./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0775aa74e42740d69127a88680deb3bae2149559 ................................................................................................................................... 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_test4-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0775aa74e42740d69127a88680deb3bae2149559 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 06:23:16,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:23:16,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:23:16,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:23:16,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:23:16,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:23:16,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:23:16,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:23:16,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:23:16,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:23:16,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:23:16,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:23:16,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:23:16,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:23:16,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:23:16,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:23:16,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:23:16,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:23:16,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:23:16,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:23:16,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:23:16,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:23:16,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:23:16,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:23:16,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:23:16,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:23:16,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:23:16,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:23:16,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:23:16,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:23:16,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:23:16,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:23:16,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:23:16,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:23:16,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:23:16,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:23:16,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:23:16,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:23:16,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:23:16,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:23:16,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:23:16,261 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 06:23:16,289 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:23:16,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:23:16,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:23:16,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:23:16,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:23:16,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:23:16,293 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:23:16,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:23:16,293 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:23:16,293 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:23:16,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:23:16,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:23:16,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:23:16,294 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:23:16,295 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:23:16,295 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:23:16,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:23:16,295 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:23:16,295 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:23:16,301 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:23:16,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:23:16,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:23:16,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:23:16,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:23:16,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:23:16,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:23:16,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 06:23:16,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 06:23:16,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:23:16,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0775aa74e42740d69127a88680deb3bae2149559 [2021-08-27 06:23:16,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:23:16,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:23:16,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:23:16,567 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:23:16,567 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:23:16,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2021-08-27 06:23:16,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae02f5008/7b80947756e5481bbf19a8bdd9525c54/FLAGb798ca674 [2021-08-27 06:23:16,980 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:23:16,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2021-08-27 06:23:16,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae02f5008/7b80947756e5481bbf19a8bdd9525c54/FLAGb798ca674 [2021-08-27 06:23:17,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae02f5008/7b80947756e5481bbf19a8bdd9525c54 [2021-08-27 06:23:17,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:23:17,365 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:23:17,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:23:17,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:23:17,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:23:17,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:23:17" (1/1) ... [2021-08-27 06:23:17,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4bd467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:23:17, skipping insertion in model container [2021-08-27 06:23:17,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:23:17" (1/1) ... [2021-08-27 06:23:17,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:23:17,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:23:17,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:23:17,715 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 06:23:17,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@37de55c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:23:17, skipping insertion in model container [2021-08-27 06:23:17,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:23:17,717 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-27 06:23:17,719 INFO L168 Benchmark]: Toolchain (without parser) took 352.61 ms. Allocated memory is still 71.3 MB. Free memory was 54.6 MB in the beginning and 52.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2021-08-27 06:23:17,719 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 71.3 MB. Free memory is still 53.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:23:17,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.15 ms. Allocated memory is still 71.3 MB. Free memory was 54.6 MB in the beginning and 52.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2021-08-27 06:23:17,721 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 71.3 MB. Free memory is still 53.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 349.15 ms. Allocated memory is still 71.3 MB. Free memory was 54.6 MB in the beginning and 52.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 11.7 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 06:23:19,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:23:19,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:23:19,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:23:19,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:23:19,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:23:19,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:23:19,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:23:19,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:23:19,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:23:19,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:23:19,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:23:19,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:23:19,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:23:19,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:23:19,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:23:19,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:23:19,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:23:19,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:23:19,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:23:19,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:23:19,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:23:19,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:23:19,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:23:19,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:23:19,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:23:19,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:23:19,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:23:19,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:23:19,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:23:19,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:23:19,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:23:19,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:23:19,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:23:19,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:23:19,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:23:19,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:23:19,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:23:19,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:23:19,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:23:19,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:23:19,124 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 06:23:19,155 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:23:19,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:23:19,155 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:23:19,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:23:19,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:23:19,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:23:19,157 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:23:19,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:23:19,158 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:23:19,158 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:23:19,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:23:19,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:23:19,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:23:19,159 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:23:19,159 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:23:19,159 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:23:19,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:23:19,160 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:23:19,160 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 06:23:19,160 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 06:23:19,160 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:23:19,160 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:23:19,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:23:19,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:23:19,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:23:19,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:23:19,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:23:19,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:23:19,161 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 06:23:19,162 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 06:23:19,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:23:19,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 06:23:19,162 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0775aa74e42740d69127a88680deb3bae2149559 [2021-08-27 06:23:19,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:23:19,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:23:19,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:23:19,449 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:23:19,450 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:23:19,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2021-08-27 06:23:19,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3743ce8e/40b76dcab385438e8467ed13d8c03424/FLAG6f6ee4a9e [2021-08-27 06:23:19,867 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:23:19,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2021-08-27 06:23:19,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3743ce8e/40b76dcab385438e8467ed13d8c03424/FLAG6f6ee4a9e [2021-08-27 06:23:20,221 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3743ce8e/40b76dcab385438e8467ed13d8c03424 [2021-08-27 06:23:20,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:23:20,224 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:23:20,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:23:20,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:23:20,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:23:20,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:23:20" (1/1) ... [2021-08-27 06:23:20,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1146256f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:23:20, skipping insertion in model container [2021-08-27 06:23:20,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:23:20" (1/1) ... [2021-08-27 06:23:20,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:23:20,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:23:20,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:23:20,539 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-27 06:23:20,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:23:20,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:23:20,571 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 06:23:20,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:23:20,626 INFO L208 MainTranslator]: Completed translation [2021-08-27 06:23:20,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:23:20 WrapperNode [2021-08-27 06:23:20,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:23:20,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 06:23:20,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 06:23:20,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 06:23:20,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:23:20" (1/1) ... [2021-08-27 06:23:20,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:23:20" (1/1) ... [2021-08-27 06:23:20,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:23:20" (1/1) ... [2021-08-27 06:23:20,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:23:20" (1/1) ... [2021-08-27 06:23:20,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:23:20" (1/1) ... [2021-08-27 06:23:20,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:23:20" (1/1) ... [2021-08-27 06:23:20,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:23:20" (1/1) ... [2021-08-27 06:23:20,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 06:23:20,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 06:23:20,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 06:23:20,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 06:23:20,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:23:20" (1/1) ... [2021-08-27 06:23:20,739 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:23:20,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:23:20,753 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 06:23:20,761 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 06:23:20,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 06:23:20,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 06:23:20,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-08-27 06:23:20,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:23:20,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 06:23:20,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 06:23:20,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 06:23:20,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 06:23:20,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 06:23:20,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-08-27 06:23:20,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-08-27 06:23:20,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-08-27 06:23:20,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-08-27 06:23:20,787 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-08-27 06:23:20,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-08-27 06:23:20,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-08-27 06:23:20,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-08-27 06:23:20,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-08-27 06:23:20,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-08-27 06:23:20,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-08-27 06:23:20,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-08-27 06:23:20,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-08-27 06:23:20,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-08-27 06:23:20,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-08-27 06:23:20,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-08-27 06:23:20,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-08-27 06:23:20,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-08-27 06:23:20,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-08-27 06:23:20,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-08-27 06:23:20,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-08-27 06:23:20,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-08-27 06:23:20,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-08-27 06:23:20,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-08-27 06:23:20,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-08-27 06:23:20,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-08-27 06:23:20,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-08-27 06:23:20,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-08-27 06:23:20,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-08-27 06:23:20,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-08-27 06:23:20,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-08-27 06:23:20,790 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-08-27 06:23:20,790 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-08-27 06:23:20,790 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-08-27 06:23:20,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 06:23:20,790 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-27 06:23:20,790 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-08-27 06:23:20,791 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-08-27 06:23:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 06:23:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 06:23:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 06:23:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 06:23:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 06:23:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 06:23:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 06:23:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 06:23:20,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 06:23:20,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 06:23:20,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 06:23:20,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 06:23:20,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 06:23:20,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 06:23:20,792 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 06:23:20,792 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 06:23:20,792 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 06:23:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 06:23:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 06:23:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 06:23:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 06:23:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 06:23:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 06:23:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 06:23:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 06:23:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 06:23:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 06:23:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 06:23:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 06:23:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 06:23:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 06:23:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 06:23:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 06:23:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 06:23:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 06:23:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 06:23:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 06:23:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 06:23:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 06:23:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 06:23:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 06:23:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 06:23:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 06:23:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 06:23:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 06:23:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 06:23:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 06:23:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 06:23:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 06:23:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 06:23:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 06:23:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 06:23:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 06:23:20,797 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 06:23:20,797 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 06:23:20,797 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 06:23:20,797 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 06:23:20,797 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 06:23:20,797 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 06:23:20,797 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 06:23:20,797 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 06:23:20,797 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 06:23:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 06:23:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 06:23:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 06:23:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 06:23:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 06:23:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 06:23:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 06:23:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 06:23:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 06:23:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 06:23:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 06:23:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 06:23:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 06:23:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 06:23:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 06:23:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 06:23:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 06:23:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 06:23:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 06:23:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 06:23:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 06:23:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 06:23:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 06:23:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 06:23:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 06:23:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 06:23:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 06:23:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 06:23:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 06:23:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 06:23:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 06:23:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 06:23:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 06:23:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 06:23:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 06:23:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 06:23:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 06:23:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 06:23:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 06:23:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 06:23:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 06:23:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 06:23:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 06:23:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 06:23:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 06:23:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-08-27 06:23:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 06:23:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-08-27 06:23:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-08-27 06:23:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 06:23:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 06:23:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-08-27 06:23:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 06:23:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-08-27 06:23:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-08-27 06:23:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-08-27 06:23:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 06:23:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-08-27 06:23:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-08-27 06:23:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-08-27 06:23:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 06:23:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-08-27 06:23:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-08-27 06:23:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-08-27 06:23:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-08-27 06:23:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-08-27 06:23:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-08-27 06:23:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 06:23:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-08-27 06:23:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-08-27 06:23:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-08-27 06:23:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-08-27 06:23:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-08-27 06:23:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-27 06:23:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-27 06:23:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-08-27 06:23:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-08-27 06:23:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-08-27 06:23:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-08-27 06:23:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-08-27 06:23:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-08-27 06:23:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-08-27 06:23:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-08-27 06:23:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-08-27 06:23:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-08-27 06:23:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-08-27 06:23:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-08-27 06:23:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-08-27 06:23:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-08-27 06:23:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-27 06:23:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-08-27 06:23:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-08-27 06:23:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-08-27 06:23:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 06:23:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 06:23:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 06:23:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 06:23:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 06:23:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:23:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-08-27 06:23:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-08-27 06:23:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-08-27 06:23:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-08-27 06:23:21,247 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 06:23:21,444 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 06:23:21,630 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 06:23:21,631 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-27 06:23:21,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:23:21 BoogieIcfgContainer [2021-08-27 06:23:21,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 06:23:21,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 06:23:21,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 06:23:21,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 06:23:21,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:23:20" (1/3) ... [2021-08-27 06:23:21,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14fa9754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:23:21, skipping insertion in model container [2021-08-27 06:23:21,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:23:20" (2/3) ... [2021-08-27 06:23:21,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14fa9754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:23:21, skipping insertion in model container [2021-08-27 06:23:21,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:23:21" (3/3) ... [2021-08-27 06:23:21,640 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test4-2.i [2021-08-27 06:23:21,644 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 06:23:21,644 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 77 error locations. [2021-08-27 06:23:21,676 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 06:23:21,681 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 06:23:21,681 INFO L340 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2021-08-27 06:23:21,692 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 57 states have (on average 1.543859649122807) internal successors, (88), 81 states have internal predecessors, (88), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-08-27 06:23:21,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 06:23:21,708 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:21,708 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:23:21,709 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-27 06:23:21,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:21,713 INFO L82 PathProgramCache]: Analyzing trace with hash -2025190552, now seen corresponding path program 1 times [2021-08-27 06:23:21,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:21,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396976473] [2021-08-27 06:23:21,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:23:21,721 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:21,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:21,723 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 06:23:21,728 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 06:23:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:23:21,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:23:21,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:22,003 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 06:23:22,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:23:22,106 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 06:23:22,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:23:22,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396976473] [2021-08-27 06:23:22,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396976473] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:23:22,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:23:22,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:23:22,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663060787] [2021-08-27 06:23:22,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:23:22,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:23:22,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:23:22,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:23:22,130 INFO L87 Difference]: Start difference. First operand has 104 states, 57 states have (on average 1.543859649122807) internal successors, (88), 81 states have internal predecessors, (88), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:23:22,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:23:22,173 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2021-08-27 06:23:22,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:23:22,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 16 [2021-08-27 06:23:22,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:23:22,179 INFO L225 Difference]: With dead ends: 53 [2021-08-27 06:23:22,179 INFO L226 Difference]: Without dead ends: 50 [2021-08-27 06:23:22,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.9ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:23:22,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-27 06:23:22,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2021-08-27 06:23:22,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 25 states have internal predecessors, (27), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-27 06:23:22,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-08-27 06:23:22,208 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 16 [2021-08-27 06:23:22,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:23:22,208 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-08-27 06:23:22,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:23:22,208 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-08-27 06:23:22,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 06:23:22,209 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:22,209 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:23:22,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-27 06:23:22,416 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 06:23:22,416 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-27 06:23:22,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:22,417 INFO L82 PathProgramCache]: Analyzing trace with hash -282380217, now seen corresponding path program 1 times [2021-08-27 06:23:22,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:22,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138822716] [2021-08-27 06:23:22,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:23:22,417 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:22,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:22,419 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 06:23:22,421 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 06:23:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:23:22,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 06:23:22,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:22,638 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 06:23:22,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:23:22,716 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 06:23:22,717 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:23:22,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138822716] [2021-08-27 06:23:22,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138822716] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:23:22,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:23:22,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 06:23:22,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103019189] [2021-08-27 06:23:22,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 06:23:22,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:23:22,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 06:23:22,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:23:22,719 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:23:22,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:23:22,749 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-08-27 06:23:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 06:23:22,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 16 [2021-08-27 06:23:22,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:23:22,750 INFO L225 Difference]: With dead ends: 46 [2021-08-27 06:23:22,750 INFO L226 Difference]: Without dead ends: 43 [2021-08-27 06:23:22,751 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:23:22,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-08-27 06:23:22,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2021-08-27 06:23:22,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 16 states have (on average 1.4375) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-27 06:23:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-08-27 06:23:22,754 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 16 [2021-08-27 06:23:22,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:23:22,754 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-08-27 06:23:22,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:23:22,754 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-08-27 06:23:22,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 06:23:22,755 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:22,755 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:23:22,769 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 06:23:22,963 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 06:23:22,963 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-27 06:23:22,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:22,964 INFO L82 PathProgramCache]: Analyzing trace with hash -2034469669, now seen corresponding path program 1 times [2021-08-27 06:23:22,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:22,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102583046] [2021-08-27 06:23:22,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:23:22,965 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:22,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:22,965 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 06:23:22,967 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 06:23:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:23:23,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:23:23,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:23,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 06:23:23,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:23:23,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 06:23:23,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:23:23,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102583046] [2021-08-27 06:23:23,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102583046] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:23:23,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:23:23,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-27 06:23:23,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709321382] [2021-08-27 06:23:23,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:23:23,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:23:23,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:23:23,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:23:23,229 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:23:23,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:23:23,237 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-08-27 06:23:23,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:23:23,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2021-08-27 06:23:23,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:23:23,238 INFO L225 Difference]: With dead ends: 30 [2021-08-27 06:23:23,238 INFO L226 Difference]: Without dead ends: 30 [2021-08-27 06:23:23,239 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:23:23,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-27 06:23:23,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-27 06:23:23,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 16 states have (on average 1.375) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-27 06:23:23,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-08-27 06:23:23,241 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 20 [2021-08-27 06:23:23,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:23:23,241 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-08-27 06:23:23,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:23:23,241 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-08-27 06:23:23,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-27 06:23:23,242 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:23,242 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:23:23,250 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 06:23:23,448 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 06:23:23,449 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-27 06:23:23,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:23,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1355950095, now seen corresponding path program 1 times [2021-08-27 06:23:23,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:23,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378351881] [2021-08-27 06:23:23,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:23:23,453 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:23,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:23,457 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 06:23:23,458 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 06:23:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:23:23,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 06:23:23,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:23,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:23:23,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:23:24,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 06:23:24,015 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:23:24,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378351881] [2021-08-27 06:23:24,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378351881] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:23:24,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:23:24,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-08-27 06:23:24,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521939877] [2021-08-27 06:23:24,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 06:23:24,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:23:24,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 06:23:24,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-27 06:23:24,017 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 06:23:24,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:23:24,141 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-08-27 06:23:24,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 06:23:24,142 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 21 [2021-08-27 06:23:24,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:23:24,143 INFO L225 Difference]: With dead ends: 50 [2021-08-27 06:23:24,143 INFO L226 Difference]: Without dead ends: 50 [2021-08-27 06:23:24,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 78.6ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-27 06:23:24,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-27 06:23:24,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 29. [2021-08-27 06:23:24,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.3125) internal successors, (21), 20 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-27 06:23:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-08-27 06:23:24,146 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 21 [2021-08-27 06:23:24,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:23:24,146 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-08-27 06:23:24,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 06:23:24,146 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-08-27 06:23:24,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 06:23:24,146 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:24,146 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:23:24,155 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 06:23:24,352 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 06:23:24,353 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-27 06:23:24,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:24,353 INFO L82 PathProgramCache]: Analyzing trace with hash -915219619, now seen corresponding path program 1 times [2021-08-27 06:23:24,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:24,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663789269] [2021-08-27 06:23:24,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:23:24,354 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:24,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:24,355 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 06:23:24,356 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 06:23:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:23:24,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:23:24,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:24,568 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 06:23:24,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 06:23:24,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:23:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 06:23:24,664 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:23:24,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663789269] [2021-08-27 06:23:24,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663789269] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:23:24,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:23:24,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-27 06:23:24,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022327811] [2021-08-27 06:23:24,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:23:24,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:23:24,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:23:24,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:23:24,665 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:23:24,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:23:24,696 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-08-27 06:23:24,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:23:24,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2021-08-27 06:23:24,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:23:24,699 INFO L225 Difference]: With dead ends: 35 [2021-08-27 06:23:24,699 INFO L226 Difference]: Without dead ends: 35 [2021-08-27 06:23:24,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:23:24,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-08-27 06:23:24,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-08-27 06:23:24,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 25 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-27 06:23:24,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-08-27 06:23:24,706 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 22 [2021-08-27 06:23:24,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:23:24,707 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-08-27 06:23:24,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:23:24,707 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-08-27 06:23:24,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 06:23:24,708 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:24,708 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:23:24,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-27 06:23:24,912 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 06:23:24,913 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-27 06:23:24,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:24,913 INFO L82 PathProgramCache]: Analyzing trace with hash -27715938, now seen corresponding path program 1 times [2021-08-27 06:23:24,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:24,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834971694] [2021-08-27 06:23:24,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:23:24,914 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:24,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:24,916 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 06:23:24,917 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 06:23:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:23:25,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:23:25,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:25,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 06:23:25,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:23:25,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 06:23:25,234 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:23:25,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834971694] [2021-08-27 06:23:25,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834971694] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:23:25,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:23:25,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-27 06:23:25,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431878496] [2021-08-27 06:23:25,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:23:25,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:23:25,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:23:25,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:23:25,235 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:23:25,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:23:25,251 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-08-27 06:23:25,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:23:25,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2021-08-27 06:23:25,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:23:25,253 INFO L225 Difference]: With dead ends: 42 [2021-08-27 06:23:25,253 INFO L226 Difference]: Without dead ends: 42 [2021-08-27 06:23:25,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:23:25,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-08-27 06:23:25,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2021-08-27 06:23:25,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-27 06:23:25,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-08-27 06:23:25,255 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 22 [2021-08-27 06:23:25,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:23:25,256 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-08-27 06:23:25,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:23:25,256 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-08-27 06:23:25,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 06:23:25,256 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:25,256 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:23:25,265 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 06:23:25,463 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 06:23:25,463 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-27 06:23:25,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:25,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1692963281, now seen corresponding path program 1 times [2021-08-27 06:23:25,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:25,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323986834] [2021-08-27 06:23:25,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:23:25,464 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:25,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:25,465 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 06:23:25,467 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 06:23:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:23:25,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:23:25,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 06:23:25,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:23:25,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 06:23:25,799 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:23:25,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323986834] [2021-08-27 06:23:25,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323986834] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:23:25,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:23:25,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-27 06:23:25,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240503869] [2021-08-27 06:23:25,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:23:25,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:23:25,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:23:25,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:23:25,801 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:23:25,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:23:25,808 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-08-27 06:23:25,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:23:25,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-08-27 06:23:25,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:23:25,809 INFO L225 Difference]: With dead ends: 27 [2021-08-27 06:23:25,809 INFO L226 Difference]: Without dead ends: 27 [2021-08-27 06:23:25,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:23:25,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-27 06:23:25,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-08-27 06:23:25,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-27 06:23:25,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-08-27 06:23:25,811 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 23 [2021-08-27 06:23:25,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:23:25,811 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-08-27 06:23:25,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:23:25,812 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-08-27 06:23:25,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-27 06:23:25,812 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:25,812 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:23:25,823 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 06:23:26,023 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 06:23:26,023 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-27 06:23:26,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:26,024 INFO L82 PathProgramCache]: Analyzing trace with hash 942254559, now seen corresponding path program 1 times [2021-08-27 06:23:26,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:26,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749854395] [2021-08-27 06:23:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:23:26,024 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:26,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:26,025 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 06:23:26,025 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 06:23:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:23:26,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 06:23:26,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:26,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:23:26,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:23:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 06:23:26,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:23:26,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749854395] [2021-08-27 06:23:26,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749854395] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:23:26,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:23:26,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2021-08-27 06:23:26,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58377994] [2021-08-27 06:23:26,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 06:23:26,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:23:26,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 06:23:26,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-27 06:23:26,582 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-27 06:23:26,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:23:26,746 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2021-08-27 06:23:26,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 06:23:26,747 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 24 [2021-08-27 06:23:26,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:23:26,748 INFO L225 Difference]: With dead ends: 55 [2021-08-27 06:23:26,748 INFO L226 Difference]: Without dead ends: 55 [2021-08-27 06:23:26,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 101.9ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-08-27 06:23:26,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-08-27 06:23:26,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 35. [2021-08-27 06:23:26,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-08-27 06:23:26,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-08-27 06:23:26,751 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 24 [2021-08-27 06:23:26,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:23:26,751 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-08-27 06:23:26,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-27 06:23:26,752 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-08-27 06:23:26,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-27 06:23:26,752 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:26,752 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:23:26,760 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 06:23:26,961 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 06:23:26,961 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting entry_pointErr5ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-27 06:23:26,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:26,962 INFO L82 PathProgramCache]: Analyzing trace with hash -854879341, now seen corresponding path program 1 times [2021-08-27 06:23:26,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:26,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863492792] [2021-08-27 06:23:26,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:23:26,962 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:26,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:26,963 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 06:23:26,964 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 06:23:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:23:27,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 06:23:27,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:27,200 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 06:23:27,311 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-27 06:23:27,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-08-27 06:23:27,453 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-08-27 06:23:27,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 42 [2021-08-27 06:23:27,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:23:27,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:23:33,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:23:33,829 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:23:33,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863492792] [2021-08-27 06:23:33,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863492792] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-27 06:23:33,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 06:23:33,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 13 [2021-08-27 06:23:33,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881580318] [2021-08-27 06:23:33,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 06:23:33,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:23:33,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 06:23:33,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=142, Unknown=3, NotChecked=0, Total=182 [2021-08-27 06:23:33,830 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:23:36,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:23:36,046 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-08-27 06:23:36,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 06:23:36,046 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2021-08-27 06:23:36,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:23:36,047 INFO L225 Difference]: With dead ends: 50 [2021-08-27 06:23:36,047 INFO L226 Difference]: Without dead ends: 50 [2021-08-27 06:23:36,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 6172.7ms TimeCoverageRelationStatistics Valid=37, Invalid=142, Unknown=3, NotChecked=0, Total=182 [2021-08-27 06:23:36,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-27 06:23:36,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2021-08-27 06:23:36,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-08-27 06:23:36,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-08-27 06:23:36,051 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25 [2021-08-27 06:23:36,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:23:36,051 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-08-27 06:23:36,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:23:36,051 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-08-27 06:23:36,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-27 06:23:36,052 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:36,052 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:23:36,071 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 06:23:36,252 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 06:23:36,253 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting entry_pointErr5ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-27 06:23:36,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:36,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1051392846, now seen corresponding path program 1 times [2021-08-27 06:23:36,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:36,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247152393] [2021-08-27 06:23:36,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:23:36,253 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:36,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:36,254 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 06:23:36,255 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 06:23:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:23:36,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 06:23:36,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:36,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:23:36,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2021-08-27 06:23:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:23:36,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:23:36,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:23:36,946 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:23:36,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247152393] [2021-08-27 06:23:36,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247152393] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:23:36,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:23:36,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-08-27 06:23:36,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143577173] [2021-08-27 06:23:36,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 06:23:36,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:23:36,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 06:23:36,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-08-27 06:23:36,947 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:23:37,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:23:37,330 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2021-08-27 06:23:37,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-27 06:23:37,330 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2021-08-27 06:23:37,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:23:37,331 INFO L225 Difference]: With dead ends: 53 [2021-08-27 06:23:37,331 INFO L226 Difference]: Without dead ends: 53 [2021-08-27 06:23:37,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 308.9ms TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2021-08-27 06:23:37,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-08-27 06:23:37,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 42. [2021-08-27 06:23:37,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-08-27 06:23:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-08-27 06:23:37,334 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25 [2021-08-27 06:23:37,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:23:37,334 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-08-27 06:23:37,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:23:37,334 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-08-27 06:23:37,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-27 06:23:37,335 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:37,335 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:23:37,342 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 06:23:37,541 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 06:23:37,542 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting entry_pointErr5ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-27 06:23:37,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:37,542 INFO L82 PathProgramCache]: Analyzing trace with hash 498430356, now seen corresponding path program 2 times [2021-08-27 06:23:37,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:37,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051174451] [2021-08-27 06:23:37,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 06:23:37,542 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:37,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:37,545 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 06:23:37,545 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 06:23:37,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 06:23:37,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:23:37,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:23:37,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:37,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 06:23:37,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:23:37,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 06:23:37,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:23:37,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051174451] [2021-08-27 06:23:37,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051174451] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:23:37,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:23:37,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-27 06:23:37,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83324774] [2021-08-27 06:23:37,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:23:37,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:23:37,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:23:37,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:23:37,958 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:23:37,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:23:37,974 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-08-27 06:23:37,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:23:37,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2021-08-27 06:23:37,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:23:37,975 INFO L225 Difference]: With dead ends: 43 [2021-08-27 06:23:37,975 INFO L226 Difference]: Without dead ends: 43 [2021-08-27 06:23:37,975 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:23:37,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-08-27 06:23:37,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2021-08-27 06:23:37,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-08-27 06:23:37,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2021-08-27 06:23:37,978 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 25 [2021-08-27 06:23:37,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:23:37,978 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-08-27 06:23:37,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:23:37,978 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2021-08-27 06:23:37,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-27 06:23:37,979 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:37,979 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 06:23:37,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-08-27 06:23:38,186 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 06:23:38,186 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-27 06:23:38,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:38,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1446021946, now seen corresponding path program 1 times [2021-08-27 06:23:38,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:38,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132245999] [2021-08-27 06:23:38,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:23:38,187 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:38,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:38,188 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 06:23:38,189 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 06:23:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:23:38,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-27 06:23:38,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-27 06:23:44,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:23:49,110 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:23:49,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132245999] [2021-08-27 06:23:49,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 06:23:49,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1290628198] [2021-08-27 06:23:49,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:23:49,111 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-27 06:23:49,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-27 06:23:49,112 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-27 06:23:49,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-08-27 06:23:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:23:49,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-27 06:23:49,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:49,503 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-27 06:23:49,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 29 [2021-08-27 06:23:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-27 06:23:55,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:24:02,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 06:24:02,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617981337] [2021-08-27 06:24:02,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:24:02,233 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 06:24:02,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:24:02,234 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 06:24:02,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-27 06:24:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:24:02,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-27 06:24:02,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:24:04,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-27 06:24:04,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:24:09,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 06:24:09,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:24:09,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-27 06:24:09,272 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-27 06:24:09,272 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-27 06:24:09,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 06:24:09,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-08-27 06:24:09,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-08-27 06:24:09,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-08-27 06:24:09,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-08-27 06:24:09,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-08-27 06:24:09,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-08-27 06:24:09,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-08-27 06:24:09,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-08-27 06:24:09,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-08-27 06:24:09,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-08-27 06:24:09,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-08-27 06:24:09,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-08-27 06:24:09,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-08-27 06:24:09,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-08-27 06:24:09,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-08-27 06:24:09,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-08-27 06:24:09,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-08-27 06:24:09,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-08-27 06:24:09,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-08-27 06:24:09,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-08-27 06:24:09,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-08-27 06:24:09,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-08-27 06:24:09,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-08-27 06:24:09,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-08-27 06:24:09,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-08-27 06:24:09,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-08-27 06:24:09,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-08-27 06:24:09,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-08-27 06:24:09,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-08-27 06:24:09,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-08-27 06:24:09,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-08-27 06:24:09,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-08-27 06:24:09,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-08-27 06:24:09,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-08-27 06:24:09,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-08-27 06:24:09,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-08-27 06:24:09,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-08-27 06:24:09,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-08-27 06:24:09,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-08-27 06:24:09,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-08-27 06:24:09,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-08-27 06:24:09,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-08-27 06:24:09,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:24:09,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:24:09,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:24:09,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:24:09,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:24:09,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:24:09,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-08-27 06:24:09,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-08-27 06:24:09,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-08-27 06:24:09,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-08-27 06:24:09,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-08-27 06:24:09,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-08-27 06:24:09,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-08-27 06:24:09,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-08-27 06:24:09,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:24:09,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:24:09,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:24:09,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:24:09,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:24:09,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:24:09,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-08-27 06:24:09,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-08-27 06:24:09,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-08-27 06:24:09,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-08-27 06:24:09,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-08-27 06:24:09,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-08-27 06:24:09,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-08-27 06:24:09,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-08-27 06:24:09,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:24:09,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:24:09,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:24:09,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:24:09,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:24:09,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:24:09,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-08-27 06:24:09,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-08-27 06:24:09,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-08-27 06:24:09,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 06:24:09,892 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 06:24:09,893 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-27 06:24:09,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:24:09 BoogieIcfgContainer [2021-08-27 06:24:09,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 06:24:09,901 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 06:24:09,901 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 06:24:09,901 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 06:24:09,901 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:23:21" (3/4) ... [2021-08-27 06:24:09,903 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 06:24:09,903 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 06:24:09,904 INFO L168 Benchmark]: Toolchain (without parser) took 49679.56 ms. Allocated memory was 56.6 MB in the beginning and 161.5 MB in the end (delta: 104.9 MB). Free memory was 32.8 MB in the beginning and 62.5 MB in the end (delta: -29.7 MB). Peak memory consumption was 76.0 MB. Max. memory is 16.1 GB. [2021-08-27 06:24:09,904 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 38.0 MB in the end (delta: 33.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:24:09,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 402.17 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 32.6 MB in the beginning and 42.4 MB in the end (delta: -9.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-08-27 06:24:09,905 INFO L168 Benchmark]: Boogie Preprocessor took 102.52 ms. Allocated memory is still 75.5 MB. Free memory was 42.4 MB in the beginning and 54.4 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 06:24:09,905 INFO L168 Benchmark]: RCFGBuilder took 903.01 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 54.4 MB in the beginning and 59.8 MB in the end (delta: -5.5 MB). Peak memory consumption was 33.2 MB. Max. memory is 16.1 GB. [2021-08-27 06:24:09,905 INFO L168 Benchmark]: TraceAbstraction took 48264.61 ms. Allocated memory was 92.3 MB in the beginning and 161.5 MB in the end (delta: 69.2 MB). Free memory was 59.8 MB in the beginning and 62.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 66.5 MB. Max. memory is 16.1 GB. [2021-08-27 06:24:09,905 INFO L168 Benchmark]: Witness Printer took 2.64 ms. Allocated memory is still 161.5 MB. Free memory is still 62.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:24:09,906 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 38.0 MB in the end (delta: 33.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 402.17 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 32.6 MB in the beginning and 42.4 MB in the end (delta: -9.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 102.52 ms. Allocated memory is still 75.5 MB. Free memory was 42.4 MB in the beginning and 54.4 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 903.01 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 54.4 MB in the beginning and 59.8 MB in the end (delta: -5.5 MB). Peak memory consumption was 33.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 48264.61 ms. Allocated memory was 92.3 MB in the beginning and 161.5 MB in the end (delta: 69.2 MB). Free memory was 59.8 MB in the beginning and 62.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 66.5 MB. Max. memory is 16.1 GB. * Witness Printer took 2.64 ms. Allocated memory is still 161.5 MB. Free memory is still 62.5 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 ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 765]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: unable to decide satisfiability of path constraint, overapproximation of memtrack at line 765. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L766] CALL entry_point() [L758] CALL, EXPR ldv_malloc(sizeof(int)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L758] RET, EXPR ldv_malloc(sizeof(int)) [L758] int *p = (int *)ldv_malloc(sizeof(int)); [L759] COND TRUE \read(*p) [L760] CALL, EXPR ldv_malloc(sizeof(int)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L760] RET, EXPR ldv_malloc(sizeof(int)) [L760] int *q = (int *)ldv_malloc(sizeof(int)); [L761] free(q) [L761] free(q) [L761] free(q) [L762] free(p) [L762] free(p) [L762] free(p) [L766] RET entry_point() - 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. - UnprovableResult [Line: 761]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 47 procedures, 344 locations, 77 error locations. Started 1 CEGAR loops. OverallTime: 48215.1ms, OverallIterations: 12, TraceHistogramMax: 2, EmptinessCheckTime: 24.1ms, AutomataDifference: 3079.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 333 SDtfs, 203 SDslu, 846 SDs, 0 SdLazy, 697 SolverSat, 72 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2618.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 479 GetRequests, 401 SyntacticMatches, 7 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 6721.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=0, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 49.4ms AutomataMinimizationTime, 11 MinimizatonAttempts, 110 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 84.8ms SsaConstructionTime, 173.4ms SatisfiabilityAnalysisTime, 8947.0ms InterpolantComputationTime, 239 NumberOfCodeBlocks, 239 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 456 ConstructedInterpolants, 31 QuantifiedInterpolants, 1990 SizeOfPredicates, 3 NumberOfNonLiveVariables, 882 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 22 InterpolantComputations, 13 PerfectInterpolantSequences, 54/72 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 06:24:09,947 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...