./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.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 f002fb5adc832f6023a0c06b1c5ecdb23a860b09113c230254f6be0919311eb2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 05:59:01,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 05:59:01,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 05:59:01,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 05:59:01,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 05:59:01,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 05:59:01,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 05:59:01,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 05:59:01,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 05:59:01,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 05:59:01,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 05:59:01,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 05:59:01,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 05:59:01,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 05:59:01,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 05:59:01,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 05:59:01,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 05:59:01,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 05:59:01,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 05:59:01,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 05:59:01,307 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 05:59:01,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 05:59:01,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 05:59:01,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 05:59:01,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 05:59:01,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 05:59:01,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 05:59:01,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 05:59:01,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 05:59:01,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 05:59:01,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 05:59:01,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 05:59:01,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 05:59:01,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 05:59:01,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 05:59:01,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 05:59:01,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 05:59:01,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 05:59:01,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 05:59:01,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 05:59:01,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 05:59:01,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 05:59:01,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-20 05:59:01,361 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 05:59:01,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 05:59:01,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 05:59:01,362 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 05:59:01,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 05:59:01,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 05:59:01,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 05:59:01,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 05:59:01,364 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 05:59:01,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 05:59:01,365 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 05:59:01,365 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-20 05:59:01,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 05:59:01,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 05:59:01,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 05:59:01,366 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-20 05:59:01,366 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-20 05:59:01,366 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-20 05:59:01,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 05:59:01,368 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 05:59:01,368 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 05:59:01,368 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 05:59:01,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 05:59:01,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 05:59:01,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 05:59:01,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 05:59:01,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 05:59:01,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 05:59:01,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 05:59:01,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 05:59:01,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f002fb5adc832f6023a0c06b1c5ecdb23a860b09113c230254f6be0919311eb2 [2022-07-20 05:59:01,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 05:59:01,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 05:59:01,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 05:59:01,678 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 05:59:01,679 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 05:59:01,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i [2022-07-20 05:59:01,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89643b1c8/ba25d192fa964175bfcd2a076b53961f/FLAGbb32fcc81 [2022-07-20 05:59:02,266 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 05:59:02,272 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i [2022-07-20 05:59:02,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89643b1c8/ba25d192fa964175bfcd2a076b53961f/FLAGbb32fcc81 [2022-07-20 05:59:02,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89643b1c8/ba25d192fa964175bfcd2a076b53961f [2022-07-20 05:59:02,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 05:59:02,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 05:59:02,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 05:59:02,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 05:59:02,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 05:59:02,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:59:02" (1/1) ... [2022-07-20 05:59:02,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229790c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:59:02, skipping insertion in model container [2022-07-20 05:59:02,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:59:02" (1/1) ... [2022-07-20 05:59:02,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 05:59:02,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 05:59:02,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 05:59:02,980 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-07-20 05:59:02,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3713770b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:59:02, skipping insertion in model container [2022-07-20 05:59:02,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 05:59:02,981 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-20 05:59:02,983 INFO L158 Benchmark]: Toolchain (without parser) took 373.34ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 54.2MB in the beginning and 78.3MB in the end (delta: -24.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-20 05:59:02,984 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 88.1MB. Free memory was 44.7MB in the beginning and 44.6MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 05:59:02,984 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.57ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 54.1MB in the beginning and 78.7MB in the end (delta: -24.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-20 05:59:02,986 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 88.1MB. Free memory was 44.7MB in the beginning and 44.6MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 369.57ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 54.1MB in the beginning and 78.7MB in the end (delta: -24.6MB). 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 of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.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 f002fb5adc832f6023a0c06b1c5ecdb23a860b09113c230254f6be0919311eb2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 05:59:04,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 05:59:04,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 05:59:04,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 05:59:04,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 05:59:04,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 05:59:04,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 05:59:04,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 05:59:04,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 05:59:04,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 05:59:04,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 05:59:04,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 05:59:04,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 05:59:04,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 05:59:04,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 05:59:04,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 05:59:04,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 05:59:04,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 05:59:04,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 05:59:04,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 05:59:04,856 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 05:59:04,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 05:59:04,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 05:59:04,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 05:59:04,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 05:59:04,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 05:59:04,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 05:59:04,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 05:59:04,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 05:59:04,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 05:59:04,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 05:59:04,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 05:59:04,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 05:59:04,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 05:59:04,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 05:59:04,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 05:59:04,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 05:59:04,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 05:59:04,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 05:59:04,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 05:59:04,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 05:59:04,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 05:59:04,872 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-20 05:59:04,892 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 05:59:04,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 05:59:04,893 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 05:59:04,893 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 05:59:04,894 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 05:59:04,894 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 05:59:04,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 05:59:04,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 05:59:04,895 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 05:59:04,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 05:59:04,896 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 05:59:04,896 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-20 05:59:04,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 05:59:04,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 05:59:04,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 05:59:04,901 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-20 05:59:04,901 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-20 05:59:04,901 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-20 05:59:04,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 05:59:04,902 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 05:59:04,902 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-20 05:59:04,902 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-20 05:59:04,902 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 05:59:04,903 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 05:59:04,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 05:59:04,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 05:59:04,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 05:59:04,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 05:59:04,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 05:59:04,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 05:59:04,904 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-20 05:59:04,904 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-20 05:59:04,905 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-20 05:59:04,905 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f002fb5adc832f6023a0c06b1c5ecdb23a860b09113c230254f6be0919311eb2 [2022-07-20 05:59:05,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 05:59:05,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 05:59:05,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 05:59:05,256 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 05:59:05,257 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 05:59:05,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i [2022-07-20 05:59:05,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69ac27102/d321de014c604b62b89aab375d70da85/FLAGa27110733 [2022-07-20 05:59:05,877 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 05:59:05,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i [2022-07-20 05:59:05,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69ac27102/d321de014c604b62b89aab375d70da85/FLAGa27110733 [2022-07-20 05:59:06,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69ac27102/d321de014c604b62b89aab375d70da85 [2022-07-20 05:59:06,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 05:59:06,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 05:59:06,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 05:59:06,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 05:59:06,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 05:59:06,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:59:06" (1/1) ... [2022-07-20 05:59:06,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b450db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:59:06, skipping insertion in model container [2022-07-20 05:59:06,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:59:06" (1/1) ... [2022-07-20 05:59:06,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 05:59:06,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 05:59:06,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 05:59:06,603 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-20 05:59:06,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 05:59:06,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 05:59:06,691 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 05:59:06,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 05:59:06,796 INFO L208 MainTranslator]: Completed translation [2022-07-20 05:59:06,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:59:06 WrapperNode [2022-07-20 05:59:06,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 05:59:06,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 05:59:06,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 05:59:06,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 05:59:06,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:59:06" (1/1) ... [2022-07-20 05:59:06,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:59:06" (1/1) ... [2022-07-20 05:59:06,862 INFO L137 Inliner]: procedures = 165, calls = 68, calls flagged for inlining = 22, calls inlined = 8, statements flattened = 46 [2022-07-20 05:59:06,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 05:59:06,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 05:59:06,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 05:59:06,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 05:59:06,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:59:06" (1/1) ... [2022-07-20 05:59:06,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:59:06" (1/1) ... [2022-07-20 05:59:06,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:59:06" (1/1) ... [2022-07-20 05:59:06,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:59:06" (1/1) ... [2022-07-20 05:59:06,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:59:06" (1/1) ... [2022-07-20 05:59:06,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:59:06" (1/1) ... [2022-07-20 05:59:06,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:59:06" (1/1) ... [2022-07-20 05:59:06,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 05:59:06,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 05:59:06,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 05:59:06,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 05:59:06,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:59:06" (1/1) ... [2022-07-20 05:59:06,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 05:59:06,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 05:59:06,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-20 05:59:06,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-20 05:59:07,000 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2022-07-20 05:59:07,000 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2022-07-20 05:59:07,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-20 05:59:07,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-20 05:59:07,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 05:59:07,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 05:59:07,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 05:59:07,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-20 05:59:07,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-20 05:59:07,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 05:59:07,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 05:59:07,184 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 05:59:07,185 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 05:59:07,432 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 05:59:07,437 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 05:59:07,438 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-20 05:59:07,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:59:07 BoogieIcfgContainer [2022-07-20 05:59:07,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 05:59:07,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 05:59:07,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 05:59:07,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 05:59:07,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:59:06" (1/3) ... [2022-07-20 05:59:07,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d72d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:59:07, skipping insertion in model container [2022-07-20 05:59:07,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:59:06" (2/3) ... [2022-07-20 05:59:07,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d72d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:59:07, skipping insertion in model container [2022-07-20 05:59:07,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:59:07" (3/3) ... [2022-07-20 05:59:07,451 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test22_2-1.i [2022-07-20 05:59:07,468 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 05:59:07,469 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-07-20 05:59:07,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 05:59:07,512 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@62e4131, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1acbd762 [2022-07-20 05:59:07,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-07-20 05:59:07,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 25 states have (on average 1.56) internal successors, (39), 35 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 05:59:07,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-20 05:59:07,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:59:07,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:59:07,527 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-07-20 05:59:07,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:59:07,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1450204525, now seen corresponding path program 1 times [2022-07-20 05:59:07,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:59:07,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417537422] [2022-07-20 05:59:07,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:59:07,543 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:59:07,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:59:07,546 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 05:59:07,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-20 05:59:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:59:07,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 05:59:07,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:59:07,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-20 05:59:07,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:59:07,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:59:07,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:59:07,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417537422] [2022-07-20 05:59:07,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417537422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:59:07,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:59:07,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 05:59:07,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313325250] [2022-07-20 05:59:07,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:59:07,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 05:59:07,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:59:07,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 05:59:07,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 05:59:07,804 INFO L87 Difference]: Start difference. First operand has 39 states, 25 states have (on average 1.56) internal successors, (39), 35 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-07-20 05:59:08,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:59:08,056 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2022-07-20 05:59:08,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 05:59:08,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 10 [2022-07-20 05:59:08,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:59:08,066 INFO L225 Difference]: With dead ends: 75 [2022-07-20 05:59:08,066 INFO L226 Difference]: Without dead ends: 67 [2022-07-20 05:59:08,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 05:59:08,070 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 64 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 05:59:08,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 111 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 05:59:08,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-07-20 05:59:08,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 42. [2022-07-20 05:59:08,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.5) internal successors, (42), 37 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 05:59:08,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-07-20 05:59:08,103 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 10 [2022-07-20 05:59:08,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:59:08,103 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-07-20 05:59:08,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-07-20 05:59:08,104 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-07-20 05:59:08,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-20 05:59:08,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:59:08,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:59:08,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-20 05:59:08,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:59:08,312 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-07-20 05:59:08,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:59:08,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1478833676, now seen corresponding path program 1 times [2022-07-20 05:59:08,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:59:08,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037728724] [2022-07-20 05:59:08,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:59:08,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:59:08,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:59:08,315 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 05:59:08,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-20 05:59:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:59:08,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 05:59:08,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:59:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:59:08,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:59:08,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:59:08,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037728724] [2022-07-20 05:59:08,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037728724] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:59:08,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:59:08,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 05:59:08,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775761460] [2022-07-20 05:59:08,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:59:08,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 05:59:08,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:59:08,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 05:59:08,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 05:59:08,433 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-07-20 05:59:08,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:59:08,455 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2022-07-20 05:59:08,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 05:59:08,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 10 [2022-07-20 05:59:08,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:59:08,461 INFO L225 Difference]: With dead ends: 44 [2022-07-20 05:59:08,462 INFO L226 Difference]: Without dead ends: 44 [2022-07-20 05:59:08,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 05:59:08,464 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 3 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 05:59:08,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 155 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 05:59:08,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-20 05:59:08,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-07-20 05:59:08,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 35 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 05:59:08,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2022-07-20 05:59:08,470 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 10 [2022-07-20 05:59:08,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:59:08,471 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2022-07-20 05:59:08,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-07-20 05:59:08,471 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2022-07-20 05:59:08,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-20 05:59:08,472 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:59:08,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:59:08,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-20 05:59:08,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:59:08,682 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-07-20 05:59:08,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:59:08,683 INFO L85 PathProgramCache]: Analyzing trace with hash 2006667364, now seen corresponding path program 1 times [2022-07-20 05:59:08,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:59:08,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377820013] [2022-07-20 05:59:08,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:59:08,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:59:08,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:59:08,685 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 05:59:08,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-20 05:59:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:59:08,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-20 05:59:08,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:59:08,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-20 05:59:08,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:59:08,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:59:08,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:59:08,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377820013] [2022-07-20 05:59:08,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377820013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:59:08,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:59:08,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 05:59:08,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457495737] [2022-07-20 05:59:08,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:59:08,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 05:59:08,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:59:08,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 05:59:08,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-20 05:59:08,851 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-07-20 05:59:09,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:59:09,024 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2022-07-20 05:59:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 05:59:09,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 11 [2022-07-20 05:59:09,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:59:09,026 INFO L225 Difference]: With dead ends: 47 [2022-07-20 05:59:09,026 INFO L226 Difference]: Without dead ends: 47 [2022-07-20 05:59:09,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-20 05:59:09,028 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 41 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 05:59:09,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 117 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 05:59:09,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-07-20 05:59:09,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2022-07-20 05:59:09,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 34 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 05:59:09,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-07-20 05:59:09,033 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 11 [2022-07-20 05:59:09,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:59:09,034 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-07-20 05:59:09,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-07-20 05:59:09,034 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-07-20 05:59:09,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-20 05:59:09,035 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:59:09,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:59:09,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-20 05:59:09,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:59:09,244 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-07-20 05:59:09,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:59:09,245 INFO L85 PathProgramCache]: Analyzing trace with hash 2077119379, now seen corresponding path program 1 times [2022-07-20 05:59:09,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:59:09,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994465980] [2022-07-20 05:59:09,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:59:09,246 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:59:09,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:59:09,247 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 05:59:09,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-20 05:59:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:59:09,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 05:59:09,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:59:09,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:59:09,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:59:09,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:59:09,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994465980] [2022-07-20 05:59:09,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994465980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:59:09,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:59:09,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 05:59:09,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010717352] [2022-07-20 05:59:09,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:59:09,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 05:59:09,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:59:09,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 05:59:09,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 05:59:09,321 INFO L87 Difference]: Start difference. First operand 39 states and 43 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) [2022-07-20 05:59:09,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:59:09,344 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2022-07-20 05:59:09,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 05:59:09,345 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 [2022-07-20 05:59:09,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:59:09,347 INFO L225 Difference]: With dead ends: 43 [2022-07-20 05:59:09,348 INFO L226 Difference]: Without dead ends: 43 [2022-07-20 05:59:09,349 INFO L412 NwaCegarLoop]: 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 [2022-07-20 05:59:09,352 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 19 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 05:59:09,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 129 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 05:59:09,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-07-20 05:59:09,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2022-07-20 05:59:09,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 34 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 05:59:09,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-07-20 05:59:09,369 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 12 [2022-07-20 05:59:09,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:59:09,369 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-07-20 05:59:09,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-07-20 05:59:09,370 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-07-20 05:59:09,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-20 05:59:09,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:59:09,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:59:09,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-20 05:59:09,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:59:09,588 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-07-20 05:59:09,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:59:09,589 INFO L85 PathProgramCache]: Analyzing trace with hash -475037582, now seen corresponding path program 1 times [2022-07-20 05:59:09,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:59:09,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148878644] [2022-07-20 05:59:09,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:59:09,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:59:09,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:59:09,591 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 05:59:09,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-20 05:59:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:59:09,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 05:59:09,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:59:09,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:59:09,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:59:09,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:59:09,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148878644] [2022-07-20 05:59:09,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148878644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:59:09,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:59:09,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 05:59:09,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516993915] [2022-07-20 05:59:09,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:59:09,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 05:59:09,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:59:09,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 05:59:09,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 05:59:09,705 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) 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) [2022-07-20 05:59:09,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:59:09,784 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2022-07-20 05:59:09,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 05:59:09,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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 [2022-07-20 05:59:09,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:59:09,786 INFO L225 Difference]: With dead ends: 42 [2022-07-20 05:59:09,786 INFO L226 Difference]: Without dead ends: 35 [2022-07-20 05:59:09,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 05:59:09,787 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 05:59:09,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 75 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 05:59:09,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-20 05:59:09,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-07-20 05:59:09,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.375) internal successors, (33), 31 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 05:59:09,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-07-20 05:59:09,791 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 12 [2022-07-20 05:59:09,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:59:09,791 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-07-20 05:59:09,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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) [2022-07-20 05:59:09,792 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-07-20 05:59:09,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-20 05:59:09,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:59:09,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:59:09,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-20 05:59:10,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:59:10,002 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-07-20 05:59:10,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:59:10,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1119696155, now seen corresponding path program 1 times [2022-07-20 05:59:10,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:59:10,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862688515] [2022-07-20 05:59:10,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:59:10,003 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:59:10,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:59:10,005 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 05:59:10,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-20 05:59:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:59:10,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 05:59:10,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:59:10,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:59:10,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:59:10,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:59:10,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862688515] [2022-07-20 05:59:10,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862688515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:59:10,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:59:10,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 05:59:10,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277376330] [2022-07-20 05:59:10,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:59:10,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 05:59:10,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:59:10,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 05:59:10,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 05:59:10,093 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-07-20 05:59:10,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:59:10,108 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2022-07-20 05:59:10,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 05:59:10,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 16 [2022-07-20 05:59:10,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:59:10,109 INFO L225 Difference]: With dead ends: 36 [2022-07-20 05:59:10,109 INFO L226 Difference]: Without dead ends: 36 [2022-07-20 05:59:10,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 05:59:10,110 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 17 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 05:59:10,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 83 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 05:59:10,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-20 05:59:10,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-07-20 05:59:10,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.36) internal successors, (34), 32 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 05:59:10,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2022-07-20 05:59:10,113 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 16 [2022-07-20 05:59:10,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:59:10,113 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2022-07-20 05:59:10,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-07-20 05:59:10,114 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2022-07-20 05:59:10,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-20 05:59:10,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:59:10,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:59:10,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-20 05:59:10,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:59:10,322 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-07-20 05:59:10,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:59:10,323 INFO L85 PathProgramCache]: Analyzing trace with hash 291583310, now seen corresponding path program 1 times [2022-07-20 05:59:10,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:59:10,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974156613] [2022-07-20 05:59:10,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:59:10,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:59:10,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:59:10,325 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) [2022-07-20 05:59:10,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-20 05:59:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:59:10,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 05:59:10,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:59:10,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:59:10,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 05:59:10,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:59:10,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:59:10,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974156613] [2022-07-20 05:59:10,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974156613] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 05:59:10,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 05:59:10,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-20 05:59:10,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847464020] [2022-07-20 05:59:10,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 05:59:10,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 05:59:10,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:59:10,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 05:59:10,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-20 05:59:10,502 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2022-07-20 05:59:10,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:59:10,565 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2022-07-20 05:59:10,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 05:59:10,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 [2022-07-20 05:59:10,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:59:10,567 INFO L225 Difference]: With dead ends: 39 [2022-07-20 05:59:10,570 INFO L226 Difference]: Without dead ends: 39 [2022-07-20 05:59:10,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-07-20 05:59:10,570 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 34 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 05:59:10,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 162 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 05:59:10,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-20 05:59:10,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-07-20 05:59:10,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 35 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 05:59:10,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2022-07-20 05:59:10,573 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 17 [2022-07-20 05:59:10,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:59:10,573 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2022-07-20 05:59:10,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2022-07-20 05:59:10,573 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2022-07-20 05:59:10,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-20 05:59:10,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:59:10,574 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:59:10,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-20 05:59:10,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:59:10,775 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-07-20 05:59:10,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:59:10,775 INFO L85 PathProgramCache]: Analyzing trace with hash -875222565, now seen corresponding path program 2 times [2022-07-20 05:59:10,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:59:10,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815969877] [2022-07-20 05:59:10,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 05:59:10,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:59:10,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:59:10,777 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) [2022-07-20 05:59:10,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-20 05:59:10,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 05:59:10,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 05:59:10,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-20 05:59:10,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:59:10,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-20 05:59:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-20 05:59:10,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:59:10,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:59:10,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815969877] [2022-07-20 05:59:10,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815969877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:59:10,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:59:10,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 05:59:10,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419551600] [2022-07-20 05:59:10,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:59:10,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 05:59:10,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:59:10,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 05:59:10,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-20 05:59:10,926 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2022-07-20 05:59:11,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:59:11,112 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2022-07-20 05:59:11,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 05:59:11,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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 20 [2022-07-20 05:59:11,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:59:11,113 INFO L225 Difference]: With dead ends: 49 [2022-07-20 05:59:11,113 INFO L226 Difference]: Without dead ends: 49 [2022-07-20 05:59:11,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-20 05:59:11,114 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 43 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 05:59:11,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 104 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 05:59:11,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-07-20 05:59:11,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2022-07-20 05:59:11,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 34 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 05:59:11,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2022-07-20 05:59:11,117 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 20 [2022-07-20 05:59:11,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:59:11,117 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2022-07-20 05:59:11,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2022-07-20 05:59:11,117 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2022-07-20 05:59:11,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-20 05:59:11,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:59:11,118 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:59:11,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-20 05:59:11,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:59:11,319 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-07-20 05:59:11,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:59:11,319 INFO L85 PathProgramCache]: Analyzing trace with hash -875222564, now seen corresponding path program 1 times [2022-07-20 05:59:11,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:59:11,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481019509] [2022-07-20 05:59:11,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:59:11,320 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:59:11,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:59:11,322 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 05:59:11,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-20 05:59:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:59:11,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 05:59:11,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:59:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:59:11,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 05:59:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:59:11,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:59:11,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481019509] [2022-07-20 05:59:11,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481019509] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 05:59:11,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 05:59:11,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-20 05:59:11,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119581047] [2022-07-20 05:59:11,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 05:59:11,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-20 05:59:11,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:59:11,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-20 05:59:11,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-20 05:59:11,681 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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) [2022-07-20 05:59:11,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:59:11,921 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2022-07-20 05:59:11,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-20 05:59:11,922 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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 20 [2022-07-20 05:59:11,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:59:11,922 INFO L225 Difference]: With dead ends: 44 [2022-07-20 05:59:11,922 INFO L226 Difference]: Without dead ends: 44 [2022-07-20 05:59:11,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2022-07-20 05:59:11,923 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 32 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 05:59:11,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 205 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 05:59:11,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-20 05:59:11,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-07-20 05:59:11,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 40 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 05:59:11,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2022-07-20 05:59:11,926 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 20 [2022-07-20 05:59:11,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:59:11,927 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2022-07-20 05:59:11,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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) [2022-07-20 05:59:11,927 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2022-07-20 05:59:11,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-20 05:59:11,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:59:11,928 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:59:11,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-20 05:59:12,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:59:12,138 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-07-20 05:59:12,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:59:12,138 INFO L85 PathProgramCache]: Analyzing trace with hash -215456516, now seen corresponding path program 2 times [2022-07-20 05:59:12,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:59:12,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237287539] [2022-07-20 05:59:12,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 05:59:12,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:59:12,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:59:12,140 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 05:59:12,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-20 05:59:12,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 05:59:12,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 05:59:12,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-20 05:59:12,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:59:12,224 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-20 05:59:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-20 05:59:12,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:59:12,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:59:12,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237287539] [2022-07-20 05:59:12,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237287539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:59:12,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:59:12,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 05:59:12,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733710714] [2022-07-20 05:59:12,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:59:12,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 05:59:12,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:59:12,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 05:59:12,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-20 05:59:12,387 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 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) [2022-07-20 05:59:12,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:59:12,606 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2022-07-20 05:59:12,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 05:59:12,607 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 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 26 [2022-07-20 05:59:12,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:59:12,608 INFO L225 Difference]: With dead ends: 54 [2022-07-20 05:59:12,608 INFO L226 Difference]: Without dead ends: 54 [2022-07-20 05:59:12,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-20 05:59:12,609 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 41 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 05:59:12,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 148 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 05:59:12,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-07-20 05:59:12,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 43. [2022-07-20 05:59:12,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 39 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 05:59:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2022-07-20 05:59:12,612 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 26 [2022-07-20 05:59:12,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:59:12,612 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2022-07-20 05:59:12,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 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) [2022-07-20 05:59:12,613 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2022-07-20 05:59:12,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-20 05:59:12,613 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:59:12,614 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:59:12,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-20 05:59:12,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:59:12,823 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-07-20 05:59:12,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:59:12,823 INFO L85 PathProgramCache]: Analyzing trace with hash -896789733, now seen corresponding path program 1 times [2022-07-20 05:59:12,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:59:12,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141520235] [2022-07-20 05:59:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:59:12,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:59:12,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:59:12,825 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 05:59:12,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-20 05:59:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:59:12,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-20 05:59:12,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:59:13,110 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:59:13,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 05:59:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:59:13,553 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:59:13,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141520235] [2022-07-20 05:59:13,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141520235] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 05:59:13,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 05:59:13,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-20 05:59:13,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993660299] [2022-07-20 05:59:13,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 05:59:13,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-20 05:59:13,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:59:13,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-20 05:59:13,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2022-07-20 05:59:13,555 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 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) [2022-07-20 05:59:13,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:59:13,950 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2022-07-20 05:59:13,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-20 05:59:13,950 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 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 28 [2022-07-20 05:59:13,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:59:13,951 INFO L225 Difference]: With dead ends: 49 [2022-07-20 05:59:13,951 INFO L226 Difference]: Without dead ends: 49 [2022-07-20 05:59:13,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2022-07-20 05:59:13,952 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 15 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 05:59:13,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 546 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 05:59:13,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-07-20 05:59:13,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-07-20 05:59:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.175) internal successors, (47), 45 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 05:59:13,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2022-07-20 05:59:13,956 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 28 [2022-07-20 05:59:13,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:59:13,956 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2022-07-20 05:59:13,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 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) [2022-07-20 05:59:13,956 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2022-07-20 05:59:13,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-20 05:59:13,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:59:13,957 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:59:13,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-07-20 05:59:14,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:59:14,163 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-07-20 05:59:14,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:59:14,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1023553083, now seen corresponding path program 2 times [2022-07-20 05:59:14,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:59:14,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253044771] [2022-07-20 05:59:14,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 05:59:14,165 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:59:14,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:59:14,166 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 05:59:14,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-20 05:59:14,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 05:59:14,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 05:59:14,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 05:59:14,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:59:14,298 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-20 05:59:14,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:59:14,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:59:14,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253044771] [2022-07-20 05:59:14,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253044771] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:59:14,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:59:14,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 05:59:14,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934007890] [2022-07-20 05:59:14,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:59:14,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 05:59:14,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:59:14,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 05:59:14,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 05:59:14,301 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-07-20 05:59:14,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:59:14,330 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2022-07-20 05:59:14,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 05:59:14,330 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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 34 [2022-07-20 05:59:14,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:59:14,331 INFO L225 Difference]: With dead ends: 49 [2022-07-20 05:59:14,331 INFO L226 Difference]: Without dead ends: 49 [2022-07-20 05:59:14,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 05:59:14,332 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 21 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 05:59:14,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 117 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 05:59:14,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-07-20 05:59:14,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-07-20 05:59:14,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.15) internal successors, (46), 45 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 05:59:14,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2022-07-20 05:59:14,335 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 34 [2022-07-20 05:59:14,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:59:14,336 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2022-07-20 05:59:14,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-07-20 05:59:14,336 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2022-07-20 05:59:14,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-20 05:59:14,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:59:14,337 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:59:14,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-20 05:59:14,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:59:14,546 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-07-20 05:59:14,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:59:14,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1535722837, now seen corresponding path program 1 times [2022-07-20 05:59:14,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:59:14,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503899718] [2022-07-20 05:59:14,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:59:14,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:59:14,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:59:14,549 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 05:59:14,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-20 05:59:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:59:14,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-20 05:59:14,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:59:14,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-20 05:59:14,810 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-20 05:59:14,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:59:14,810 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:59:14,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503899718] [2022-07-20 05:59:14,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [503899718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:59:14,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:59:14,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 05:59:14,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902873493] [2022-07-20 05:59:14,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:59:14,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 05:59:14,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:59:14,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 05:59:14,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-20 05:59:14,812 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 05:59:14,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:59:14,978 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2022-07-20 05:59:14,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 05:59:14,979 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-07-20 05:59:14,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:59:14,980 INFO L225 Difference]: With dead ends: 47 [2022-07-20 05:59:14,980 INFO L226 Difference]: Without dead ends: 47 [2022-07-20 05:59:14,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-20 05:59:14,981 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 38 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 05:59:14,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 68 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 05:59:14,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-07-20 05:59:14,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-07-20 05:59:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 40 states have (on average 1.1) internal successors, (44), 43 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 05:59:14,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2022-07-20 05:59:14,983 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 36 [2022-07-20 05:59:14,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:59:14,984 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2022-07-20 05:59:14,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 05:59:14,984 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2022-07-20 05:59:14,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-20 05:59:14,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:59:14,985 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:59:14,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-20 05:59:15,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:59:15,185 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-07-20 05:59:15,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:59:15,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1535722838, now seen corresponding path program 1 times [2022-07-20 05:59:15,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:59:15,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697224794] [2022-07-20 05:59:15,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:59:15,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:59:15,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:59:15,188 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 05:59:15,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-20 05:59:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:59:15,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-20 05:59:15,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:59:15,345 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-20 05:59:15,549 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-20 05:59:15,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:59:15,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:59:15,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697224794] [2022-07-20 05:59:15,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697224794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:59:15,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:59:15,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 05:59:15,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802975350] [2022-07-20 05:59:15,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:59:15,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-20 05:59:15,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:59:15,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-20 05:59:15,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-20 05:59:15,550 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 05:59:15,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:59:15,743 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2022-07-20 05:59:15,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 05:59:15,744 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-07-20 05:59:15,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:59:15,745 INFO L225 Difference]: With dead ends: 45 [2022-07-20 05:59:15,745 INFO L226 Difference]: Without dead ends: 45 [2022-07-20 05:59:15,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-20 05:59:15,745 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 36 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 05:59:15,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 92 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 05:59:15,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-07-20 05:59:15,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-07-20 05:59:15,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 05:59:15,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2022-07-20 05:59:15,748 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 36 [2022-07-20 05:59:15,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:59:15,749 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2022-07-20 05:59:15,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 05:59:15,749 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2022-07-20 05:59:15,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-20 05:59:15,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:59:15,750 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:59:15,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-20 05:59:15,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:59:15,961 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-07-20 05:59:15,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:59:15,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1485091431, now seen corresponding path program 1 times [2022-07-20 05:59:15,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:59:15,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544775559] [2022-07-20 05:59:15,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:59:15,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:59:15,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:59:15,963 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 05:59:15,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-20 05:59:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:59:16,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-20 05:59:16,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:59:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-20 05:59:16,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:59:16,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:59:16,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544775559] [2022-07-20 05:59:16,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544775559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:59:16,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:59:16,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 05:59:16,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649473493] [2022-07-20 05:59:16,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:59:16,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 05:59:16,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:59:16,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 05:59:16,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-20 05:59:16,176 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-07-20 05:59:16,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:59:16,226 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2022-07-20 05:59:16,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 05:59:16,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 36 [2022-07-20 05:59:16,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:59:16,227 INFO L225 Difference]: With dead ends: 45 [2022-07-20 05:59:16,227 INFO L226 Difference]: Without dead ends: 45 [2022-07-20 05:59:16,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-20 05:59:16,227 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 27 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 05:59:16,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 102 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 05:59:16,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-07-20 05:59:16,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-07-20 05:59:16,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 05:59:16,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2022-07-20 05:59:16,230 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 36 [2022-07-20 05:59:16,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:59:16,230 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2022-07-20 05:59:16,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-07-20 05:59:16,230 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2022-07-20 05:59:16,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-20 05:59:16,231 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:59:16,231 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:59:16,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-20 05:59:16,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:59:16,441 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-07-20 05:59:16,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:59:16,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1270444708, now seen corresponding path program 1 times [2022-07-20 05:59:16,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:59:16,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997587158] [2022-07-20 05:59:16,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:59:16,442 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:59:16,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:59:16,445 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 05:59:16,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-20 05:59:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 05:59:16,694 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-20 05:59:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 05:59:16,885 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-20 05:59:16,886 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-20 05:59:16,887 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (8 of 9 remaining) [2022-07-20 05:59:16,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2022-07-20 05:59:16,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2022-07-20 05:59:16,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2022-07-20 05:59:16,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2022-07-20 05:59:16,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2022-07-20 05:59:16,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2022-07-20 05:59:16,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2022-07-20 05:59:16,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 9 remaining) [2022-07-20 05:59:16,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-20 05:59:17,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:59:17,092 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:59:17,095 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-20 05:59:17,101 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,102 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,102 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,104 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,104 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,104 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,105 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,105 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,105 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,105 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,106 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,106 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,106 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,107 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,107 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,107 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,109 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,109 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,109 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,109 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,110 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,110 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,110 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,110 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,111 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,113 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,114 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,114 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,114 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,114 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,114 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,115 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,115 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,115 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,115 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,115 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,116 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,116 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,116 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,117 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,117 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,117 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,118 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,118 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,118 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,122 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,122 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,122 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,122 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,122 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,123 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,123 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,123 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,124 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,124 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,124 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,124 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,125 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,125 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,125 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,125 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,126 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,126 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,126 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,126 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,126 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,127 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,129 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,130 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,130 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,130 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,130 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,130 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,131 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,131 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,131 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,131 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,131 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,132 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,132 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,132 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,132 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-07-20 05:59:17,132 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,132 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-07-20 05:59:17,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:59:17 BoogieIcfgContainer [2022-07-20 05:59:17,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-20 05:59:17,150 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-20 05:59:17,150 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-20 05:59:17,150 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-20 05:59:17,151 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:59:07" (3/4) ... [2022-07-20 05:59:17,153 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-20 05:59:17,153 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-20 05:59:17,154 INFO L158 Benchmark]: Toolchain (without parser) took 10963.65ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 35.8MB in the beginning and 31.2MB in the end (delta: 4.5MB). Peak memory consumption was 33.4MB. Max. memory is 16.1GB. [2022-07-20 05:59:17,154 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 58.7MB. Free memory was 40.6MB in the beginning and 40.5MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 05:59:17,154 INFO L158 Benchmark]: CACSL2BoogieTranslator took 604.12ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 35.6MB in the beginning and 52.6MB in the end (delta: -17.0MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2022-07-20 05:59:17,155 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.50ms. Allocated memory is still 71.3MB. Free memory was 52.3MB in the beginning and 50.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-20 05:59:17,155 INFO L158 Benchmark]: Boogie Preprocessor took 52.70ms. Allocated memory is still 71.3MB. Free memory was 50.2MB in the beginning and 48.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 05:59:17,156 INFO L158 Benchmark]: RCFGBuilder took 523.95ms. Allocated memory is still 71.3MB. Free memory was 48.4MB in the beginning and 35.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-20 05:59:17,156 INFO L158 Benchmark]: TraceAbstraction took 9704.15ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 34.5MB in the beginning and 31.9MB in the end (delta: 2.6MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2022-07-20 05:59:17,156 INFO L158 Benchmark]: Witness Printer took 3.42ms. Allocated memory is still 86.0MB. Free memory was 31.9MB in the beginning and 31.2MB in the end (delta: 718.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-20 05:59:17,158 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 58.7MB. Free memory was 40.6MB in the beginning and 40.5MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 604.12ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 35.6MB in the beginning and 52.6MB in the end (delta: -17.0MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.50ms. Allocated memory is still 71.3MB. Free memory was 52.3MB in the beginning and 50.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.70ms. Allocated memory is still 71.3MB. Free memory was 50.2MB in the beginning and 48.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 523.95ms. Allocated memory is still 71.3MB. Free memory was 48.4MB in the beginning and 35.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9704.15ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 34.5MB in the beginning and 31.9MB in the end (delta: 2.6MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * Witness Printer took 3.42ms. Allocated memory is still 86.0MB. Free memory was 31.9MB in the beginning and 31.2MB in the end (delta: 718.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled * 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 - UnprovableResult [Line: 761]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 761. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={1:0}] [L762] CALL entry_point() [L758] struct ldv_kobject *kobj; [L759] CALL, EXPR ldv_kobject_create() [L740] struct ldv_kobject *kobj; VAL [ldv_global_msg_list={1:0}] [L741] CALL, EXPR ldv_malloc(sizeof(*kobj)) VAL [\old(size)=16, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L741] RET, EXPR ldv_malloc(sizeof(*kobj)) VAL [ldv_global_msg_list={1:0}, ldv_malloc(sizeof(*kobj))={2:0}] [L741] kobj = ldv_malloc(sizeof(*kobj)) [L742] COND FALSE !(!kobj) [L744] FCALL memset(kobj, 0, sizeof(*kobj)) [L745] CALL ldv_kobject_init(kobj) [L730] COND FALSE !(!kobj) [L733] CALL ldv_kobject_init_internal(kobj) [L723] COND FALSE !(!kobj) [L725] CALL ldv_kref_init(&kobj->kref) [L682] ((&kref->refcount)->counter) = (1) VAL [kref={2:12}, kref={2:12}, ldv_global_msg_list={1:0}] [L725] RET ldv_kref_init(&kobj->kref) [L726] CALL LDV_INIT_LIST_HEAD(&kobj->entry) VAL [ldv_global_msg_list={1:0}, list={2:4}] [L540] list->next = list VAL [ldv_global_msg_list={1:0}, list={2:4}, list={2:4}] [L541] list->prev = list VAL [ldv_global_msg_list={1:0}, list={2:4}, list={2:4}] [L726] RET LDV_INIT_LIST_HEAD(&kobj->entry) VAL [kobj={2:0}, kobj={2:0}, ldv_global_msg_list={1:0}] [L733] RET ldv_kobject_init_internal(kobj) [L745] RET ldv_kobject_init(kobj) [L746] return kobj; VAL [\result={2:0}, kobj={2:0}, ldv_global_msg_list={1:0}] [L759] RET, EXPR ldv_kobject_create() [L759] kobj = ldv_kobject_create() [L762] RET entry_point() - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 39 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 9.6s, OverallIterations: 16, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 445 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 439 mSDsluCounter, 2214 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1762 mSDsCounter, 102 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1092 IncrementalHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 102 mSolverCounterUnsat, 452 mSDtfsCounter, 1092 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 271 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=11, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 63 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 368 NumberOfCodeBlocks, 338 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 371 ConstructedInterpolants, 0 QuantifiedInterpolants, 1482 SizeOfPredicates, 57 NumberOfNonLiveVariables, 1609 ConjunctsInSsa, 145 ConjunctsInUnsatCore, 18 InterpolantComputations, 12 PerfectInterpolantSequences, 609/741 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-20 05:59:17,196 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: UNKNOWN: Overapproximated counterexample