./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 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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 0c4d407f41629f864eb5689f703f67280cbb5237 ..................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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 0c4d407f41629f864eb5689f703f67280cbb5237 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 06:18:34,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:18:34,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:18:34,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:18:34,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:18:34,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:18:34,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:18:34,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:18:34,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:18:34,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:18:34,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:18:34,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:18:34,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:18:34,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:18:34,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:18:34,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:18:34,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:18:34,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:18:34,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:18:34,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:18:34,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:18:34,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:18:34,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:18:34,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:18:34,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:18:34,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:18:34,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:18:34,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:18:34,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:18:34,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:18:34,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:18:34,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:18:34,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:18:34,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:18:34,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:18:34,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:18:34,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:18:34,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:18:34,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:18:34,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:18:34,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:18:34,825 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 06:18:35,042 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:18:35,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:18:35,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:18:35,044 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:18:35,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:18:35,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:18:35,045 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:18:35,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:18:35,046 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:18:35,046 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:18:35,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:18:35,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:18:35,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:18:35,047 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:18:35,047 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:18:35,048 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:18:35,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:18:35,048 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:18:35,048 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:18:35,048 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:18:35,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:18:35,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:18:35,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:18:35,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:18:35,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:18:35,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:18:35,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 06:18:35,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 06:18:35,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:18:35,050 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c4d407f41629f864eb5689f703f67280cbb5237 [2021-08-27 06:18:35,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:18:35,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:18:35,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:18:35,386 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:18:35,386 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:18:35,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i [2021-08-27 06:18:35,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b77f3a2e4/2102f5df95f44eca9427559a961f47f2/FLAGc62e3c6ef [2021-08-27 06:18:35,951 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:18:35,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i [2021-08-27 06:18:35,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b77f3a2e4/2102f5df95f44eca9427559a961f47f2/FLAGc62e3c6ef [2021-08-27 06:18:36,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b77f3a2e4/2102f5df95f44eca9427559a961f47f2 [2021-08-27 06:18:36,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:18:36,298 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:18:36,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:18:36,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:18:36,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:18:36,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:18:36" (1/1) ... [2021-08-27 06:18:36,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18ab3189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:18:36, skipping insertion in model container [2021-08-27 06:18:36,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:18:36" (1/1) ... [2021-08-27 06:18:36,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:18:36,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:18:36,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:18:36,739 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-08-27 06:18:36,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@44ef2f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:18:36, skipping insertion in model container [2021-08-27 06:18:36,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:18:36,741 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-27 06:18:36,743 INFO L168 Benchmark]: Toolchain (without parser) took 443.33 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.0 MB in the beginning and 41.4 MB in the end (delta: -16.4 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. [2021-08-27 06:18:36,744 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 50.3 MB. Free memory is still 32.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:18:36,745 INFO L168 Benchmark]: CACSL2BoogieTranslator took 440.74 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.8 MB in the beginning and 41.4 MB in the end (delta: -16.6 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. [2021-08-27 06:18:36,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 50.3 MB. Free memory is still 32.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 440.74 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.8 MB in the beginning and 41.4 MB in the end (delta: -16.6 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 06:18:38,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:18:38,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:18:38,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:18:38,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:18:38,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:18:38,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:18:38,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:18:38,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:18:38,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:18:38,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:18:38,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:18:38,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:18:38,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:18:38,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:18:38,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:18:38,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:18:38,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:18:38,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:18:38,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:18:38,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:18:38,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:18:38,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:18:38,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:18:38,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:18:38,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:18:38,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:18:38,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:18:38,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:18:38,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:18:38,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:18:38,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:18:38,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:18:38,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:18:38,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:18:38,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:18:38,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:18:38,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:18:38,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:18:38,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:18:38,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:18:38,460 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 06:18:38,495 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:18:38,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:18:38,497 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:18:38,497 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:18:38,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:18:38,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:18:38,499 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:18:38,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:18:38,499 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:18:38,499 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:18:38,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:18:38,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:18:38,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:18:38,501 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:18:38,501 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:18:38,501 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:18:38,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:18:38,502 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:18:38,502 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 06:18:38,502 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 06:18:38,502 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:18:38,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:18:38,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:18:38,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:18:38,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:18:38,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:18:38,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:18:38,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:18:38,504 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 06:18:38,504 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 06:18:38,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:18:38,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 06:18:38,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c4d407f41629f864eb5689f703f67280cbb5237 [2021-08-27 06:18:38,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:18:38,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:18:38,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:18:38,830 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:18:38,831 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:18:38,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i [2021-08-27 06:18:38,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b8332bad/f4b29431adfc406aab2f7881d39441e3/FLAG50b9084de [2021-08-27 06:18:39,433 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:18:39,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i [2021-08-27 06:18:39,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b8332bad/f4b29431adfc406aab2f7881d39441e3/FLAG50b9084de [2021-08-27 06:18:39,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b8332bad/f4b29431adfc406aab2f7881d39441e3 [2021-08-27 06:18:39,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:18:39,934 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:18:39,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:18:39,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:18:39,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:18:39,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:18:39" (1/1) ... [2021-08-27 06:18:39,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d9afd7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:18:39, skipping insertion in model container [2021-08-27 06:18:39,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:18:39" (1/1) ... [2021-08-27 06:18:39,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:18:40,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:18:40,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:18:40,412 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-27 06:18:40,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:18:40,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:18:40,499 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 06:18:40,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:18:40,622 INFO L208 MainTranslator]: Completed translation [2021-08-27 06:18:40,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:18:40 WrapperNode [2021-08-27 06:18:40,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:18:40,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 06:18:40,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 06:18:40,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 06:18:40,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:18:40" (1/1) ... [2021-08-27 06:18:40,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:18:40" (1/1) ... [2021-08-27 06:18:40,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:18:40" (1/1) ... [2021-08-27 06:18:40,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:18:40" (1/1) ... [2021-08-27 06:18:40,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:18:40" (1/1) ... [2021-08-27 06:18:40,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:18:40" (1/1) ... [2021-08-27 06:18:40,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:18:40" (1/1) ... [2021-08-27 06:18:40,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 06:18:40,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 06:18:40,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 06:18:40,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 06:18:40,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:18:40" (1/1) ... [2021-08-27 06:18:40,749 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:18:40,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:18:40,770 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 06:18:40,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 06:18:40,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 06:18:40,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 06:18:40,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-08-27 06:18:40,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:18:40,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 06:18:40,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 06:18:40,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 06:18:40,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 06:18:40,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 06:18:40,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-08-27 06:18:40,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-08-27 06:18:40,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-08-27 06:18:40,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-08-27 06:18:40,813 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-08-27 06:18:40,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-08-27 06:18:40,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-08-27 06:18:40,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-08-27 06:18:40,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-08-27 06:18:40,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-08-27 06:18:40,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-08-27 06:18:40,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-08-27 06:18:40,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-08-27 06:18:40,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-08-27 06:18:40,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-08-27 06:18:40,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-08-27 06:18:40,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-08-27 06:18:40,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-08-27 06:18:40,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-08-27 06:18:40,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-08-27 06:18:40,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-08-27 06:18:40,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-08-27 06:18:40,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-08-27 06:18:40,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-08-27 06:18:40,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-08-27 06:18:40,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-08-27 06:18:40,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-08-27 06:18:40,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-08-27 06:18:40,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-08-27 06:18:40,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-08-27 06:18:40,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-08-27 06:18:40,817 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-08-27 06:18:40,818 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-08-27 06:18:40,818 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-08-27 06:18:40,818 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 06:18:40,818 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-27 06:18:40,819 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-08-27 06:18:40,819 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-08-27 06:18:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 06:18:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 06:18:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 06:18:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 06:18:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 06:18:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 06:18:40,821 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 06:18:40,821 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 06:18:40,821 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 06:18:40,821 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 06:18:40,821 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 06:18:40,821 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 06:18:40,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 06:18:40,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 06:18:40,822 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 06:18:40,823 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 06:18:40,823 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 06:18:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 06:18:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 06:18:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 06:18:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 06:18:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 06:18:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 06:18:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 06:18:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 06:18:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 06:18:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 06:18:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 06:18:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 06:18:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 06:18:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 06:18:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 06:18:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 06:18:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 06:18:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 06:18:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 06:18:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 06:18:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 06:18:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 06:18:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 06:18:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 06:18:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 06:18:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 06:18:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 06:18:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 06:18:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 06:18:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 06:18:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 06:18:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 06:18:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 06:18:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 06:18:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 06:18:40,830 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 06:18:40,830 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 06:18:40,830 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 06:18:40,830 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 06:18:40,830 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 06:18:40,831 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 06:18:40,831 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 06:18:40,831 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 06:18:40,832 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 06:18:40,832 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 06:18:40,832 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 06:18:40,832 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 06:18:40,832 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 06:18:40,832 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 06:18:40,832 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 06:18:40,833 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 06:18:40,833 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 06:18:40,833 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 06:18:40,833 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 06:18:40,833 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 06:18:40,833 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 06:18:40,834 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 06:18:40,834 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 06:18:40,834 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 06:18:40,835 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 06:18:40,837 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 06:18:40,837 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 06:18:40,837 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 06:18:40,837 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 06:18:40,839 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 06:18:40,839 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 06:18:40,839 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 06:18:40,839 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 06:18:40,840 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 06:18:40,845 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 06:18:40,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 06:18:40,845 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 06:18:40,845 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 06:18:40,846 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 06:18:40,846 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 06:18:40,846 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 06:18:40,847 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 06:18:40,847 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 06:18:40,847 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 06:18:40,847 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 06:18:40,847 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 06:18:40,847 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 06:18:40,847 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 06:18:40,847 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 06:18:40,848 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 06:18:40,848 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 06:18:40,848 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 06:18:40,848 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 06:18:40,848 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 06:18:40,848 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 06:18:40,848 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-08-27 06:18:40,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 06:18:40,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-08-27 06:18:40,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-08-27 06:18:40,849 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 06:18:40,849 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 06:18:40,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-08-27 06:18:40,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 06:18:40,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-08-27 06:18:40,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-08-27 06:18:40,850 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-08-27 06:18:40,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 06:18:40,850 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-08-27 06:18:40,850 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-08-27 06:18:40,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-08-27 06:18:40,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 06:18:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-08-27 06:18:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-08-27 06:18:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-08-27 06:18:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-08-27 06:18:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-08-27 06:18:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-08-27 06:18:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 06:18:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-08-27 06:18:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-08-27 06:18:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-08-27 06:18:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-08-27 06:18:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-08-27 06:18:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-27 06:18:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-27 06:18:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-08-27 06:18:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-08-27 06:18:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-08-27 06:18:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-08-27 06:18:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-08-27 06:18:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-08-27 06:18:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-08-27 06:18:40,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-08-27 06:18:40,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-08-27 06:18:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-08-27 06:18:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-08-27 06:18:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-08-27 06:18:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-08-27 06:18:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-08-27 06:18:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-27 06:18:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-08-27 06:18:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-08-27 06:18:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-08-27 06:18:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 06:18:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 06:18:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 06:18:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 06:18:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 06:18:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:18:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-08-27 06:18:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-08-27 06:18:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-08-27 06:18:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-08-27 06:18:41,579 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 06:18:41,917 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 06:18:42,204 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 06:18:42,205 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-27 06:18:42,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:18:42 BoogieIcfgContainer [2021-08-27 06:18:42,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 06:18:42,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 06:18:42,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 06:18:42,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 06:18:42,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:18:39" (1/3) ... [2021-08-27 06:18:42,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58991c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:18:42, skipping insertion in model container [2021-08-27 06:18:42,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:18:40" (2/3) ... [2021-08-27 06:18:42,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58991c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:18:42, skipping insertion in model container [2021-08-27 06:18:42,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:18:42" (3/3) ... [2021-08-27 06:18:42,215 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test22_2-1.i [2021-08-27 06:18:42,219 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 06:18:42,219 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-08-27 06:18:42,260 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 06:18:42,265 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 06:18:42,265 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-08-27 06:18:42,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 69 states have internal predecessors, (75), 12 states have call successors, (12), 11 states have call predecessors, (12), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-08-27 06:18:42,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 06:18:42,285 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:18:42,286 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:18:42,286 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_kobject_createErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:18:42,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:18:42,291 INFO L82 PathProgramCache]: Analyzing trace with hash -896940051, now seen corresponding path program 1 times [2021-08-27 06:18:42,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:18:42,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320254945] [2021-08-27 06:18:42,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:18:42,301 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:18:42,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:18:42,303 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:18:42,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-27 06:18:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:18:42,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:18:42,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:18:42,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:18:42,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:42,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:18:42,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:42,892 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:18:42,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320254945] [2021-08-27 06:18:42,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320254945] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:18:42,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:18:42,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-27 06:18:42,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192514196] [2021-08-27 06:18:42,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:18:42,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:18:42,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:18:42,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:18:42,916 INFO L87 Difference]: Start difference. First operand has 92 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 69 states have internal predecessors, (75), 12 states have call successors, (12), 11 states have call predecessors, (12), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:18:43,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:18:43,104 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-08-27 06:18:43,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:18:43,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-08-27 06:18:43,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:18:43,116 INFO L225 Difference]: With dead ends: 74 [2021-08-27 06:18:43,117 INFO L226 Difference]: Without dead ends: 71 [2021-08-27 06:18:43,118 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.5ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:18:43,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-08-27 06:18:43,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2021-08-27 06:18:43,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 46 states have internal predecessors, (50), 11 states have call successors, (11), 10 states have call predecessors, (11), 10 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2021-08-27 06:18:43,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2021-08-27 06:18:43,157 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 17 [2021-08-27 06:18:43,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:18:43,158 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2021-08-27 06:18:43,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:18:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2021-08-27 06:18:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 06:18:43,160 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:18:43,160 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:18:43,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-27 06:18:43,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:18:43,376 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_kobject_createErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:18:43,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:18:43,377 INFO L82 PathProgramCache]: Analyzing trace with hash -896940050, now seen corresponding path program 1 times [2021-08-27 06:18:43,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:18:43,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185070084] [2021-08-27 06:18:43,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:18:43,378 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:18:43,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:18:43,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:18:43,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-27 06:18:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:18:43,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 06:18:43,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:18:43,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:18:43,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:43,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:18:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:44,137 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:18:44,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185070084] [2021-08-27 06:18:44,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185070084] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:18:44,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:18:44,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-08-27 06:18:44,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226753131] [2021-08-27 06:18:44,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 06:18:44,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:18:44,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 06:18:44,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-27 06:18:44,146 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:18:44,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:18:44,493 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2021-08-27 06:18:44,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 06:18:44,494 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2021-08-27 06:18:44,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:18:44,495 INFO L225 Difference]: With dead ends: 70 [2021-08-27 06:18:44,495 INFO L226 Difference]: Without dead ends: 70 [2021-08-27 06:18:44,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 192.0ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-27 06:18:44,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-08-27 06:18:44,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2021-08-27 06:18:44,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 46 states have internal predecessors, (49), 11 states have call successors, (11), 10 states have call predecessors, (11), 10 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2021-08-27 06:18:44,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2021-08-27 06:18:44,503 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 17 [2021-08-27 06:18:44,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:18:44,503 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2021-08-27 06:18:44,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:18:44,503 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2021-08-27 06:18:44,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 06:18:44,504 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:18:44,504 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:18:44,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-27 06:18:44,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:18:44,714 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_kobject_createErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:18:44,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:18:44,715 INFO L82 PathProgramCache]: Analyzing trace with hash -868310900, now seen corresponding path program 1 times [2021-08-27 06:18:44,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:18:44,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031826597] [2021-08-27 06:18:44,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:18:44,715 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:18:44,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:18:44,719 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:18:44,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-27 06:18:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:18:44,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 06:18:44,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:18:45,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:45,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:18:45,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:45,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:18:45,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031826597] [2021-08-27 06:18:45,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031826597] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:18:45,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:18:45,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:18:45,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759710738] [2021-08-27 06:18:45,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:18:45,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:18:45,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:18:45,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:18:45,141 INFO L87 Difference]: Start difference. First operand 65 states and 71 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, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:18:45,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:18:45,162 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2021-08-27 06:18:45,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:18:45,163 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, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-08-27 06:18:45,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:18:45,168 INFO L225 Difference]: With dead ends: 64 [2021-08-27 06:18:45,168 INFO L226 Difference]: Without dead ends: 64 [2021-08-27 06:18:45,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.1ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:18:45,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-27 06:18:45,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2021-08-27 06:18:45,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 43 states have internal predecessors, (46), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2021-08-27 06:18:45,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-08-27 06:18:45,187 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 17 [2021-08-27 06:18:45,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:18:45,187 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-08-27 06:18:45,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:18:45,189 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-08-27 06:18:45,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 06:18:45,191 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:18:45,191 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:18:45,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-27 06:18:45,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:18:45,392 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:18:45,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:18:45,393 INFO L82 PathProgramCache]: Analyzing trace with hash 2008128002, now seen corresponding path program 1 times [2021-08-27 06:18:45,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:18:45,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813910234] [2021-08-27 06:18:45,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:18:45,393 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:18:45,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:18:45,394 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:18:45,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-27 06:18:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:18:45,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:18:45,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:18:45,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:45,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:18:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:45,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:18:45,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813910234] [2021-08-27 06:18:45,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813910234] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:18:45,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:18:45,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:18:45,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782367278] [2021-08-27 06:18:45,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:18:45,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:18:45,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:18:45,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:18:45,959 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-27 06:18:45,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:18:45,986 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2021-08-27 06:18:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:18:45,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 22 [2021-08-27 06:18:45,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:18:45,989 INFO L225 Difference]: With dead ends: 64 [2021-08-27 06:18:45,989 INFO L226 Difference]: Without dead ends: 64 [2021-08-27 06:18:45,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.2ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:18:45,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-27 06:18:46,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2021-08-27 06:18:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 43 states have internal predecessors, (45), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2021-08-27 06:18:46,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2021-08-27 06:18:46,008 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 22 [2021-08-27 06:18:46,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:18:46,008 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2021-08-27 06:18:46,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-27 06:18:46,008 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2021-08-27 06:18:46,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 06:18:46,009 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:18:46,009 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:18:46,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-27 06:18:46,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:18:46,224 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:18:46,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:18:46,224 INFO L82 PathProgramCache]: Analyzing trace with hash 211176643, now seen corresponding path program 1 times [2021-08-27 06:18:46,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:18:46,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920511868] [2021-08-27 06:18:46,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:18:46,225 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:18:46,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:18:46,226 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:18:46,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-27 06:18:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:18:46,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 06:18:46,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:18:46,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:46,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:18:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:46,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:18:46,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920511868] [2021-08-27 06:18:46,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920511868] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:18:46,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:18:46,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 06:18:46,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306140546] [2021-08-27 06:18:46,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 06:18:46,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:18:46,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 06:18:46,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:18:46,700 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:18:46,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:18:46,789 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2021-08-27 06:18:46,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 06:18:46,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2021-08-27 06:18:46,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:18:46,791 INFO L225 Difference]: With dead ends: 68 [2021-08-27 06:18:46,791 INFO L226 Difference]: Without dead ends: 58 [2021-08-27 06:18:46,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:18:46,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-08-27 06:18:46,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-08-27 06:18:46,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 32 states have (on average 1.28125) internal successors, (41), 40 states have internal predecessors, (41), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 06:18:46,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-08-27 06:18:46,794 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 22 [2021-08-27 06:18:46,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:18:46,794 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-08-27 06:18:46,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:18:46,795 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-08-27 06:18:46,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-27 06:18:46,795 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:18:46,795 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-08-27 06:18:46,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-08-27 06:18:47,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:18:47,005 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_kref_initErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:18:47,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:18:47,006 INFO L82 PathProgramCache]: Analyzing trace with hash -45428445, now seen corresponding path program 1 times [2021-08-27 06:18:47,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:18:47,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635127365] [2021-08-27 06:18:47,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:18:47,006 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:18:47,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:18:47,007 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:18:47,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-27 06:18:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:18:47,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 06:18:47,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:18:47,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:47,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:18:47,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:47,441 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:18:47,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635127365] [2021-08-27 06:18:47,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635127365] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:18:47,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:18:47,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-08-27 06:18:47,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202427880] [2021-08-27 06:18:47,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 06:18:47,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:18:47,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 06:18:47,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:18:47,443 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-27 06:18:47,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:18:47,472 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2021-08-27 06:18:47,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 06:18:47,473 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2021-08-27 06:18:47,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:18:47,474 INFO L225 Difference]: With dead ends: 64 [2021-08-27 06:18:47,474 INFO L226 Difference]: Without dead ends: 60 [2021-08-27 06:18:47,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.4ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-08-27 06:18:47,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-08-27 06:18:47,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-08-27 06:18:47,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 42 states have internal predecessors, (43), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 06:18:47,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-08-27 06:18:47,477 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 32 [2021-08-27 06:18:47,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:18:47,478 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-08-27 06:18:47,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-27 06:18:47,478 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-08-27 06:18:47,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-27 06:18:47,479 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:18:47,479 INFO L512 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1] [2021-08-27 06:18:47,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-27 06:18:47,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:18:47,691 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_kref_initErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:18:47,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:18:47,691 INFO L82 PathProgramCache]: Analyzing trace with hash -792080061, now seen corresponding path program 1 times [2021-08-27 06:18:47,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:18:47,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053252754] [2021-08-27 06:18:47,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:18:47,692 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:18:47,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:18:47,693 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:18:47,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-27 06:18:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:18:47,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 06:18:47,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:18:48,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:48,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:18:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:48,265 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:18:48,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053252754] [2021-08-27 06:18:48,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053252754] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:18:48,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:18:48,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-08-27 06:18:48,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280966797] [2021-08-27 06:18:48,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 06:18:48,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:18:48,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 06:18:48,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-27 06:18:48,269 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-27 06:18:48,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:18:48,414 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-08-27 06:18:48,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 06:18:48,415 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2021-08-27 06:18:48,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:18:48,416 INFO L225 Difference]: With dead ends: 68 [2021-08-27 06:18:48,416 INFO L226 Difference]: Without dead ends: 64 [2021-08-27 06:18:48,416 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 146.0ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-08-27 06:18:48,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-27 06:18:48,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-08-27 06:18:48,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 38 states have (on average 1.236842105263158) internal successors, (47), 46 states have internal predecessors, (47), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 06:18:48,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2021-08-27 06:18:48,419 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 34 [2021-08-27 06:18:48,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:18:48,420 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2021-08-27 06:18:48,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-27 06:18:48,420 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2021-08-27 06:18:48,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-27 06:18:48,421 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:18:48,421 INFO L512 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1] [2021-08-27 06:18:48,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-27 06:18:48,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:18:48,633 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_kref_initErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:18:48,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:18:48,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1102366333, now seen corresponding path program 2 times [2021-08-27 06:18:48,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:18:48,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91566457] [2021-08-27 06:18:48,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 06:18:48,635 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:18:48,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:18:48,635 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:18:48,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-27 06:18:48,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 06:18:48,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:18:48,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 06:18:48,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:18:48,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:18:49,215 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-08-27 06:18:49,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:18:49,446 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-08-27 06:18:49,447 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:18:49,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91566457] [2021-08-27 06:18:49,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91566457] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:18:49,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:18:49,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 11 [2021-08-27 06:18:49,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605061040] [2021-08-27 06:18:49,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 06:18:49,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:18:49,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 06:18:49,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-08-27 06:18:49,449 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:18:49,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:18:49,837 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2021-08-27 06:18:49,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 06:18:49,838 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2021-08-27 06:18:49,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:18:49,839 INFO L225 Difference]: With dead ends: 63 [2021-08-27 06:18:49,839 INFO L226 Difference]: Without dead ends: 63 [2021-08-27 06:18:49,839 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 10 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 216.6ms TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-08-27 06:18:49,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-08-27 06:18:49,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-08-27 06:18:49,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 45 states have internal predecessors, (46), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 06:18:49,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2021-08-27 06:18:49,842 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 38 [2021-08-27 06:18:49,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:18:49,843 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2021-08-27 06:18:49,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:18:49,843 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2021-08-27 06:18:49,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-27 06:18:49,843 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:18:49,844 INFO L512 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1] [2021-08-27 06:18:49,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-08-27 06:18:50,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:18:50,053 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_kref_initErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:18:50,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:18:50,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1102366332, now seen corresponding path program 1 times [2021-08-27 06:18:50,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:18:50,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332583068] [2021-08-27 06:18:50,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:18:50,055 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:18:50,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:18:50,056 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) [2021-08-27 06:18:50,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-27 06:18:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:18:50,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 06:18:50,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:18:50,532 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:50,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:18:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:50,972 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:18:50,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332583068] [2021-08-27 06:18:50,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332583068] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:18:50,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:18:50,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-08-27 06:18:50,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072354316] [2021-08-27 06:18:50,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-27 06:18:50,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:18:50,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-27 06:18:50,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-08-27 06:18:50,974 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-27 06:18:51,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:18:51,544 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2021-08-27 06:18:51,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-27 06:18:51,546 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2021-08-27 06:18:51,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:18:51,547 INFO L225 Difference]: With dead ends: 75 [2021-08-27 06:18:51,547 INFO L226 Difference]: Without dead ends: 71 [2021-08-27 06:18:51,548 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 640.5ms TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2021-08-27 06:18:51,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-08-27 06:18:51,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-08-27 06:18:51,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 46 states have (on average 1.173913043478261) internal successors, (54), 53 states have internal predecessors, (54), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 06:18:51,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2021-08-27 06:18:51,552 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 38 [2021-08-27 06:18:51,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:18:51,552 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2021-08-27 06:18:51,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-27 06:18:51,553 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2021-08-27 06:18:51,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-27 06:18:51,554 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:18:51,554 INFO L512 BasicCegarLoop]: trace histogram [14, 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, 1, 1, 1, 1] [2021-08-27 06:18:51,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-27 06:18:51,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:18:51,757 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_kref_initErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:18:51,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:18:51,757 INFO L82 PathProgramCache]: Analyzing trace with hash 2064886276, now seen corresponding path program 2 times [2021-08-27 06:18:51,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:18:51,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007702766] [2021-08-27 06:18:51,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 06:18:51,758 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:18:51,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:18:51,759 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) [2021-08-27 06:18:51,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-27 06:18:52,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 06:18:52,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:18:52,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-27 06:18:52,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:18:52,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:18:52,545 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-08-27 06:18:52,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:18:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-08-27 06:18:53,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:18:53,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007702766] [2021-08-27 06:18:53,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007702766] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:18:53,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:18:53,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2021-08-27 06:18:53,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686998838] [2021-08-27 06:18:53,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-27 06:18:53,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:18:53,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-27 06:18:53,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-08-27 06:18:53,431 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 06:18:54,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:18:54,308 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2021-08-27 06:18:54,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 06:18:54,309 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 46 [2021-08-27 06:18:54,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:18:54,310 INFO L225 Difference]: With dead ends: 70 [2021-08-27 06:18:54,310 INFO L226 Difference]: Without dead ends: 70 [2021-08-27 06:18:54,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 826.1ms TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-08-27 06:18:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-08-27 06:18:54,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-08-27 06:18:54,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 52 states have internal predecessors, (53), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 06:18:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2021-08-27 06:18:54,313 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 46 [2021-08-27 06:18:54,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:18:54,313 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2021-08-27 06:18:54,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 06:18:54,314 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2021-08-27 06:18:54,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-27 06:18:54,315 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:18:54,315 INFO L512 BasicCegarLoop]: trace histogram [14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:18:54,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-27 06:18:54,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:18:54,521 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:18:54,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:18:54,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1743926468, now seen corresponding path program 1 times [2021-08-27 06:18:54,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:18:54,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258481367] [2021-08-27 06:18:54,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:18:54,522 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:18:54,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:18:54,523 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) [2021-08-27 06:18:54,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-27 06:18:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:18:54,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-27 06:18:54,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:18:55,179 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:55,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:18:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:56,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:18:56,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258481367] [2021-08-27 06:18:56,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258481367] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:18:56,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:18:56,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-08-27 06:18:56,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546497024] [2021-08-27 06:18:56,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-08-27 06:18:56,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:18:56,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-08-27 06:18:56,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2021-08-27 06:18:56,151 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-27 06:18:56,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:18:56,643 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2021-08-27 06:18:56,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-27 06:18:56,646 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2021-08-27 06:18:56,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:18:56,647 INFO L225 Difference]: With dead ends: 76 [2021-08-27 06:18:56,647 INFO L226 Difference]: Without dead ends: 72 [2021-08-27 06:18:56,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 739.9ms TimeCoverageRelationStatistics Valid=250, Invalid=940, Unknown=0, NotChecked=0, Total=1190 [2021-08-27 06:18:56,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-08-27 06:18:56,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-08-27 06:18:56,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 54 states have internal predecessors, (55), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 06:18:56,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2021-08-27 06:18:56,651 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 51 [2021-08-27 06:18:56,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:18:56,651 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2021-08-27 06:18:56,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-27 06:18:56,652 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2021-08-27 06:18:56,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-27 06:18:56,653 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:18:56,653 INFO L512 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:18:56,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-08-27 06:18:56,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:18:56,863 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:18:56,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:18:56,864 INFO L82 PathProgramCache]: Analyzing trace with hash 845780764, now seen corresponding path program 2 times [2021-08-27 06:18:56,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:18:56,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049814122] [2021-08-27 06:18:56,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 06:18:56,865 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:18:56,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:18:56,866 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) [2021-08-27 06:18:56,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-08-27 06:18:57,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 06:18:57,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:18:57,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 06:18:57,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:18:57,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:18:57,590 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 06:18:57,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:18:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 06:18:57,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:18:57,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049814122] [2021-08-27 06:18:57,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049814122] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:18:57,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:18:57,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 11 [2021-08-27 06:18:57,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271207710] [2021-08-27 06:18:57,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 06:18:57,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:18:57,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 06:18:57,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-08-27 06:18:57,829 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 06:18:58,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:18:58,166 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2021-08-27 06:18:58,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 06:18:58,167 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 53 [2021-08-27 06:18:58,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:18:58,167 INFO L225 Difference]: With dead ends: 70 [2021-08-27 06:18:58,167 INFO L226 Difference]: Without dead ends: 70 [2021-08-27 06:18:58,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 84 SyntacticMatches, 11 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 192.3ms TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-08-27 06:18:58,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-08-27 06:18:58,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-08-27 06:18:58,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 52 states have internal predecessors, (53), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 06:18:58,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2021-08-27 06:18:58,170 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 53 [2021-08-27 06:18:58,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:18:58,170 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2021-08-27 06:18:58,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 06:18:58,170 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2021-08-27 06:18:58,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-27 06:18:58,171 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:18:58,171 INFO L512 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:18:58,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-08-27 06:18:58,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:18:58,377 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:18:58,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:18:58,377 INFO L82 PathProgramCache]: Analyzing trace with hash 845780765, now seen corresponding path program 1 times [2021-08-27 06:18:58,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:18:58,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801643042] [2021-08-27 06:18:58,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:18:58,377 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:18:58,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:18:58,378 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) [2021-08-27 06:18:58,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-08-27 06:18:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:18:58,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-27 06:18:58,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:18:58,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:18:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 06:18:59,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:19:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 06:19:00,143 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:19:00,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801643042] [2021-08-27 06:19:00,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801643042] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:19:00,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:19:00,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2021-08-27 06:19:00,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525251410] [2021-08-27 06:19:00,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-27 06:19:00,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:19:00,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-27 06:19:00,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-08-27 06:19:00,146 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand has 23 states, 22 states have (on average 2.0) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-08-27 06:19:00,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:19:00,979 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2021-08-27 06:19:00,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 06:19:00,980 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) Word has length 53 [2021-08-27 06:19:00,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:19:00,980 INFO L225 Difference]: With dead ends: 68 [2021-08-27 06:19:00,981 INFO L226 Difference]: Without dead ends: 68 [2021-08-27 06:19:00,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 781.2ms TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-08-27 06:19:00,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-08-27 06:19:00,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-08-27 06:19:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.0625) internal successors, (51), 50 states have internal predecessors, (51), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 06:19:00,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2021-08-27 06:19:00,984 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 53 [2021-08-27 06:19:00,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:19:00,984 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2021-08-27 06:19:00,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-08-27 06:19:00,984 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2021-08-27 06:19:00,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-27 06:19:00,985 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:19:00,985 INFO L512 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:19:01,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-08-27 06:19:01,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:19:01,197 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:19:01,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:19:01,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1516815243, now seen corresponding path program 1 times [2021-08-27 06:19:01,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:19:01,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589221007] [2021-08-27 06:19:01,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:19:01,198 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:19:01,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:19:01,198 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) [2021-08-27 06:19:01,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-08-27 06:19:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:19:01,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 06:19:01,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:19:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 06:19:01,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:19:02,050 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 06:19:02,050 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:19:02,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589221007] [2021-08-27 06:19:02,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589221007] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:19:02,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:19:02,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-08-27 06:19:02,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066306474] [2021-08-27 06:19:02,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 06:19:02,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:19:02,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 06:19:02,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-27 06:19:02,052 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-27 06:19:02,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:19:02,090 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2021-08-27 06:19:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 06:19:02,091 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2021-08-27 06:19:02,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:19:02,091 INFO L225 Difference]: With dead ends: 70 [2021-08-27 06:19:02,091 INFO L226 Difference]: Without dead ends: 68 [2021-08-27 06:19:02,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.8ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-27 06:19:02,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-08-27 06:19:02,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-08-27 06:19:02,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 49 states have internal predecessors, (50), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 06:19:02,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2021-08-27 06:19:02,094 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 51 [2021-08-27 06:19:02,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:19:02,094 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2021-08-27 06:19:02,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-27 06:19:02,094 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2021-08-27 06:19:02,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-27 06:19:02,095 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:19:02,095 INFO L512 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:19:02,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-08-27 06:19:02,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:19:02,301 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:19:02,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:19:02,301 INFO L82 PathProgramCache]: Analyzing trace with hash 240473020, now seen corresponding path program 1 times [2021-08-27 06:19:02,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:19:02,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684118533] [2021-08-27 06:19:02,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:19:02,302 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:19:02,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:19:02,303 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) [2021-08-27 06:19:02,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-08-27 06:19:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:19:02,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 06:19:02,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:19:02,982 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 06:19:02,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:19:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 06:19:03,381 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:19:03,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [684118533] [2021-08-27 06:19:03,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [684118533] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:19:03,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:19:03,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 11 [2021-08-27 06:19:03,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776050840] [2021-08-27 06:19:03,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 06:19:03,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:19:03,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 06:19:03,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-08-27 06:19:03,383 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-08-27 06:19:03,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:19:03,475 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2021-08-27 06:19:03,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 06:19:03,475 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 56 [2021-08-27 06:19:03,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:19:03,478 INFO L225 Difference]: With dead ends: 72 [2021-08-27 06:19:03,478 INFO L226 Difference]: Without dead ends: 68 [2021-08-27 06:19:03,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 77.2ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-27 06:19:03,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-08-27 06:19:03,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-08-27 06:19:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 48 states have internal predecessors, (49), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 06:19:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2021-08-27 06:19:03,482 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 56 [2021-08-27 06:19:03,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:19:03,483 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2021-08-27 06:19:03,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-08-27 06:19:03,484 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2021-08-27 06:19:03,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-27 06:19:03,484 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:19:03,485 INFO L512 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:19:03,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-08-27 06:19:03,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:19:03,698 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:19:03,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:19:03,698 INFO L82 PathProgramCache]: Analyzing trace with hash 214334517, now seen corresponding path program 1 times [2021-08-27 06:19:03,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:19:03,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679260353] [2021-08-27 06:19:03,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:19:03,699 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:19:03,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:19:03,700 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) [2021-08-27 06:19:03,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-08-27 06:19:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:19:04,336 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 06:19:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:19:04,500 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-27 06:19:04,501 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 06:19:04,502 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 06:19:04,503 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-08-27 06:19:04,503 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-08-27 06:19:04,503 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-08-27 06:19:04,503 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-08-27 06:19:04,503 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-08-27 06:19:04,504 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-08-27 06:19:04,504 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-08-27 06:19:04,504 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-08-27 06:19:04,504 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-08-27 06:19:04,504 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-08-27 06:19:04,504 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-08-27 06:19:04,504 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-08-27 06:19:04,505 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-08-27 06:19:04,505 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-08-27 06:19:04,505 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-08-27 06:19:04,505 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-08-27 06:19:04,505 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-08-27 06:19:04,505 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-08-27 06:19:04,505 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-08-27 06:19:04,506 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-08-27 06:19:04,506 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-08-27 06:19:04,506 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-08-27 06:19:04,506 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-08-27 06:19:04,506 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-08-27 06:19:04,506 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-08-27 06:19:04,506 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-08-27 06:19:04,507 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-08-27 06:19:04,507 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-08-27 06:19:04,507 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-08-27 06:19:04,507 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-08-27 06:19:04,507 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-08-27 06:19:04,507 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-08-27 06:19:04,507 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-08-27 06:19:04,508 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-08-27 06:19:04,508 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-08-27 06:19:04,508 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-08-27 06:19:04,508 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-08-27 06:19:04,508 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-08-27 06:19:04,508 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-08-27 06:19:04,508 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-08-27 06:19:04,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-08-27 06:19:04,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-08-27 06:19:04,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:19:04,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:19:04,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:19:04,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:19:04,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:19:04,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:19:04,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-08-27 06:19:04,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-08-27 06:19:04,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-08-27 06:19:04,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-08-27 06:19:04,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-08-27 06:19:04,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-08-27 06:19:04,511 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-08-27 06:19:04,511 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-08-27 06:19:04,511 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:19:04,511 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:19:04,511 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:19:04,511 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:19:04,512 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:19:04,512 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:19:04,512 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-08-27 06:19:04,512 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-08-27 06:19:04,512 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-08-27 06:19:04,512 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-08-27 06:19:04,512 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-08-27 06:19:04,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-08-27 06:19:04,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-08-27 06:19:04,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-08-27 06:19:04,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-08-27 06:19:04,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:19:04,734 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 06:19:04,742 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 06:19:04,746 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-27 06:19:04,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:19:04 BoogieIcfgContainer [2021-08-27 06:19:04,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 06:19:04,766 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 06:19:04,766 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 06:19:04,766 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 06:19:04,766 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:18:42" (3/4) ... [2021-08-27 06:19:04,769 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 06:19:04,769 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 06:19:04,771 INFO L168 Benchmark]: Toolchain (without parser) took 24835.78 ms. Allocated memory was 54.5 MB in the beginning and 195.0 MB in the end (delta: 140.5 MB). Free memory was 30.1 MB in the beginning and 107.9 MB in the end (delta: -77.8 MB). Peak memory consumption was 63.8 MB. Max. memory is 16.1 GB. [2021-08-27 06:19:04,771 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 37.0 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:19:04,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.15 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.0 MB in the beginning and 45.8 MB in the end (delta: -15.8 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2021-08-27 06:19:04,772 INFO L168 Benchmark]: Boogie Preprocessor took 116.36 ms. Allocated memory is still 67.1 MB. Free memory was 45.8 MB in the beginning and 41.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 06:19:04,772 INFO L168 Benchmark]: RCFGBuilder took 1467.15 ms. Allocated memory was 67.1 MB in the beginning and 92.3 MB in the end (delta: 25.2 MB). Free memory was 41.0 MB in the beginning and 46.0 MB in the end (delta: -5.0 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. [2021-08-27 06:19:04,773 INFO L168 Benchmark]: TraceAbstraction took 22555.33 ms. Allocated memory was 92.3 MB in the beginning and 195.0 MB in the end (delta: 102.8 MB). Free memory was 46.0 MB in the beginning and 107.9 MB in the end (delta: -61.9 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. [2021-08-27 06:19:04,773 INFO L168 Benchmark]: Witness Printer took 3.69 ms. Allocated memory is still 195.0 MB. Free memory is still 107.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:19:04,774 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 37.0 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 686.15 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.0 MB in the beginning and 45.8 MB in the end (delta: -15.8 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 116.36 ms. Allocated memory is still 67.1 MB. Free memory was 45.8 MB in the beginning and 41.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1467.15 ms. Allocated memory was 67.1 MB in the beginning and 92.3 MB in the end (delta: 25.2 MB). Free memory was 41.0 MB in the beginning and 46.0 MB in the end (delta: -5.0 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22555.33 ms. Allocated memory was 92.3 MB in the beginning and 195.0 MB in the end (delta: 102.8 MB). Free memory was 46.0 MB in the beginning and 107.9 MB in the end (delta: -61.9 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. * Witness Printer took 3.69 ms. Allocated memory is still 195.0 MB. Free memory is still 107.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 [\old(ldv_global_msg_list)=null, \old(ldv_global_msg_list)=null, ldv_global_msg_list={-2147483648:0}] [L762] CALL entry_point() VAL [ldv_global_msg_list={-2147483648:0}] [L758] struct ldv_kobject *kobj; VAL [ldv_global_msg_list={-2147483648:0}] [L759] CALL, EXPR ldv_kobject_create() VAL [ldv_global_msg_list={-2147483648:0}] [L740] struct ldv_kobject *kobj; VAL [ldv_global_msg_list={-2147483648:0}] [L741] CALL, EXPR ldv_malloc(sizeof(*kobj)) VAL [\old(size)=16, ldv_global_msg_list={-2147483648:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L741] RET, EXPR ldv_malloc(sizeof(*kobj)) VAL [ldv_global_msg_list={-2147483648:0}, ldv_malloc(sizeof(*kobj))={1:0}] [L741] kobj = ldv_malloc(sizeof(*kobj)) [L742] COND FALSE !(!kobj) VAL [kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L744] FCALL memset(kobj, 0, sizeof(*kobj)) VAL [kobj={1:0}, ldv_global_msg_list={-2147483648:0}, memset(kobj, 0, sizeof(*kobj))={1:0}] [L745] CALL ldv_kobject_init(kobj) VAL [kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L730] COND FALSE !(!kobj) VAL [kobj={1:0}, kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L733] CALL ldv_kobject_init_internal(kobj) VAL [kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L723] COND FALSE !(!kobj) VAL [kobj={1:0}, kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L725] CALL ldv_kref_init(&kobj->kref) VAL [kref={1:12}, ldv_global_msg_list={-2147483648:0}] [L682] ((&kref->refcount)->counter) = (1) VAL [kref={1:12}, kref={1:12}, ldv_global_msg_list={-2147483648:0}] [L725] RET ldv_kref_init(&kobj->kref) VAL [kobj={1:0}, kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L726] CALL LDV_INIT_LIST_HEAD(&kobj->entry) VAL [ldv_global_msg_list={-2147483648:0}, list={1:4}] [L540] list->next = list VAL [ldv_global_msg_list={-2147483648:0}, list={1:4}, list={1:4}] [L541] list->prev = list VAL [ldv_global_msg_list={-2147483648:0}, list={1:4}, list={1:4}] [L726] RET LDV_INIT_LIST_HEAD(&kobj->entry) VAL [kobj={1:0}, kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L733] RET ldv_kobject_init_internal(kobj) VAL [kobj={1:0}, kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L745] RET ldv_kobject_init(kobj) VAL [kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L746] return kobj; VAL [\result={1:0}, kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L759] RET, EXPR ldv_kobject_create() VAL [ldv_global_msg_list={-2147483648:0}, ldv_kobject_create()={1:0}] [L759] kobj = ldv_kobject_create() [L762] RET entry_point() VAL [ldv_global_msg_list={-2147483648:0}] - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: 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 47 procedures, 330 locations, 71 error locations. Started 1 CEGAR loops. OverallTime: 22474.0ms, OverallIterations: 16, TraceHistogramMax: 16, EmptinessCheckTime: 24.2ms, AutomataDifference: 4561.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 760 SDtfs, 374 SDslu, 4036 SDs, 0 SdLazy, 2295 SolverSat, 162 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2905.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1109 GetRequests, 896 SyntacticMatches, 28 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 3940.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=0, InterpolantAutomatonStates: 144, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 102.6ms AutomataMinimizationTime, 15 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 243.2ms SsaConstructionTime, 636.5ms SatisfiabilityAnalysisTime, 8896.6ms InterpolantComputationTime, 614 NumberOfCodeBlocks, 578 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1064 ConstructedInterpolants, 80 QuantifiedInterpolants, 3835 SizeOfPredicates, 28 NumberOfNonLiveVariables, 2264 ConjunctsInSsa, 146 ConjunctsInUnsatCore, 30 InterpolantComputations, 24 PerfectInterpolantSequences, 1340/1598 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-27 06:19:04,827 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...