./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 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_test21-2.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 8cad73f64954eeb86e2707e579f8aca932182fe823da421e8ece02d4d63f0cc3 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 21:13:39,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 21:13:39,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 21:13:39,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 21:13:39,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 21:13:39,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 21:13:39,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 21:13:39,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 21:13:39,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 21:13:39,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 21:13:39,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 21:13:39,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 21:13:39,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 21:13:39,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 21:13:39,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 21:13:39,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 21:13:39,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 21:13:39,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 21:13:39,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 21:13:39,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 21:13:39,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 21:13:39,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 21:13:39,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 21:13:39,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 21:13:39,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 21:13:39,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 21:13:39,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 21:13:39,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 21:13:39,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 21:13:39,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 21:13:39,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 21:13:39,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 21:13:39,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 21:13:39,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 21:13:39,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 21:13:39,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 21:13:39,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 21:13:39,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 21:13:39,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 21:13:39,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 21:13:39,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 21:13:39,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-18 21:13:39,495 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 21:13:39,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 21:13:39,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 21:13:39,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 21:13:39,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 21:13:39,497 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 21:13:39,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 21:13:39,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 21:13:39,498 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 21:13:39,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 21:13:39,499 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 21:13:39,499 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 21:13:39,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 21:13:39,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 21:13:39,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 21:13:39,500 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 21:13:39,500 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 21:13:39,500 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-18 21:13:39,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 21:13:39,501 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 21:13:39,501 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 21:13:39,501 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 21:13:39,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 21:13:39,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 21:13:39,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 21:13:39,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 21:13:39,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 21:13:39,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 21:13:39,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 21:13:39,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 21:13:39,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 21:13:39,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cad73f64954eeb86e2707e579f8aca932182fe823da421e8ece02d4d63f0cc3 [2021-12-18 21:13:39,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 21:13:39,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 21:13:39,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 21:13:39,782 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 21:13:39,783 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 21:13:39,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2021-12-18 21:13:39,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe222fd8/265ec3724efb488c9ff4475b13519055/FLAGbfcf4ef3f [2021-12-18 21:13:40,258 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 21:13:40,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2021-12-18 21:13:40,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe222fd8/265ec3724efb488c9ff4475b13519055/FLAGbfcf4ef3f [2021-12-18 21:13:40,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe222fd8/265ec3724efb488c9ff4475b13519055 [2021-12-18 21:13:40,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 21:13:40,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 21:13:40,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 21:13:40,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 21:13:40,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 21:13:40,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:13:40" (1/1) ... [2021-12-18 21:13:40,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ba6e58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:13:40, skipping insertion in model container [2021-12-18 21:13:40,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:13:40" (1/1) ... [2021-12-18 21:13:40,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 21:13:40,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 21:13:41,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 21:13:41,056 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-18 21:13:41,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b53da14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:13:41, skipping insertion in model container [2021-12-18 21:13:41,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 21:13:41,057 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-18 21:13:41,060 INFO L158 Benchmark]: Toolchain (without parser) took 450.05ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 68.8MB in the beginning and 91.7MB in the end (delta: -22.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-18 21:13:41,061 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory was 57.5MB in the beginning and 57.4MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 21:13:41,062 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.72ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 68.4MB in the beginning and 91.7MB in the end (delta: -23.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-18 21:13:41,064 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory was 57.5MB in the beginning and 57.4MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 446.72ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 68.4MB in the beginning and 91.7MB in the end (delta: -23.3MB). Peak memory consumption was 8.4MB. 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 where the value type is smaller than the cast-to type 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_test21-2.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 8cad73f64954eeb86e2707e579f8aca932182fe823da421e8ece02d4d63f0cc3 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 21:13:42,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 21:13:42,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 21:13:42,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 21:13:42,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 21:13:42,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 21:13:42,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 21:13:42,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 21:13:42,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 21:13:42,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 21:13:42,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 21:13:42,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 21:13:42,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 21:13:42,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 21:13:42,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 21:13:42,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 21:13:42,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 21:13:42,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 21:13:42,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 21:13:42,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 21:13:42,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 21:13:42,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 21:13:42,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 21:13:42,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 21:13:42,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 21:13:42,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 21:13:42,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 21:13:42,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 21:13:42,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 21:13:42,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 21:13:42,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 21:13:42,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 21:13:42,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 21:13:42,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 21:13:42,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 21:13:42,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 21:13:42,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 21:13:42,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 21:13:42,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 21:13:42,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 21:13:42,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 21:13:42,949 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-18 21:13:42,982 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 21:13:42,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 21:13:42,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 21:13:42,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 21:13:42,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 21:13:42,985 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 21:13:42,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 21:13:42,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 21:13:42,987 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 21:13:42,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 21:13:42,988 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 21:13:42,988 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 21:13:42,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 21:13:42,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 21:13:42,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 21:13:42,989 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 21:13:42,989 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 21:13:42,989 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-18 21:13:42,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 21:13:42,989 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 21:13:42,989 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-18 21:13:42,990 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-18 21:13:42,990 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 21:13:42,990 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 21:13:42,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 21:13:42,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 21:13:42,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 21:13:42,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 21:13:42,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 21:13:42,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 21:13:42,991 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-18 21:13:42,991 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-18 21:13:42,992 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 21:13:42,992 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-18 21:13:42,992 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cad73f64954eeb86e2707e579f8aca932182fe823da421e8ece02d4d63f0cc3 [2021-12-18 21:13:43,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 21:13:43,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 21:13:43,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 21:13:43,362 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 21:13:43,363 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 21:13:43,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2021-12-18 21:13:43,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eef5c08a9/bb001e30e6ff4fe2b5a9c25ab15c4cf7/FLAG08986e9d0 [2021-12-18 21:13:43,943 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 21:13:43,944 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2021-12-18 21:13:43,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eef5c08a9/bb001e30e6ff4fe2b5a9c25ab15c4cf7/FLAG08986e9d0 [2021-12-18 21:13:44,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eef5c08a9/bb001e30e6ff4fe2b5a9c25ab15c4cf7 [2021-12-18 21:13:44,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 21:13:44,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 21:13:44,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 21:13:44,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 21:13:44,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 21:13:44,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:13:44" (1/1) ... [2021-12-18 21:13:44,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5467bf7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:13:44, skipping insertion in model container [2021-12-18 21:13:44,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:13:44" (1/1) ... [2021-12-18 21:13:44,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 21:13:44,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 21:13:44,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 21:13:44,750 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-18 21:13:44,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 21:13:44,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 21:13:44,831 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 21:13:44,892 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 21:13:44,952 INFO L208 MainTranslator]: Completed translation [2021-12-18 21:13:44,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:13:44 WrapperNode [2021-12-18 21:13:44,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 21:13:44,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 21:13:44,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 21:13:44,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 21:13:44,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:13:44" (1/1) ... [2021-12-18 21:13:44,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:13:44" (1/1) ... [2021-12-18 21:13:45,016 INFO L137 Inliner]: procedures = 167, calls = 71, calls flagged for inlining = 23, calls inlined = 5, statements flattened = 31 [2021-12-18 21:13:45,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 21:13:45,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 21:13:45,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 21:13:45,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 21:13:45,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:13:44" (1/1) ... [2021-12-18 21:13:45,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:13:44" (1/1) ... [2021-12-18 21:13:45,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:13:44" (1/1) ... [2021-12-18 21:13:45,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:13:44" (1/1) ... [2021-12-18 21:13:45,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:13:44" (1/1) ... [2021-12-18 21:13:45,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:13:44" (1/1) ... [2021-12-18 21:13:45,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:13:44" (1/1) ... [2021-12-18 21:13:45,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 21:13:45,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 21:13:45,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 21:13:45,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 21:13:45,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:13:44" (1/1) ... [2021-12-18 21:13:45,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 21:13:45,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 21:13:45,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 21:13:45,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 21:13:45,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 21:13:45,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 21:13:45,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 21:13:45,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 21:13:45,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 21:13:45,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 21:13:45,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 21:13:45,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 21:13:45,275 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 21:13:45,277 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 21:13:45,428 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 21:13:45,434 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 21:13:45,435 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 21:13:45,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:13:45 BoogieIcfgContainer [2021-12-18 21:13:45,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 21:13:45,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 21:13:45,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 21:13:45,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 21:13:45,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 09:13:44" (1/3) ... [2021-12-18 21:13:45,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4988c6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 09:13:45, skipping insertion in model container [2021-12-18 21:13:45,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:13:44" (2/3) ... [2021-12-18 21:13:45,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4988c6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 09:13:45, skipping insertion in model container [2021-12-18 21:13:45,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:13:45" (3/3) ... [2021-12-18 21:13:45,447 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test21-2.i [2021-12-18 21:13:45,451 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 21:13:45,451 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-18 21:13:45,496 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 21:13:45,504 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 21:13:45,505 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-18 21:13:45,526 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.4375) internal successors, (23), 20 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:13:45,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-18 21:13:45,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:13:45,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:13:45,536 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-18 21:13:45,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:13:45,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1812086039, now seen corresponding path program 1 times [2021-12-18 21:13:45,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:13:45,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967433984] [2021-12-18 21:13:45,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:13:45,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:13:45,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:13:45,559 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:13:45,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-18 21:13:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:13:45,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-18 21:13:45,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:13:45,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:13:45,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:13:45,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:13:45,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967433984] [2021-12-18 21:13:45,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967433984] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:13:45,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:13:45,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 21:13:45,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199136164] [2021-12-18 21:13:45,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:13:45,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 21:13:45,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:13:45,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 21:13:45,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-18 21:13:45,785 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.4375) internal successors, (23), 20 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:13:45,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:13:45,877 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-12-18 21:13:45,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 21:13:45,879 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-18 21:13:45,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:13:45,892 INFO L225 Difference]: With dead ends: 42 [2021-12-18 21:13:45,893 INFO L226 Difference]: Without dead ends: 36 [2021-12-18 21:13:45,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-18 21:13:45,897 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 65 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:13:45,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 137 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 21:13:45,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-18 21:13:45,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 24. [2021-12-18 21:13:45,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 21 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:13:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-12-18 21:13:45,925 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 12 [2021-12-18 21:13:45,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:13:45,926 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-12-18 21:13:45,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:13:45,926 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-12-18 21:13:45,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-18 21:13:45,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:13:45,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:13:45,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-18 21:13:46,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:13:46,135 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-18 21:13:46,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:13:46,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1812026457, now seen corresponding path program 1 times [2021-12-18 21:13:46,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:13:46,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287881899] [2021-12-18 21:13:46,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:13:46,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:13:46,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:13:46,141 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:13:46,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-18 21:13:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:13:46,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 21:13:46,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:13:46,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:13:46,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:13:46,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:13:46,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287881899] [2021-12-18 21:13:46,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287881899] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:13:46,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:13:46,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 21:13:46,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798982311] [2021-12-18 21:13:46,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:13:46,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 21:13:46,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:13:46,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 21:13:46,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 21:13:46,239 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:13:46,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:13:46,253 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-12-18 21:13:46,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 21:13:46,254 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-18 21:13:46,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:13:46,254 INFO L225 Difference]: With dead ends: 39 [2021-12-18 21:13:46,255 INFO L226 Difference]: Without dead ends: 39 [2021-12-18 21:13:46,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 21:13:46,256 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 11 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:13:46,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 88 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 21:13:46,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-18 21:13:46,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2021-12-18 21:13:46,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 21:13:46,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-12-18 21:13:46,262 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 12 [2021-12-18 21:13:46,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:13:46,262 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-12-18 21:13:46,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:13:46,262 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-12-18 21:13:46,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-18 21:13:46,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:13:46,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:13:46,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-18 21:13:46,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:13:46,472 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-18 21:13:46,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:13:46,473 INFO L85 PathProgramCache]: Analyzing trace with hash -69216122, now seen corresponding path program 1 times [2021-12-18 21:13:46,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:13:46,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942055325] [2021-12-18 21:13:46,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:13:46,473 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:13:46,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:13:46,475 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:13:46,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-18 21:13:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:13:46,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 21:13:46,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:13:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:13:46,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:13:46,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:13:46,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942055325] [2021-12-18 21:13:46,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942055325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:13:46,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:13:46,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 21:13:46,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914793329] [2021-12-18 21:13:46,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:13:46,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 21:13:46,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:13:46,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 21:13:46,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 21:13:46,583 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:13:46,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:13:46,603 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-12-18 21:13:46,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 21:13:46,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-18 21:13:46,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:13:46,605 INFO L225 Difference]: With dead ends: 30 [2021-12-18 21:13:46,605 INFO L226 Difference]: Without dead ends: 30 [2021-12-18 21:13:46,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 21:13:46,606 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:13:46,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 57 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 21:13:46,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-18 21:13:46,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2021-12-18 21:13:46,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 21:13:46,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-12-18 21:13:46,611 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 12 [2021-12-18 21:13:46,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:13:46,611 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-12-18 21:13:46,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:13:46,612 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-12-18 21:13:46,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-18 21:13:46,612 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:13:46,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:13:46,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-18 21:13:46,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:13:46,821 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-18 21:13:46,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:13:46,822 INFO L85 PathProgramCache]: Analyzing trace with hash -340092307, now seen corresponding path program 1 times [2021-12-18 21:13:46,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:13:46,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761351420] [2021-12-18 21:13:46,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:13:46,823 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:13:46,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:13:46,824 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:13:46,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-18 21:13:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:13:46,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-18 21:13:46,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:13:47,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:13:47,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:13:47,113 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:13:47,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761351420] [2021-12-18 21:13:47,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761351420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:13:47,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:13:47,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 21:13:47,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097469630] [2021-12-18 21:13:47,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:13:47,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 21:13:47,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:13:47,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 21:13:47,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-18 21:13:47,115 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:13:47,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:13:47,341 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-12-18 21:13:47,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 21:13:47,346 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-12-18 21:13:47,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:13:47,346 INFO L225 Difference]: With dead ends: 36 [2021-12-18 21:13:47,346 INFO L226 Difference]: Without dead ends: 36 [2021-12-18 21:13:47,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-12-18 21:13:47,347 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 59 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 21:13:47,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 84 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 21:13:47,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-18 21:13:47,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2021-12-18 21:13:47,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 26 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 21:13:47,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-12-18 21:13:47,352 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 13 [2021-12-18 21:13:47,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:13:47,352 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-12-18 21:13:47,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:13:47,352 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-12-18 21:13:47,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-18 21:13:47,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:13:47,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:13:47,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-18 21:13:47,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:13:47,560 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-18 21:13:47,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:13:47,561 INFO L85 PathProgramCache]: Analyzing trace with hash 2147420526, now seen corresponding path program 1 times [2021-12-18 21:13:47,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:13:47,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26728696] [2021-12-18 21:13:47,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:13:47,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:13:47,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:13:47,563 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:13:47,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-18 21:13:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:13:47,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 21:13:47,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:13:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:13:47,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:13:47,653 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:13:47,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26728696] [2021-12-18 21:13:47,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26728696] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:13:47,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:13:47,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 21:13:47,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655813629] [2021-12-18 21:13:47,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:13:47,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 21:13:47,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:13:47,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 21:13:47,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 21:13:47,655 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:13:47,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:13:47,668 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2021-12-18 21:13:47,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 21:13:47,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-12-18 21:13:47,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:13:47,669 INFO L225 Difference]: With dead ends: 29 [2021-12-18 21:13:47,669 INFO L226 Difference]: Without dead ends: 29 [2021-12-18 21:13:47,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 21:13:47,670 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:13:47,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 81 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 21:13:47,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-18 21:13:47,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-12-18 21:13:47,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 21:13:47,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-12-18 21:13:47,679 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 13 [2021-12-18 21:13:47,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:13:47,679 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-12-18 21:13:47,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:13:47,679 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-12-18 21:13:47,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-18 21:13:47,680 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:13:47,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:13:47,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-18 21:13:47,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:13:47,894 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-18 21:13:47,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:13:47,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1952926869, now seen corresponding path program 1 times [2021-12-18 21:13:47,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:13:47,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893432831] [2021-12-18 21:13:47,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:13:47,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:13:47,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:13:47,897 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) [2021-12-18 21:13:47,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-18 21:13:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:13:47,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-18 21:13:47,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:13:47,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 21:13:48,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:13:48,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:13:48,070 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:13:48,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893432831] [2021-12-18 21:13:48,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893432831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:13:48,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:13:48,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 21:13:48,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104995159] [2021-12-18 21:13:48,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:13:48,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 21:13:48,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:13:48,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 21:13:48,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-18 21:13:48,073 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:13:48,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:13:48,164 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-12-18 21:13:48,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 21:13:48,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-18 21:13:48,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:13:48,165 INFO L225 Difference]: With dead ends: 24 [2021-12-18 21:13:48,165 INFO L226 Difference]: Without dead ends: 24 [2021-12-18 21:13:48,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-18 21:13:48,166 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 21:13:48,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 62 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 21:13:48,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-18 21:13:48,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-12-18 21:13:48,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 21:13:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-12-18 21:13:48,170 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 14 [2021-12-18 21:13:48,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:13:48,170 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-12-18 21:13:48,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:13:48,170 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-12-18 21:13:48,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-18 21:13:48,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:13:48,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:13:48,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-18 21:13:48,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:13:48,372 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-18 21:13:48,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:13:48,372 INFO L85 PathProgramCache]: Analyzing trace with hash -2091935799, now seen corresponding path program 1 times [2021-12-18 21:13:48,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:13:48,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475233464] [2021-12-18 21:13:48,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:13:48,373 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:13:48,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:13:48,374 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:13:48,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-18 21:13:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:13:48,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 21:13:48,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:13:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:13:48,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:13:48,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:13:48,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475233464] [2021-12-18 21:13:48,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475233464] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:13:48,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:13:48,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 21:13:48,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000708723] [2021-12-18 21:13:48,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:13:48,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 21:13:48,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:13:48,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 21:13:48,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 21:13:48,439 INFO L87 Difference]: Start difference. First operand 24 states and 24 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, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:13:48,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:13:48,465 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2021-12-18 21:13:48,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 21:13:48,466 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, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-18 21:13:48,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:13:48,470 INFO L225 Difference]: With dead ends: 27 [2021-12-18 21:13:48,470 INFO L226 Difference]: Without dead ends: 18 [2021-12-18 21:13:48,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 21:13:48,473 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:13:48,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 21:13:48,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-18 21:13:48,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-18 21:13:48,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.0) internal successors, (15), 15 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:13:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2021-12-18 21:13:48,480 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 14 [2021-12-18 21:13:48,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:13:48,481 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2021-12-18 21:13:48,481 INFO L471 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, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:13:48,481 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2021-12-18 21:13:48,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-18 21:13:48,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:13:48,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:13:48,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-18 21:13:48,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:13:48,691 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-18 21:13:48,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:13:48,691 INFO L85 PathProgramCache]: Analyzing trace with hash -17303116, now seen corresponding path program 1 times [2021-12-18 21:13:48,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:13:48,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463240763] [2021-12-18 21:13:48,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:13:48,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:13:48,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:13:48,693 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:13:48,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-18 21:13:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:13:48,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-18 21:13:48,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:13:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:13:49,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:13:49,040 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:13:49,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463240763] [2021-12-18 21:13:49,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463240763] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:13:49,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:13:49,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 21:13:49,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990057168] [2021-12-18 21:13:49,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:13:49,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 21:13:49,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:13:49,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 21:13:49,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-18 21:13:49,042 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:13:49,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:13:49,052 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2021-12-18 21:13:49,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 21:13:49,053 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-18 21:13:49,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:13:49,053 INFO L225 Difference]: With dead ends: 17 [2021-12-18 21:13:49,053 INFO L226 Difference]: Without dead ends: 0 [2021-12-18 21:13:49,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-18 21:13:49,054 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:13:49,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 46 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 34 Unchecked, 0.0s Time] [2021-12-18 21:13:49,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-18 21:13:49,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-18 21:13:49,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:13:49,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-18 21:13:49,056 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-12-18 21:13:49,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:13:49,056 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-18 21:13:49,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:13:49,057 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-18 21:13:49,057 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-18 21:13:49,059 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE (3 of 4 remaining) [2021-12-18 21:13:49,059 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (2 of 4 remaining) [2021-12-18 21:13:49,059 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (1 of 4 remaining) [2021-12-18 21:13:49,060 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2021-12-18 21:13:49,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-18 21:13:49,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:13:49,271 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:13:49,273 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-18 21:13:49,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 09:13:49 BoogieIcfgContainer [2021-12-18 21:13:49,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-18 21:13:49,276 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-18 21:13:49,276 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-18 21:13:49,276 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-18 21:13:49,276 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:13:45" (3/4) ... [2021-12-18 21:13:49,278 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-18 21:13:49,283 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2021-12-18 21:13:49,286 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-12-18 21:13:49,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-18 21:13:49,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-18 21:13:49,318 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-18 21:13:49,319 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-18 21:13:49,319 INFO L158 Benchmark]: Toolchain (without parser) took 5056.22ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 38.0MB in the beginning and 27.2MB in the end (delta: 10.8MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2021-12-18 21:13:49,320 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 60.8MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 21:13:49,320 INFO L158 Benchmark]: CACSL2BoogieTranslator took 682.09ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 37.9MB in the beginning and 56.8MB in the end (delta: -19.0MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2021-12-18 21:13:49,322 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.68ms. Allocated memory is still 75.5MB. Free memory was 56.8MB in the beginning and 54.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-18 21:13:49,322 INFO L158 Benchmark]: Boogie Preprocessor took 45.05ms. Allocated memory is still 75.5MB. Free memory was 54.7MB in the beginning and 53.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 21:13:49,323 INFO L158 Benchmark]: RCFGBuilder took 372.86ms. Allocated memory is still 75.5MB. Free memory was 53.2MB in the beginning and 42.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-18 21:13:49,323 INFO L158 Benchmark]: TraceAbstraction took 3835.20ms. Allocated memory is still 75.5MB. Free memory was 42.5MB in the beginning and 30.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-18 21:13:49,324 INFO L158 Benchmark]: Witness Printer took 43.25ms. Allocated memory is still 75.5MB. Free memory was 29.9MB in the beginning and 27.2MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-18 21:13:49,326 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 60.8MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 682.09ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 37.9MB in the beginning and 56.8MB in the end (delta: -19.0MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.68ms. Allocated memory is still 75.5MB. Free memory was 56.8MB in the beginning and 54.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.05ms. Allocated memory is still 75.5MB. Free memory was 54.7MB in the beginning and 53.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 372.86ms. Allocated memory is still 75.5MB. Free memory was 53.2MB in the beginning and 42.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3835.20ms. Allocated memory is still 75.5MB. Free memory was 42.5MB in the beginning and 30.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 43.25ms. Allocated memory is still 75.5MB. Free memory was 29.9MB in the beginning and 27.2MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: 772]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 772]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 772]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 779]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 165 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 164 mSDsluCounter, 603 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 34 IncrementalHoareTripleChecker+Unchecked, 451 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 229 IncrementalHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 152 mSDtfsCounter, 229 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=4, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 37 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 99 ConstructedInterpolants, 12 QuantifiedInterpolants, 480 SizeOfPredicates, 31 NumberOfNonLiveVariables, 404 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-18 21:13:49,352 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 Result: TRUE