./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version eb692b52 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/ldv-memsafety/memleaks_test8_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 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 06:02:32,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 06:02:32,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 06:02:32,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 06:02:32,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 06:02:32,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 06:02:32,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 06:02:32,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 06:02:32,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 06:02:32,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 06:02:32,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 06:02:32,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 06:02:32,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 06:02:32,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 06:02:32,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 06:02:32,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 06:02:32,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 06:02:32,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 06:02:32,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 06:02:32,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 06:02:32,094 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 06:02:32,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 06:02:32,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 06:02:32,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 06:02:32,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 06:02:32,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 06:02:32,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 06:02:32,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 06:02:32,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 06:02:32,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 06:02:32,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 06:02:32,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 06:02:32,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 06:02:32,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 06:02:32,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 06:02:32,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 06:02:32,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 06:02:32,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 06:02:32,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 06:02:32,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 06:02:32,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 06:02:32,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 06:02:32,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-20 06:02:32,148 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 06:02:32,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 06:02:32,149 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 06:02:32,149 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 06:02:32,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 06:02:32,150 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 06:02:32,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 06:02:32,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 06:02:32,155 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 06:02:32,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 06:02:32,157 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 06:02:32,157 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-20 06:02:32,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 06:02:32,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 06:02:32,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 06:02:32,158 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-20 06:02:32,158 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-20 06:02:32,158 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-20 06:02:32,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 06:02:32,158 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 06:02:32,159 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 06:02:32,159 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 06:02:32,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 06:02:32,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 06:02:32,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 06:02:32,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 06:02:32,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 06:02:32,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 06:02:32,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 06:02:32,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 06:02:32,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 [2022-07-20 06:02:32,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 06:02:32,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 06:02:32,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 06:02:32,440 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 06:02:32,441 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 06:02:32,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2022-07-20 06:02:32,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/489ef7e20/1429cf4967ac4f88b8c8801f56acb2b1/FLAGc81fe9b5f [2022-07-20 06:02:32,955 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 06:02:32,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2022-07-20 06:02:32,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/489ef7e20/1429cf4967ac4f88b8c8801f56acb2b1/FLAGc81fe9b5f [2022-07-20 06:02:32,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/489ef7e20/1429cf4967ac4f88b8c8801f56acb2b1 [2022-07-20 06:02:32,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 06:02:32,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 06:02:32,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 06:02:32,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 06:02:33,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 06:02:33,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:02:32" (1/1) ... [2022-07-20 06:02:33,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@952c5b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:33, skipping insertion in model container [2022-07-20 06:02:33,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:02:32" (1/1) ... [2022-07-20 06:02:33,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 06:02:33,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 06:02:33,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:02:33,464 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-07-20 06:02:33,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3db8d09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:33, skipping insertion in model container [2022-07-20 06:02:33,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 06:02:33,466 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-20 06:02:33,469 INFO L158 Benchmark]: Toolchain (without parser) took 474.67ms. Allocated memory is still 96.5MB. Free memory was 63.5MB in the beginning and 67.3MB in the end (delta: -3.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-20 06:02:33,470 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 52.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 06:02:33,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 472.40ms. Allocated memory is still 96.5MB. Free memory was 63.3MB in the beginning and 67.3MB in the end (delta: -4.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-20 06:02:33,473 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 52.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 472.40ms. Allocated memory is still 96.5MB. Free memory was 63.3MB in the beginning and 67.3MB in the end (delta: -4.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/ldv-memsafety/memleaks_test8_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 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 06:02:35,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 06:02:35,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 06:02:35,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 06:02:35,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 06:02:35,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 06:02:35,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 06:02:35,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 06:02:35,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 06:02:35,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 06:02:35,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 06:02:35,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 06:02:35,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 06:02:35,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 06:02:35,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 06:02:35,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 06:02:35,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 06:02:35,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 06:02:35,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 06:02:35,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 06:02:35,452 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 06:02:35,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 06:02:35,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 06:02:35,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 06:02:35,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 06:02:35,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 06:02:35,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 06:02:35,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 06:02:35,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 06:02:35,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 06:02:35,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 06:02:35,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 06:02:35,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 06:02:35,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 06:02:35,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 06:02:35,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 06:02:35,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 06:02:35,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 06:02:35,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 06:02:35,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 06:02:35,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 06:02:35,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 06:02:35,486 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-20 06:02:35,527 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 06:02:35,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 06:02:35,528 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 06:02:35,528 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 06:02:35,529 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 06:02:35,529 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 06:02:35,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 06:02:35,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 06:02:35,530 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 06:02:35,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 06:02:35,531 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 06:02:35,532 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-20 06:02:35,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 06:02:35,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 06:02:35,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 06:02:35,533 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-20 06:02:35,533 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-20 06:02:35,533 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-20 06:02:35,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 06:02:35,533 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 06:02:35,533 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-20 06:02:35,534 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-20 06:02:35,534 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 06:02:35,534 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 06:02:35,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 06:02:35,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 06:02:35,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 06:02:35,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 06:02:35,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 06:02:35,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 06:02:35,536 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-20 06:02:35,536 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-20 06:02:35,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-20 06:02:35,536 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 [2022-07-20 06:02:35,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 06:02:35,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 06:02:35,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 06:02:35,915 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 06:02:35,916 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 06:02:35,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2022-07-20 06:02:35,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7d64a641/1710566eaad94a198172e16dd2308c21/FLAG590415e7c [2022-07-20 06:02:36,543 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 06:02:36,544 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2022-07-20 06:02:36,573 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7d64a641/1710566eaad94a198172e16dd2308c21/FLAG590415e7c [2022-07-20 06:02:36,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7d64a641/1710566eaad94a198172e16dd2308c21 [2022-07-20 06:02:36,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 06:02:36,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 06:02:36,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 06:02:36,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 06:02:36,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 06:02:36,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:02:36" (1/1) ... [2022-07-20 06:02:36,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7709f415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:36, skipping insertion in model container [2022-07-20 06:02:36,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:02:36" (1/1) ... [2022-07-20 06:02:36,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 06:02:37,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 06:02:37,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:02:37,455 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-20 06:02:37,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 06:02:37,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:02:37,548 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 06:02:37,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:02:37,669 INFO L208 MainTranslator]: Completed translation [2022-07-20 06:02:37,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:37 WrapperNode [2022-07-20 06:02:37,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 06:02:37,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 06:02:37,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 06:02:37,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 06:02:37,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:37" (1/1) ... [2022-07-20 06:02:37,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:37" (1/1) ... [2022-07-20 06:02:37,733 INFO L137 Inliner]: procedures = 167, calls = 72, calls flagged for inlining = 22, calls inlined = 4, statements flattened = 19 [2022-07-20 06:02:37,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 06:02:37,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 06:02:37,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 06:02:37,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 06:02:37,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:37" (1/1) ... [2022-07-20 06:02:37,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:37" (1/1) ... [2022-07-20 06:02:37,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:37" (1/1) ... [2022-07-20 06:02:37,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:37" (1/1) ... [2022-07-20 06:02:37,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:37" (1/1) ... [2022-07-20 06:02:37,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:37" (1/1) ... [2022-07-20 06:02:37,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:37" (1/1) ... [2022-07-20 06:02:37,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 06:02:37,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 06:02:37,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 06:02:37,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 06:02:37,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:37" (1/1) ... [2022-07-20 06:02:37,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 06:02:37,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 06:02:37,868 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) [2022-07-20 06:02:37,890 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 [2022-07-20 06:02:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-20 06:02:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-20 06:02:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 06:02:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 06:02:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure free_8 [2022-07-20 06:02:37,916 INFO L138 BoogieDeclarations]: Found implementation of procedure free_8 [2022-07-20 06:02:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 06:02:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-20 06:02:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 06:02:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 06:02:38,054 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 06:02:38,056 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 06:02:38,190 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 06:02:38,197 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 06:02:38,201 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-20 06:02:38,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:02:38 BoogieIcfgContainer [2022-07-20 06:02:38,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 06:02:38,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 06:02:38,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 06:02:38,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 06:02:38,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:02:36" (1/3) ... [2022-07-20 06:02:38,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48911250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:02:38, skipping insertion in model container [2022-07-20 06:02:38,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:37" (2/3) ... [2022-07-20 06:02:38,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48911250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:02:38, skipping insertion in model container [2022-07-20 06:02:38,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:02:38" (3/3) ... [2022-07-20 06:02:38,212 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test8_2.i [2022-07-20 06:02:38,226 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 06:02:38,226 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-20 06:02:38,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 06:02:38,298 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6726d923, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@437c7ded [2022-07-20 06:02:38,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-20 06:02:38,303 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.375) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 06:02:38,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-20 06:02:38,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:02:38,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:02:38,311 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting free_8Err0ASSERT_VIOLATIONMEMORY_FREE === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:02:38,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:02:38,317 INFO L85 PathProgramCache]: Analyzing trace with hash 435848335, now seen corresponding path program 1 times [2022-07-20 06:02:38,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:02:38,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839844576] [2022-07-20 06:02:38,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:02:38,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:02:38,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:02:38,333 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) [2022-07-20 06:02:38,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-20 06:02:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:02:38,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 06:02:38,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:02:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:02:38,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:02:38,509 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:02:38,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839844576] [2022-07-20 06:02:38,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839844576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:02:38,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:02:38,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 06:02:38,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879232924] [2022-07-20 06:02:38,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:02:38,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 06:02:38,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:02:38,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 06:02:38,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:02:38,542 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.375) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-07-20 06:02:38,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:02:38,592 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-07-20 06:02:38,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 06:02:38,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Word has length 12 [2022-07-20 06:02:38,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:02:38,602 INFO L225 Difference]: With dead ends: 25 [2022-07-20 06:02:38,602 INFO L226 Difference]: Without dead ends: 23 [2022-07-20 06:02:38,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-20 06:02:38,607 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 20 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 06:02:38,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 63 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 06:02:38,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-20 06:02:38,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-20 06:02:38,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 06:02:38,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-07-20 06:02:38,645 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2022-07-20 06:02:38,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:02:38,645 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-07-20 06:02:38,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-07-20 06:02:38,645 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-07-20 06:02:38,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-20 06:02:38,646 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:02:38,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:02:38,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-20 06:02:38,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:02:38,857 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting free_8Err1ASSERT_VIOLATIONMEMORY_FREE === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:02:38,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:02:38,857 INFO L85 PathProgramCache]: Analyzing trace with hash 626396533, now seen corresponding path program 1 times [2022-07-20 06:02:38,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:02:38,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603967193] [2022-07-20 06:02:38,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:02:38,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:02:38,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:02:38,860 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) [2022-07-20 06:02:38,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-20 06:02:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:02:38,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 06:02:38,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:02:39,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:02:39,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:02:39,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:02:39,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603967193] [2022-07-20 06:02:39,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603967193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:02:39,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:02:39,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 06:02:39,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560458807] [2022-07-20 06:02:39,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:02:39,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:02:39,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:02:39,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:02:39,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:02:39,026 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-07-20 06:02:39,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:02:39,127 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-07-20 06:02:39,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 06:02:39,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) Word has length 13 [2022-07-20 06:02:39,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:02:39,129 INFO L225 Difference]: With dead ends: 37 [2022-07-20 06:02:39,129 INFO L226 Difference]: Without dead ends: 37 [2022-07-20 06:02:39,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:02:39,131 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 35 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:02:39,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 56 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:02:39,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-20 06:02:39,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2022-07-20 06:02:39,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 26 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-20 06:02:39,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-07-20 06:02:39,139 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 13 [2022-07-20 06:02:39,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:02:39,140 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-07-20 06:02:39,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-07-20 06:02:39,152 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-07-20 06:02:39,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-20 06:02:39,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:02:39,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:02:39,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-20 06:02:39,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:02:39,365 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting free_8Err1ASSERT_VIOLATIONMEMORY_FREE === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:02:39,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:02:39,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1181057930, now seen corresponding path program 1 times [2022-07-20 06:02:39,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:02:39,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866939046] [2022-07-20 06:02:39,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:02:39,366 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:02:39,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:02:39,368 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) [2022-07-20 06:02:39,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-20 06:02:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:02:39,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 06:02:39,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:02:39,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:02:39,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:02:39,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:02:39,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866939046] [2022-07-20 06:02:39,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866939046] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:02:39,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:02:39,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 06:02:39,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132387714] [2022-07-20 06:02:39,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:02:39,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 06:02:39,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:02:39,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 06:02:39,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:02:39,498 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-07-20 06:02:39,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:02:39,567 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2022-07-20 06:02:39,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 06:02:39,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) Word has length 13 [2022-07-20 06:02:39,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:02:39,569 INFO L225 Difference]: With dead ends: 32 [2022-07-20 06:02:39,570 INFO L226 Difference]: Without dead ends: 32 [2022-07-20 06:02:39,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-20 06:02:39,573 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 14 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 06:02:39,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 86 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 06:02:39,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-20 06:02:39,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2022-07-20 06:02:39,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.1) internal successors, (22), 22 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-20 06:02:39,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2022-07-20 06:02:39,590 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 13 [2022-07-20 06:02:39,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:02:39,590 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2022-07-20 06:02:39,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-07-20 06:02:39,591 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-07-20 06:02:39,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-20 06:02:39,592 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:02:39,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:02:39,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-20 06:02:39,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:02:39,793 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting free_8Err2ASSERT_VIOLATIONMEMORY_FREE === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:02:39,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:02:39,794 INFO L85 PathProgramCache]: Analyzing trace with hash -2056543919, now seen corresponding path program 1 times [2022-07-20 06:02:39,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:02:39,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738049093] [2022-07-20 06:02:39,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:02:39,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:02:39,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:02:39,796 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:02:39,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-20 06:02:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:02:39,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 06:02:39,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:02:39,897 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-20 06:02:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:02:39,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:02:39,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:02:39,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738049093] [2022-07-20 06:02:39,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738049093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:02:39,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:02:39,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 06:02:39,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069742001] [2022-07-20 06:02:39,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:02:39,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 06:02:39,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:02:39,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 06:02:39,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:02:39,949 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-07-20 06:02:40,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:02:40,010 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-07-20 06:02:40,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 06:02:40,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) Word has length 14 [2022-07-20 06:02:40,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:02:40,015 INFO L225 Difference]: With dead ends: 35 [2022-07-20 06:02:40,016 INFO L226 Difference]: Without dead ends: 35 [2022-07-20 06:02:40,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:02:40,026 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 06:02:40,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 06:02:40,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-20 06:02:40,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-07-20 06:02:40,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-20 06:02:40,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-07-20 06:02:40,041 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 14 [2022-07-20 06:02:40,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:02:40,042 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-07-20 06:02:40,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-07-20 06:02:40,043 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-07-20 06:02:40,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-20 06:02:40,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:02:40,045 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:02:40,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-07-20 06:02:40,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:02:40,255 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:02:40,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:02:40,256 INFO L85 PathProgramCache]: Analyzing trace with hash -503206040, now seen corresponding path program 1 times [2022-07-20 06:02:40,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:02:40,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371838187] [2022-07-20 06:02:40,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:02:40,257 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:02:40,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:02:40,259 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:02:40,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-20 06:02:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:02:40,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-20 06:02:40,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:02:40,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-20 06:02:40,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:02:40,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:02:40,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371838187] [2022-07-20 06:02:40,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371838187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:02:40,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:02:40,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 06:02:40,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175513158] [2022-07-20 06:02:40,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:02:40,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 06:02:40,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:02:40,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 06:02:40,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 06:02:40,375 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-20 06:02:40,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:02:40,402 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2022-07-20 06:02:40,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 06:02:40,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2022-07-20 06:02:40,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:02:40,403 INFO L225 Difference]: With dead ends: 38 [2022-07-20 06:02:40,403 INFO L226 Difference]: Without dead ends: 26 [2022-07-20 06:02:40,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 06:02:40,404 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 06:02:40,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 56 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 06:02:40,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-20 06:02:40,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-20 06:02:40,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 06:02:40,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2022-07-20 06:02:40,408 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 20 [2022-07-20 06:02:40,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:02:40,408 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2022-07-20 06:02:40,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-20 06:02:40,409 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2022-07-20 06:02:40,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-20 06:02:40,409 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:02:40,410 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:02:40,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-20 06:02:40,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:02:40,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting free_8Err2ASSERT_VIOLATIONMEMORY_FREE === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:02:40,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:02:40,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1029118526, now seen corresponding path program 1 times [2022-07-20 06:02:40,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:02:40,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710391605] [2022-07-20 06:02:40,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:02:40,620 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:02:40,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:02:40,623 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:02:40,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-20 06:02:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 06:02:40,671 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-20 06:02:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 06:02:40,735 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-20 06:02:40,736 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-20 06:02:40,737 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location free_8Err2ASSERT_VIOLATIONMEMORY_FREE (3 of 4 remaining) [2022-07-20 06:02:40,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_8Err0ASSERT_VIOLATIONMEMORY_FREE (2 of 4 remaining) [2022-07-20 06:02:40,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_8Err1ASSERT_VIOLATIONMEMORY_FREE (1 of 4 remaining) [2022-07-20 06:02:40,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2022-07-20 06:02:40,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-20 06:02:40,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:02:40,947 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-20 06:02:40,952 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-20 06:02:40,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:02:40 BoogieIcfgContainer [2022-07-20 06:02:40,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-20 06:02:40,984 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-20 06:02:40,984 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-20 06:02:40,984 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-20 06:02:40,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:02:38" (3/4) ... [2022-07-20 06:02:40,986 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-20 06:02:41,044 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-20 06:02:41,045 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-20 06:02:41,045 INFO L158 Benchmark]: Toolchain (without parser) took 4070.14ms. Allocated memory was 50.3MB in the beginning and 79.7MB in the end (delta: 29.4MB). Free memory was 35.2MB in the beginning and 60.5MB in the end (delta: -25.2MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2022-07-20 06:02:41,046 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 50.3MB. Free memory was 31.8MB in the beginning and 31.8MB in the end (delta: 32.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 06:02:41,046 INFO L158 Benchmark]: CACSL2BoogieTranslator took 689.95ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 35.1MB in the beginning and 45.0MB in the end (delta: -9.9MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2022-07-20 06:02:41,046 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.52ms. Allocated memory is still 65.0MB. Free memory was 45.0MB in the beginning and 42.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-20 06:02:41,047 INFO L158 Benchmark]: Boogie Preprocessor took 48.10ms. Allocated memory is still 65.0MB. Free memory was 42.9MB in the beginning and 41.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-20 06:02:41,048 INFO L158 Benchmark]: RCFGBuilder took 420.36ms. Allocated memory is still 65.0MB. Free memory was 41.4MB in the beginning and 31.1MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-20 06:02:41,048 INFO L158 Benchmark]: TraceAbstraction took 2778.07ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 30.5MB in the beginning and 34.8MB in the end (delta: -4.3MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2022-07-20 06:02:41,049 INFO L158 Benchmark]: Witness Printer took 61.09ms. Allocated memory is still 79.7MB. Free memory was 34.8MB in the beginning and 60.5MB in the end (delta: -25.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-20 06:02:41,051 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 50.3MB. Free memory was 31.8MB in the beginning and 31.8MB in the end (delta: 32.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 689.95ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 35.1MB in the beginning and 45.0MB in the end (delta: -9.9MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.52ms. Allocated memory is still 65.0MB. Free memory was 45.0MB in the beginning and 42.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.10ms. Allocated memory is still 65.0MB. Free memory was 42.9MB in the beginning and 41.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 420.36ms. Allocated memory is still 65.0MB. Free memory was 41.4MB in the beginning and 31.1MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2778.07ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 30.5MB in the beginning and 34.8MB in the end (delta: -4.3MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * Witness Printer took 61.09ms. Allocated memory is still 79.7MB. Free memory was 34.8MB in the beginning and 60.5MB in the end (delta: -25.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 762]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L757] int *a8; VAL [a8={0:0}, ldv_global_msg_list={1:0}] [L771] CALL entry_point() [L765] CALL alloc_8() [L759] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, a8={0:0}, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L759] RET, EXPR ldv_malloc(sizeof(int)) VAL [a8={0:0}, ldv_global_msg_list={1:0}, ldv_malloc(sizeof(int))={2:0}] [L759] a8 = (int *)ldv_malloc(sizeof(int)) [L765] RET alloc_8() [L766] CALL free_8() VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] COND TRUE \read(*a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) [L766] RET free_8() VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L767] CALL free_8() VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] COND TRUE \read(*a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 75 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 73 mSDsluCounter, 322 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 199 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 150 IncrementalHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 123 mSDtfsCounter, 150 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=2, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 253 SizeOfPredicates, 1 NumberOfNonLiveVariables, 226 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 3/3 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 proved your program to be incorrect! [2022-07-20 06:02:41,100 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free)