,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:50:40,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 06:50:40,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902211267] [2021-08-27 06:50:40,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-27 06:50:40,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:50:40,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-27 06:50:40,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-27 06:50:40,493 INFO L87 Difference]: Start difference. First operand has 61 states, 32 states have (on average 2.03125) internal successors, (65), 55 states have internal predecessors, (65), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:40,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:50:40,514 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2021-08-27 06:50:40,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 06:50:40,515 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-27 06:50:40,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:50:40,521 INFO L225 Difference]: With dead ends: 61 [2021-08-27 06:50:40,521 INFO L226 Difference]: Without dead ends: 54 [2021-08-27 06:50:40,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-27 06:50:40,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-08-27 06:50:40,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-08-27 06:50:40,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 29 states have (on average 1.896551724137931) internal successors, (55), 50 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:40,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-08-27 06:50:40,550 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 10 [2021-08-27 06:50:40,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:50:40,551 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-08-27 06:50:40,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:40,551 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-08-27 06:50:40,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 06:50:40,552 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:50:40,553 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:50:40,560 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 06:50:40,761 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 06:50:40,761 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-08-27 06:50:40,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:50:40,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1040662421, now seen corresponding path program 1 times [2021-08-27 06:50:40,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:50:40,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674069257] [2021-08-27 06:50:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:50:40,762 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:50:40,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:50:40,763 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 06:50:40,781 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 06:50:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:50:40,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 06:50:40,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:50:40,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:50:41,003 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 06:50:41,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:50:41,048 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 06:50:41,049 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:50:41,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674069257] [2021-08-27 06:50:41,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674069257] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:50:41,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:50:41,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-27 06:50:41,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281197060] [2021-08-27 06:50:41,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:50:41,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:50:41,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:50:41,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:50:41,053 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:41,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:50:41,220 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2021-08-27 06:50:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 06:50:41,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-27 06:50:41,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:50:41,222 INFO L225 Difference]: With dead ends: 61 [2021-08-27 06:50:41,222 INFO L226 Difference]: Without dead ends: 61 [2021-08-27 06:50:41,222 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:50:41,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-08-27 06:50:41,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2021-08-27 06:50:41,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 52 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:41,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2021-08-27 06:50:41,227 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 10 [2021-08-27 06:50:41,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:50:41,227 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2021-08-27 06:50:41,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:41,227 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2021-08-27 06:50:41,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 06:50:41,227 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:50:41,227 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:50:41,251 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 06:50:41,453 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 06:50:41,454 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-08-27 06:50:41,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:50:41,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1040662420, now seen corresponding path program 1 times [2021-08-27 06:50:41,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:50:41,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357291322] [2021-08-27 06:50:41,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:50:41,455 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:50:41,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:50:41,463 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 06:50:41,464 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 06:50:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:50:41,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 06:50:41,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:50:41,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:50:41,679 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 06:50:41,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:50:41,803 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 06:50:41,804 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:50:41,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357291322] [2021-08-27 06:50:41,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357291322] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:50:41,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:50:41,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-27 06:50:41,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012971564] [2021-08-27 06:50:41,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 06:50:41,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:50:41,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 06:50:41,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:50:41,805 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:42,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:50:42,043 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2021-08-27 06:50:42,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:50:42,044 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-27 06:50:42,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:50:42,045 INFO L225 Difference]: With dead ends: 73 [2021-08-27 06:50:42,045 INFO L226 Difference]: Without dead ends: 73 [2021-08-27 06:50:42,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 85.9ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-27 06:50:42,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-27 06:50:42,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2021-08-27 06:50:42,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.5454545454545454) internal successors, (68), 59 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:42,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2021-08-27 06:50:42,049 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 10 [2021-08-27 06:50:42,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:50:42,049 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2021-08-27 06:50:42,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:50:42,050 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2021-08-27 06:50:42,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 06:50:42,050 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:50:42,050 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:50:42,064 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 06:50:42,250 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 06:50:42,251 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr21ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-08-27 06:50:42,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:50:42,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1562517626, now seen corresponding path program 1 times [2021-08-27 06:50:42,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:50:42,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642042049] [2021-08-27 06:50:42,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:50:42,252 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:50:42,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:50:42,253 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 06:50:42,254 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 06:50:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:50:42,375 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 06:50:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:50:42,441 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-27 06:50:42,442 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 06:50:42,442 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr21ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 06:50:42,444 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 06:50:42,444 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 06:50:42,444 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 06:50:42,444 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 06:50:42,444 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 06:50:42,444 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 06:50:42,444 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 06:50:42,444 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 06:50:42,444 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 06:50:42,444 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 06:50:42,445 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-08-27 06:50:42,445 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-08-27 06:50:42,445 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-08-27 06:50:42,445 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-08-27 06:50:42,445 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-08-27 06:50:42,445 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-08-27 06:50:42,445 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-08-27 06:50:42,445 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-08-27 06:50:42,445 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-08-27 06:50:42,445 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-08-27 06:50:42,445 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 06:50:42,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-27 06:50:42,646 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 06:50:42,650 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 06:50:42,655 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-27 06:50:42,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:50:42 BoogieIcfgContainer [2021-08-27 06:50:42,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 06:50:42,664 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 06:50:42,664 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 06:50:42,664 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 06:50:42,668 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:50:39" (3/4) ... [2021-08-27 06:50:42,670 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 06:50:42,670 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 06:50:42,671 INFO L168 Benchmark]: Toolchain (without parser) took 3868.12 ms. Allocated memory was 50.3 MB in the beginning and 88.1 MB in the end (delta: 37.7 MB). Free memory was 26.5 MB in the beginning and 34.0 MB in the end (delta: -7.5 MB). Peak memory consumption was 30.1 MB. Max. memory is 16.1 GB. [2021-08-27 06:50:42,672 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 50.3 MB. Free memory was 31.5 MB in the beginning and 31.4 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:50:42,672 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.61 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.2 MB in the beginning and 36.8 MB in the end (delta: -10.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2021-08-27 06:50:42,673 INFO L168 Benchmark]: Boogie Preprocessor took 51.69 ms. Allocated memory is still 60.8 MB. Free memory was 36.8 MB in the beginning and 33.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 06:50:42,673 INFO L168 Benchmark]: RCFGBuilder took 793.23 ms. Allocated memory is still 60.8 MB. Free memory was 33.8 MB in the beginning and 36.6 MB in the end (delta: -2.8 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2021-08-27 06:50:42,673 INFO L168 Benchmark]: TraceAbstraction took 2677.56 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 36.3 MB in the beginning and 34.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2021-08-27 06:50:42,674 INFO L168 Benchmark]: Witness Printer took 6.12 ms. Allocated memory is still 88.1 MB. Free memory is still 34.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:50:42,678 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 50.3 MB. Free memory was 31.5 MB in the beginning and 31.4 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 335.61 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.2 MB in the beginning and 36.8 MB in the end (delta: -10.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.69 ms. Allocated memory is still 60.8 MB. Free memory was 36.8 MB in the beginning and 33.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 793.23 ms. Allocated memory is still 60.8 MB. Free memory was 33.8 MB in the beginning and 36.6 MB in the end (delta: -2.8 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2677.56 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 36.3 MB in the beginning and 34.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. * Witness Printer took 6.12 ms. Allocated memory is still 88.1 MB. Free memory is still 34.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) VAL [a={1:0}, flag=2147483648] [L536] p = a VAL [a={1:0}, flag=2147483648, p={1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={1:0}, flag=2147483648, p={1:0}] [L549] p = a VAL [a={1:0}, flag=2147483648, p={1:0}] [L550] COND TRUE \read(flag) VAL [a={1:0}, flag=2147483648, p={1:0}] [L551] EXPR p->h VAL [a={1:0}, flag=2147483648, p={1:0}, p->h=3] [L551] COND FALSE !(p->h == 1) [L556] EXPR p->h VAL [a={1:0}, flag=2147483648, p={1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 86 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 2624.8ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 8.8ms, AutomataDifference: 450.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 119 SDtfs, 222 SDslu, 37 SDs, 0 SdLazy, 103 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 273.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 103.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=3, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 26.6ms AutomataMinimizationTime, 3 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 45.6ms SsaConstructionTime, 92.0ms SatisfiabilityAnalysisTime, 507.1ms InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 206 SizeOfPredicates, 3 NumberOfNonLiveVariables, 186 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-27 06:50:42,708 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 0 Received shutdown request...