./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0158-2.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/memsafety/test-0158-2.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 c3baf3e1382b3477cfa26255004191fb506be280 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0158-2.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 c3baf3e1382b3477cfa26255004191fb506be280 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 05:23:05,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:23:05,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:23:05,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:23:05,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:23:05,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:23:05,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:23:05,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:23:05,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:23:05,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:23:05,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:23:05,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:23:05,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:23:05,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:23:05,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:23:05,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:23:05,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:23:05,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:23:05,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:23:05,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:23:05,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:23:05,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:23:05,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:23:05,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:23:05,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:23:05,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:23:05,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:23:05,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:23:05,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:23:05,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:23:05,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:23:05,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:23:05,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:23:05,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:23:05,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:23:05,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:23:05,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:23:05,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:23:05,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:23:05,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:23:05,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:23:05,728 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 05:23:05,780 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:23:05,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:23:05,781 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:23:05,781 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:23:05,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:23:05,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:23:05,783 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:23:05,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:23:05,784 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:23:05,784 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:23:05,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:23:05,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:23:05,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:23:05,785 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:23:05,785 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:23:05,786 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:23:05,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:23:05,786 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:23:05,786 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:23:05,786 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:23:05,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:23:05,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:23:05,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:23:05,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:23:05,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:23:05,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:23:05,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 05:23:05,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 05:23:05,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:23:05,788 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3baf3e1382b3477cfa26255004191fb506be280 [2021-08-27 05:23:06,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:23:06,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:23:06,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:23:06,157 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:23:06,158 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:23:06,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0158-2.i [2021-08-27 05:23:06,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7be850db/44ec0fe7d58f4a24ac31c210bc099da6/FLAG17ca96339 [2021-08-27 05:23:06,637 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:23:06,637 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0158-2.i [2021-08-27 05:23:06,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7be850db/44ec0fe7d58f4a24ac31c210bc099da6/FLAG17ca96339 [2021-08-27 05:23:06,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7be850db/44ec0fe7d58f4a24ac31c210bc099da6 [2021-08-27 05:23:06,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:23:06,685 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:23:06,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:23:06,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:23:06,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:23:06,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:23:06" (1/1) ... [2021-08-27 05:23:06,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1701a549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:06, skipping insertion in model container [2021-08-27 05:23:06,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:23:06" (1/1) ... [2021-08-27 05:23:06,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:23:06,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:23:06,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:23:07,007 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:23:07,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:23:07,074 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:23:07,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:07 WrapperNode [2021-08-27 05:23:07,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:23:07,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:23:07,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:23:07,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:23:07,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:07" (1/1) ... [2021-08-27 05:23:07,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:07" (1/1) ... [2021-08-27 05:23:07,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:07" (1/1) ... [2021-08-27 05:23:07,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:07" (1/1) ... [2021-08-27 05:23:07,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:07" (1/1) ... [2021-08-27 05:23:07,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:07" (1/1) ... [2021-08-27 05:23:07,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:07" (1/1) ... [2021-08-27 05:23:07,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:23:07,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:23:07,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:23:07,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:23:07,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:07" (1/1) ... [2021-08-27 05:23:07,165 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:23:07,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:23:07,180 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 05:23:07,182 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 05:23:07,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:23:07,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:23:07,216 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 05:23:07,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:23:07,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:23:07,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 05:23:07,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 05:23:07,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 05:23:07,219 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:23:07,219 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:23:07,219 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 05:23:07,221 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 05:23:07,221 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 05:23:07,221 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 05:23:07,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 05:23:07,224 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:23:07,226 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:23:07,226 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:23:07,226 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:23:07,226 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:23:07,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:23:07,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:23:07,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:23:07,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:23:07,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:23:07,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:23:07,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:23:07,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:23:07,228 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:23:07,228 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:23:07,228 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:23:07,228 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:23:07,228 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:23:07,228 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 05:23:07,228 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 05:23:07,228 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 05:23:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:23:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:23:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:23:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:23:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:23:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:23:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:23:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:23:07,230 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:23:07,230 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:23:07,230 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:23:07,230 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:23:07,231 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:23:07,231 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:23:07,231 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:23:07,232 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:23:07,232 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:23:07,232 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:23:07,232 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:23:07,232 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:23:07,233 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:23:07,233 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:23:07,233 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:23:07,233 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:23:07,233 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:23:07,233 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:23:07,233 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:23:07,233 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:23:07,234 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:23:07,234 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:23:07,234 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:23:07,235 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:23:07,235 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:23:07,235 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:23:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:23:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:23:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:23:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:23:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:23:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:23:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:23:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 05:23:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:23:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 05:23:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:23:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:23:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 05:23:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:23:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:23:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:23:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:23:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:23:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:23:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:23:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:23:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:23:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:23:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:23:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:23:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:23:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:23:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:23:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:23:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:23:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:23:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:23:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:23:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:23:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:23:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:23:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:23:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:23:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:23:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:23:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:23:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:23:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:23:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:23:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:23:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:23:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:23:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:23:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:23:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:23:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:23:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:23:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:23:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 05:23:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 05:23:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:23:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:23:07,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 05:23:07,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:23:07,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 05:23:07,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 05:23:07,709 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:23:07,710 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-27 05:23:07,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:23:07 BoogieIcfgContainer [2021-08-27 05:23:07,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:23:07,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:23:07,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:23:07,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:23:07,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:23:06" (1/3) ... [2021-08-27 05:23:07,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71027cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:23:07, skipping insertion in model container [2021-08-27 05:23:07,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:07" (2/3) ... [2021-08-27 05:23:07,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71027cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:23:07, skipping insertion in model container [2021-08-27 05:23:07,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:23:07" (3/3) ... [2021-08-27 05:23:07,727 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-2.i [2021-08-27 05:23:07,732 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:23:07,732 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-27 05:23:07,783 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:23:07,792 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 05:23:07,792 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-27 05:23:07,806 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 10 states have (on average 1.7) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:23:07,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:23:07,813 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:07,813 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:07,814 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-27 05:23:07,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:07,819 INFO L82 PathProgramCache]: Analyzing trace with hash -280547993, now seen corresponding path program 1 times [2021-08-27 05:23:07,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:23:07,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042674115] [2021-08-27 05:23:07,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:07,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:23:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:08,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:23:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:08,109 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 05:23:08,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:23:08,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042674115] [2021-08-27 05:23:08,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042674115] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:08,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:08,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 05:23:08,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181016164] [2021-08-27 05:23:08,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 05:23:08,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:23:08,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 05:23:08,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:23:08,134 INFO L87 Difference]: Start difference. First operand has 22 states, 10 states have (on average 1.7) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 05:23:08,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:08,194 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-08-27 05:23:08,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 05:23:08,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 7 [2021-08-27 05:23:08,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:08,204 INFO L225 Difference]: With dead ends: 19 [2021-08-27 05:23:08,204 INFO L226 Difference]: Without dead ends: 16 [2021-08-27 05:23:08,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:23:08,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-27 05:23:08,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-27 05:23:08,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 12 states have internal predecessors, (12), 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 05:23:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2021-08-27 05:23:08,232 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 7 [2021-08-27 05:23:08,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:08,233 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2021-08-27 05:23:08,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 05:23:08,233 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2021-08-27 05:23:08,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:23:08,234 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:08,234 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:08,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 05:23:08,234 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-27 05:23:08,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:08,235 INFO L82 PathProgramCache]: Analyzing trace with hash -280547992, now seen corresponding path program 1 times [2021-08-27 05:23:08,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:23:08,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957944727] [2021-08-27 05:23:08,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:08,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:23:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:08,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:23:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:08,361 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 05:23:08,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:23:08,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957944727] [2021-08-27 05:23:08,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957944727] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:08,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:08,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 05:23:08,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373074676] [2021-08-27 05:23:08,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 05:23:08,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:23:08,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 05:23:08,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:23:08,366 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 05:23:08,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:08,397 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-08-27 05:23:08,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 05:23:08,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 7 [2021-08-27 05:23:08,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:08,398 INFO L225 Difference]: With dead ends: 13 [2021-08-27 05:23:08,398 INFO L226 Difference]: Without dead ends: 13 [2021-08-27 05:23:08,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:23:08,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-08-27 05:23:08,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-08-27 05:23:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 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 05:23:08,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-08-27 05:23:08,411 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 7 [2021-08-27 05:23:08,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:08,411 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-08-27 05:23:08,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 05:23:08,411 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-08-27 05:23:08,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 05:23:08,412 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:08,412 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:08,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 05:23:08,412 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-27 05:23:08,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:08,413 INFO L82 PathProgramCache]: Analyzing trace with hash -28282382, now seen corresponding path program 1 times [2021-08-27 05:23:08,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:23:08,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78674836] [2021-08-27 05:23:08,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:08,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:23:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 05:23:08,447 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 05:23:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 05:23:08,514 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 05:23:08,514 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 05:23:08,515 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr6ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:23:08,520 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 05:23:08,520 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 05:23:08,520 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 05:23:08,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 05:23:08,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 05:23:08,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 05:23:08,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 05:23:08,529 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:23:08,537 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-27 05:23:08,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:23:08 BoogieIcfgContainer [2021-08-27 05:23:08,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:23:08,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:23:08,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:23:08,547 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:23:08,548 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:23:07" (3/4) ... [2021-08-27 05:23:08,551 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 05:23:08,551 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:23:08,553 INFO L168 Benchmark]: Toolchain (without parser) took 1866.86 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 62.3 MB in the beginning and 69.8 MB in the end (delta: -7.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:08,556 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory was 60.8 MB in the beginning and 60.7 MB in the end (delta: 67.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:23:08,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.61 ms. Allocated memory is still 79.7 MB. Free memory was 62.0 MB in the beginning and 56.8 MB in the end (delta: 5.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:08,558 INFO L168 Benchmark]: Boogie Preprocessor took 79.89 ms. Allocated memory is still 79.7 MB. Free memory was 56.6 MB in the beginning and 54.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:08,559 INFO L168 Benchmark]: RCFGBuilder took 556.30 ms. Allocated memory is still 79.7 MB. Free memory was 54.4 MB in the beginning and 41.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:08,559 INFO L168 Benchmark]: TraceAbstraction took 831.43 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 41.3 MB in the beginning and 70.6 MB in the end (delta: -29.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:23:08,560 INFO L168 Benchmark]: Witness Printer took 4.09 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 69.8 MB in the end (delta: 881.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:08,565 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory was 60.8 MB in the beginning and 60.7 MB in the end (delta: 67.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 389.61 ms. Allocated memory is still 79.7 MB. Free memory was 62.0 MB in the beginning and 56.8 MB in the end (delta: 5.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.89 ms. Allocated memory is still 79.7 MB. Free memory was 56.6 MB in the beginning and 54.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 556.30 ms. Allocated memory is still 79.7 MB. Free memory was 54.4 MB in the beginning and 41.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 831.43 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 41.3 MB in the beginning and 70.6 MB in the end (delta: -29.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.09 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 69.8 MB in the end (delta: 881.0 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: 523]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 523. Possible FailurePath: [L525-L532] union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; [L533] data.p0 = malloc(37U) VAL [data={3:0}, malloc(37U)={-1:0}] [L534] data.str.p2 = &data VAL [data={3:0}] [L535] data.str.c[1] = sizeof data.str.p1 VAL [data={3:0}] [L536] return 0; [L536] return 0; VAL [\result=0] - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 40 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 746.1ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 11.9ms, AutomataDifference: 119.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 11 SDslu, 17 SDs, 0 SdLazy, 41 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 54.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 26.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.2ms SsaConstructionTime, 96.0ms SatisfiabilityAnalysisTime, 230.7ms InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 05:23:08,610 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 05:23:10,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:23:10,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:23:10,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:23:10,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:23:10,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:23:10,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:23:10,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:23:10,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:23:10,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:23:10,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:23:10,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:23:10,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:23:10,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:23:10,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:23:10,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:23:10,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:23:10,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:23:10,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:23:10,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:23:10,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:23:10,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:23:10,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:23:10,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:23:10,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:23:10,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:23:10,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:23:10,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:23:10,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:23:10,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:23:10,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:23:10,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:23:10,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:23:10,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:23:10,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:23:10,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:23:10,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:23:10,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:23:10,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:23:10,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:23:10,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:23:10,607 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 05:23:10,638 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:23:10,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:23:10,639 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:23:10,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:23:10,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:23:10,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:23:10,642 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:23:10,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:23:10,643 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:23:10,643 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:23:10,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:23:10,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:23:10,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:23:10,644 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:23:10,645 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:23:10,645 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:23:10,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:23:10,645 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:23:10,656 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 05:23:10,656 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 05:23:10,657 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:23:10,657 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:23:10,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:23:10,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:23:10,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:23:10,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:23:10,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:23:10,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:23:10,659 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 05:23:10,659 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 05:23:10,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:23:10,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 05:23:10,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3baf3e1382b3477cfa26255004191fb506be280 [2021-08-27 05:23:10,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:23:11,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:23:11,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:23:11,006 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:23:11,006 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:23:11,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0158-2.i [2021-08-27 05:23:11,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41a169cd6/b652cd896f9340768c2362d9e47edf3e/FLAG47493d05b [2021-08-27 05:23:11,597 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:23:11,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0158-2.i [2021-08-27 05:23:11,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41a169cd6/b652cd896f9340768c2362d9e47edf3e/FLAG47493d05b [2021-08-27 05:23:11,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41a169cd6/b652cd896f9340768c2362d9e47edf3e [2021-08-27 05:23:11,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:23:11,919 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:23:11,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:23:11,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:23:11,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:23:11,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:23:11" (1/1) ... [2021-08-27 05:23:11,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e79edcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:11, skipping insertion in model container [2021-08-27 05:23:11,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:23:11" (1/1) ... [2021-08-27 05:23:11,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:23:11,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:23:12,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:23:12,226 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:23:12,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:23:12,325 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:23:12,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:12 WrapperNode [2021-08-27 05:23:12,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:23:12,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:23:12,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:23:12,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:23:12,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:12" (1/1) ... [2021-08-27 05:23:12,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:12" (1/1) ... [2021-08-27 05:23:12,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:12" (1/1) ... [2021-08-27 05:23:12,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:12" (1/1) ... [2021-08-27 05:23:12,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:12" (1/1) ... [2021-08-27 05:23:12,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:12" (1/1) ... [2021-08-27 05:23:12,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:12" (1/1) ... [2021-08-27 05:23:12,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:23:12,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:23:12,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:23:12,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:23:12,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:12" (1/1) ... [2021-08-27 05:23:12,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:23:12,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:23:12,416 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 05:23:12,418 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 05:23:12,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:23:12,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:23:12,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 05:23:12,449 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 05:23:12,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:23:12,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:23:12,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 05:23:12,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 05:23:12,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 05:23:12,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:23:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:23:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 05:23:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 05:23:12,451 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 05:23:12,451 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 05:23:12,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 05:23:12,451 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:23:12,451 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:23:12,451 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:23:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:23:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:23:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:23:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:23:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:23:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:23:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:23:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:23:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:23:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:23:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:23:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:23:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:23:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:23:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:23:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 05:23:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 05:23:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 05:23:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:23:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:23:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:23:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:23:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:23:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:23:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:23:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:23:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:23:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:23:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:23:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:23:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:23:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:23:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:23:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:23:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:23:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:23:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:23:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:23:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:23:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:23:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:23:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:23:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:23:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:23:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:23:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:23:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:23:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:23:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:23:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:23:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:23:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:23:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:23:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:23:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:23:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:23:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:23:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:23:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:23:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 05:23:12,462 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:23:12,462 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 05:23:12,462 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:23:12,462 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:23:12,462 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 05:23:12,462 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:23:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:23:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:23:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:23:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:23:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:23:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:23:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:23:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:23:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:23:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:23:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:23:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:23:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:23:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:23:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:23:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:23:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:23:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:23:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:23:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:23:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:23:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:23:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:23:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:23:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:23:12,467 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:23:12,467 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:23:12,467 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:23:12,467 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:23:12,467 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:23:12,467 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:23:12,468 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:23:12,468 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:23:12,468 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:23:12,468 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:23:12,468 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:23:12,468 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:23:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:23:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:23:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 05:23:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-27 05:23:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:23:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:23:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-27 05:23:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:23:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 05:23:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-27 05:23:12,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 05:23:12,926 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:23:12,927 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-27 05:23:12,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:23:12 BoogieIcfgContainer [2021-08-27 05:23:12,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:23:12,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:23:12,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:23:12,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:23:12,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:23:11" (1/3) ... [2021-08-27 05:23:12,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79407932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:23:12, skipping insertion in model container [2021-08-27 05:23:12,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:12" (2/3) ... [2021-08-27 05:23:12,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79407932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:23:12, skipping insertion in model container [2021-08-27 05:23:12,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:23:12" (3/3) ... [2021-08-27 05:23:12,936 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-2.i [2021-08-27 05:23:12,941 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:23:12,941 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-27 05:23:12,987 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:23:12,995 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 05:23:12,995 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-27 05:23:13,006 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 10 states have (on average 1.7) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:23:13,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:23:13,012 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:13,012 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:13,012 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-27 05:23:13,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:13,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1579467459, now seen corresponding path program 1 times [2021-08-27 05:23:13,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:23:13,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654082359] [2021-08-27 05:23:13,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:13,029 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:23:13,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:23:13,032 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 05:23:13,041 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 05:23:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:13,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 05:23:13,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:13,319 INFO L354 Elim1Store]: treesize reduction 13, result has 35.0 percent of original size [2021-08-27 05:23:13,321 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 1 case distinctions, treesize of input 9 treesize of output 13 [2021-08-27 05:23:13,366 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 05:23:13,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:23:13,426 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 05:23:13,427 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:23:13,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654082359] [2021-08-27 05:23:13,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654082359] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:13,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:13,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 05:23:13,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817628236] [2021-08-27 05:23:13,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:23:13,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:23:13,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:23:13,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:23:13,451 INFO L87 Difference]: Start difference. First operand has 22 states, 10 states have (on average 1.7) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 05:23:13,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:13,513 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-08-27 05:23:13,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:23:13,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 7 [2021-08-27 05:23:13,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:13,521 INFO L225 Difference]: With dead ends: 19 [2021-08-27 05:23:13,521 INFO L226 Difference]: Without dead ends: 16 [2021-08-27 05:23:13,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:23:13,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-27 05:23:13,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-27 05:23:13,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 12 states have internal predecessors, (12), 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 05:23:13,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2021-08-27 05:23:13,549 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 7 [2021-08-27 05:23:13,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:13,550 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2021-08-27 05:23:13,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 05:23:13,550 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2021-08-27 05:23:13,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:23:13,551 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:13,551 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:13,564 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 05:23:13,760 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 05:23:13,761 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-27 05:23:13,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:13,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1579467458, now seen corresponding path program 1 times [2021-08-27 05:23:13,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:23:13,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155806117] [2021-08-27 05:23:13,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:13,765 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:23:13,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:23:13,766 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 05:23:13,770 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 05:23:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:13,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 05:23:13,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:13,956 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 05:23:13,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-08-27 05:23:13,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2021-08-27 05:23:13,999 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 05:23:13,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:23:14,064 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 05:23:14,064 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:23:14,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155806117] [2021-08-27 05:23:14,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155806117] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:14,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:14,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-08-27 05:23:14,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167240787] [2021-08-27 05:23:14,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 05:23:14,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:23:14,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 05:23:14,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:23:14,068 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 05:23:14,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:14,110 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-08-27 05:23:14,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:23:14,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 7 [2021-08-27 05:23:14,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:14,112 INFO L225 Difference]: With dead ends: 13 [2021-08-27 05:23:14,112 INFO L226 Difference]: Without dead ends: 13 [2021-08-27 05:23:14,113 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:23:14,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-08-27 05:23:14,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-08-27 05:23:14,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 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 05:23:14,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-08-27 05:23:14,115 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 7 [2021-08-27 05:23:14,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:14,116 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-08-27 05:23:14,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 05:23:14,116 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-08-27 05:23:14,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 05:23:14,117 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:14,117 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:14,129 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 05:23:14,326 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 05:23:14,326 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-27 05:23:14,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:14,327 INFO L82 PathProgramCache]: Analyzing trace with hash -816106894, now seen corresponding path program 1 times [2021-08-27 05:23:14,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:23:14,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903195315] [2021-08-27 05:23:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:14,329 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:23:14,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:23:14,330 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 05:23:14,345 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 05:23:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 05:23:14,508 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 05:23:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 05:23:14,584 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-27 05:23:14,585 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 05:23:14,586 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr6ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:23:14,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 05:23:14,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 05:23:14,588 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 05:23:14,588 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 05:23:14,588 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 05:23:14,588 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 05:23:14,601 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 05:23:14,789 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 05:23:14,794 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:23:14,801 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-27 05:23:14,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:23:14 BoogieIcfgContainer [2021-08-27 05:23:14,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:23:14,812 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:23:14,812 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:23:14,812 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:23:14,813 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:23:12" (3/4) ... [2021-08-27 05:23:14,818 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 05:23:14,818 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:23:14,819 INFO L168 Benchmark]: Toolchain (without parser) took 2900.16 ms. Allocated memory was 58.7 MB in the beginning and 92.3 MB in the end (delta: 33.6 MB). Free memory was 36.5 MB in the beginning and 48.0 MB in the end (delta: -11.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:14,820 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 58.7 MB. Free memory was 40.6 MB in the beginning and 40.6 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:23:14,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.32 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 36.4 MB in the beginning and 53.1 MB in the end (delta: -16.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:14,824 INFO L168 Benchmark]: Boogie Preprocessor took 48.95 ms. Allocated memory is still 75.5 MB. Free memory was 53.1 MB in the beginning and 50.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:14,825 INFO L168 Benchmark]: RCFGBuilder took 552.36 ms. Allocated memory is still 75.5 MB. Free memory was 50.2 MB in the beginning and 45.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:14,825 INFO L168 Benchmark]: TraceAbstraction took 1881.16 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 45.2 MB in the beginning and 48.8 MB in the end (delta: -3.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:14,827 INFO L168 Benchmark]: Witness Printer took 6.43 ms. Allocated memory is still 92.3 MB. Free memory was 48.8 MB in the beginning and 48.0 MB in the end (delta: 756.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:23:14,829 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 58.7 MB. Free memory was 40.6 MB in the beginning and 40.6 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 405.32 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 36.4 MB in the beginning and 53.1 MB in the end (delta: -16.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.95 ms. Allocated memory is still 75.5 MB. Free memory was 53.1 MB in the beginning and 50.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 552.36 ms. Allocated memory is still 75.5 MB. Free memory was 50.2 MB in the beginning and 45.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1881.16 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 45.2 MB in the beginning and 48.8 MB in the end (delta: -3.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Witness Printer took 6.43 ms. Allocated memory is still 92.3 MB. Free memory was 48.8 MB in the beginning and 48.0 MB in the end (delta: 756.0 kB). 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: 523]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 523. Possible FailurePath: [L525-L532] union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; [L533] data.p0 = malloc(37U) VAL [data={4099:0}, malloc(37U)={1:0}] [L534] data.str.p2 = &data VAL [data={4099:0}] [L535] data.str.c[1] = sizeof data.str.p1 VAL [data={4099:0}] [L536] return 0; [L536] return 0; VAL [\result=0] - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 46 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 1806.0ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 9.7ms, AutomataDifference: 132.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 19 SDtfs, 11 SDslu, 16 SDs, 0 SdLazy, 19 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 67.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 36.0ms SsaConstructionTime, 98.6ms SatisfiabilityAnalysisTime, 378.1ms InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 1 QuantifiedInterpolants, 62 SizeOfPredicates, 5 NumberOfNonLiveVariables, 122 ConjunctsInSsa, 6 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 05:23:14,879 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...