./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.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_test17_1-2.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 5be2e30df948ebd6000c3afde848283ab7f83dcc ................................................................................................................................... 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_test17_1-2.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 5be2e30df948ebd6000c3afde848283ab7f83dcc .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 06:11:33,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:11:33,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:11:33,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:11:33,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:11:33,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:11:33,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:11:33,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:11:33,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:11:33,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:11:33,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:11:33,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:11:33,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:11:33,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:11:33,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:11:33,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:11:33,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:11:33,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:11:33,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:11:33,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:11:33,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:11:33,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:11:33,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:11:33,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:11:33,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:11:33,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:11:33,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:11:33,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:11:33,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:11:33,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:11:33,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:11:33,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:11:33,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:11:33,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:11:33,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:11:33,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:11:33,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:11:33,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:11:33,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:11:33,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:11:33,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:11:33,177 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 06:11:33,191 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:11:33,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:11:33,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:11:33,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:11:33,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:11:33,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:11:33,193 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:11:33,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:11:33,194 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:11:33,194 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:11:33,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:11:33,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:11:33,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:11:33,195 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:11:33,195 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:11:33,195 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:11:33,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:11:33,195 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:11:33,195 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:11:33,196 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:11:33,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:11:33,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:11:33,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:11:33,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:11:33,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:11:33,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:11:33,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 06:11:33,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 06:11:33,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:11:33,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5be2e30df948ebd6000c3afde848283ab7f83dcc [2021-08-27 06:11:33,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:11:33,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:11:33,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:11:33,433 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:11:33,433 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:11:33,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2021-08-27 06:11:33,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/782e9f1f0/8cb18defab8d4a418495d281f868a460/FLAGbe2a8f7fb [2021-08-27 06:11:33,903 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:11:33,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2021-08-27 06:11:33,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/782e9f1f0/8cb18defab8d4a418495d281f868a460/FLAGbe2a8f7fb [2021-08-27 06:11:34,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/782e9f1f0/8cb18defab8d4a418495d281f868a460 [2021-08-27 06:11:34,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:11:34,250 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:11:34,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:11:34,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:11:34,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:11:34,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:11:34" (1/1) ... [2021-08-27 06:11:34,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@127a9976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:34, skipping insertion in model container [2021-08-27 06:11:34,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:11:34" (1/1) ... [2021-08-27 06:11:34,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:11:34,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:11:34,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:11:34,534 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 06:11:34,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@579fe3df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:34, skipping insertion in model container [2021-08-27 06:11:34,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:11:34,535 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-27 06:11:34,537 INFO L168 Benchmark]: Toolchain (without parser) took 285.83 ms. Allocated memory is still 62.9 MB. Free memory was 46.4 MB in the beginning and 43.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 06:11:34,537 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 46.1 MB. Free memory is still 28.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:11:34,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.20 ms. Allocated memory is still 62.9 MB. Free memory was 46.4 MB in the beginning and 43.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 06:11:34,539 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 46.1 MB. Free memory is still 28.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 284.20 ms. Allocated memory is still 62.9 MB. Free memory was 46.4 MB in the beginning and 43.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 14.7 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 06:11:35,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:11:35,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:11:35,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:11:35,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:11:35,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:11:35,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:11:35,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:11:35,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:11:35,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:11:35,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:11:35,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:11:35,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:11:35,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:11:35,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:11:35,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:11:35,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:11:35,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:11:35,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:11:35,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:11:35,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:11:35,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:11:35,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:11:35,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:11:35,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:11:35,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:11:35,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:11:35,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:11:35,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:11:35,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:11:35,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:11:35,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:11:35,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:11:35,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:11:35,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:11:35,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:11:35,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:11:35,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:11:35,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:11:35,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:11:35,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:11:35,889 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 06:11:35,922 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:11:35,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:11:35,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:11:35,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:11:35,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:11:35,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:11:35,925 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:11:35,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:11:35,925 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:11:35,925 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:11:35,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:11:35,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:11:35,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:11:35,926 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:11:35,926 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:11:35,927 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:11:35,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:11:35,927 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:11:35,927 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 06:11:35,927 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 06:11:35,927 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:11:35,927 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:11:35,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:11:35,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:11:35,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:11:35,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:11:35,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:11:35,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:11:35,928 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 06:11:35,929 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 06:11:35,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:11:35,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 06:11:35,929 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5be2e30df948ebd6000c3afde848283ab7f83dcc [2021-08-27 06:11:36,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:11:36,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:11:36,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:11:36,190 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:11:36,191 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:11:36,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2021-08-27 06:11:36,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad60f3df0/1ea123d605084c8bbb9b845919dd20a1/FLAG583f946c7 [2021-08-27 06:11:36,662 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:11:36,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2021-08-27 06:11:36,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad60f3df0/1ea123d605084c8bbb9b845919dd20a1/FLAG583f946c7 [2021-08-27 06:11:36,682 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad60f3df0/1ea123d605084c8bbb9b845919dd20a1 [2021-08-27 06:11:36,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:11:36,685 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:11:36,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:11:36,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:11:36,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:11:36,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:11:36" (1/1) ... [2021-08-27 06:11:36,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@600bbb5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:36, skipping insertion in model container [2021-08-27 06:11:36,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:11:36" (1/1) ... [2021-08-27 06:11:36,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:11:36,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:11:37,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:11:37,059 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-27 06:11:37,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:11:37,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:11:37,101 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 06:11:37,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:11:37,176 INFO L208 MainTranslator]: Completed translation [2021-08-27 06:11:37,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:37 WrapperNode [2021-08-27 06:11:37,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:11:37,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 06:11:37,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 06:11:37,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 06:11:37,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:37" (1/1) ... [2021-08-27 06:11:37,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:37" (1/1) ... [2021-08-27 06:11:37,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:37" (1/1) ... [2021-08-27 06:11:37,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:37" (1/1) ... [2021-08-27 06:11:37,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:37" (1/1) ... [2021-08-27 06:11:37,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:37" (1/1) ... [2021-08-27 06:11:37,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:37" (1/1) ... [2021-08-27 06:11:37,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 06:11:37,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 06:11:37,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 06:11:37,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 06:11:37,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:37" (1/1) ... [2021-08-27 06:11:37,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:11:37,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:11:37,290 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 06:11:37,322 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 06:11:37,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 06:11:37,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 06:11:37,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-08-27 06:11:37,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:11:37,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 06:11:37,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 06:11:37,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 06:11:37,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 06:11:37,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 06:11:37,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-08-27 06:11:37,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-08-27 06:11:37,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-08-27 06:11:37,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-08-27 06:11:37,338 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-08-27 06:11:37,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-08-27 06:11:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-08-27 06:11:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-08-27 06:11:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-08-27 06:11:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-08-27 06:11:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-08-27 06:11:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-08-27 06:11:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-08-27 06:11:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-08-27 06:11:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-08-27 06:11:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-08-27 06:11:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-08-27 06:11:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-08-27 06:11:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-08-27 06:11:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-08-27 06:11:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-08-27 06:11:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-08-27 06:11:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-08-27 06:11:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-08-27 06:11:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-08-27 06:11:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-08-27 06:11:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-08-27 06:11:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-08-27 06:11:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-08-27 06:11:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-08-27 06:11:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-08-27 06:11:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-08-27 06:11:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-08-27 06:11:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_17 [2021-08-27 06:11:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure free_17 [2021-08-27 06:11:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-08-27 06:11:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 06:11:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-27 06:11:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-08-27 06:11:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-08-27 06:11:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 06:11:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 06:11:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 06:11:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 06:11:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 06:11:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 06:11:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 06:11:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 06:11:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 06:11:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 06:11:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 06:11:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 06:11:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 06:11:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 06:11:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 06:11:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 06:11:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 06:11:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 06:11:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 06:11:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 06:11:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 06:11:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 06:11:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 06:11:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 06:11:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 06:11:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 06:11:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 06:11:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 06:11:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 06:11:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 06:11:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 06:11:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 06:11:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 06:11:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 06:11:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 06:11:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 06:11:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 06:11:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 06:11:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 06:11:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 06:11:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 06:11:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 06:11:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 06:11:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 06:11:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 06:11:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 06:11:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 06:11:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 06:11:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 06:11:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 06:11:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 06:11:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 06:11:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 06:11:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 06:11:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 06:11:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 06:11:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 06:11:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 06:11:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 06:11:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 06:11:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 06:11:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 06:11:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 06:11:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 06:11:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 06:11:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 06:11:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 06:11:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 06:11:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 06:11:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 06:11:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 06:11:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 06:11:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 06:11:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 06:11:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 06:11:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 06:11:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 06:11:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 06:11:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 06:11:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 06:11:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 06:11:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 06:11:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 06:11:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 06:11:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 06:11:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 06:11:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 06:11:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 06:11:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 06:11:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 06:11:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 06:11:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 06:11:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 06:11:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 06:11:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 06:11:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 06:11:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 06:11:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 06:11:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 06:11:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 06:11:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 06:11:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 06:11:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 06:11:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 06:11:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 06:11:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 06:11:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 06:11:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-08-27 06:11:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 06:11:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-08-27 06:11:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-08-27 06:11:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 06:11:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 06:11:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-08-27 06:11:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 06:11:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-08-27 06:11:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-08-27 06:11:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-08-27 06:11:37,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 06:11:37,366 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-08-27 06:11:37,366 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-08-27 06:11:37,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-08-27 06:11:37,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 06:11:37,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-08-27 06:11:37,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-08-27 06:11:37,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-08-27 06:11:37,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-08-27 06:11:37,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-08-27 06:11:37,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-08-27 06:11:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 06:11:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-08-27 06:11:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-08-27 06:11:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-08-27 06:11:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-08-27 06:11:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-08-27 06:11:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-27 06:11:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-27 06:11:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-08-27 06:11:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-08-27 06:11:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-08-27 06:11:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-08-27 06:11:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-08-27 06:11:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-08-27 06:11:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-08-27 06:11:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-08-27 06:11:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-08-27 06:11:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-08-27 06:11:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-08-27 06:11:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-08-27 06:11:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-08-27 06:11:37,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-08-27 06:11:37,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-27 06:11:37,369 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-08-27 06:11:37,369 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-08-27 06:11:37,369 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_17 [2021-08-27 06:11:37,369 INFO L130 BoogieDeclarations]: Found specification of procedure free_17 [2021-08-27 06:11:37,369 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-08-27 06:11:37,369 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 06:11:37,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 06:11:37,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 06:11:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 06:11:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 06:11:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:11:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-08-27 06:11:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-08-27 06:11:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-08-27 06:11:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-08-27 06:11:37,963 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 06:11:38,239 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 06:11:38,623 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 06:11:38,623 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 06:11:38,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:11:38 BoogieIcfgContainer [2021-08-27 06:11:38,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 06:11:38,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 06:11:38,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 06:11:38,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 06:11:38,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:11:36" (1/3) ... [2021-08-27 06:11:38,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca72fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:11:38, skipping insertion in model container [2021-08-27 06:11:38,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:37" (2/3) ... [2021-08-27 06:11:38,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca72fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:11:38, skipping insertion in model container [2021-08-27 06:11:38,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:11:38" (3/3) ... [2021-08-27 06:11:38,629 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test17_1-2.i [2021-08-27 06:11:38,632 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 06:11:38,632 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 90 error locations. [2021-08-27 06:11:38,656 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 06:11:38,660 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 06:11:38,660 INFO L340 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2021-08-27 06:11:38,672 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 83 states have (on average 1.6385542168674698) internal successors, (136), 120 states have internal predecessors, (136), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-08-27 06:11:38,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 06:11:38,678 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:38,679 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:38,679 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:11:38,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:38,684 INFO L82 PathProgramCache]: Analyzing trace with hash -67233649, now seen corresponding path program 1 times [2021-08-27 06:11:38,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:38,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410696771] [2021-08-27 06:11:38,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:38,692 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:38,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:38,694 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 06:11:38,699 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 06:11:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:38,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:11:38,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:39,072 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 06:11:39,135 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 06:11:39,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:39,256 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 06:11:39,257 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:39,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410696771] [2021-08-27 06:11:39,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410696771] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:39,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:39,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-27 06:11:39,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176090220] [2021-08-27 06:11:39,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:11:39,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:39,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:11:39,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:11:39,271 INFO L87 Difference]: Start difference. First operand has 147 states, 83 states have (on average 1.6385542168674698) internal successors, (136), 120 states have internal predecessors, (136), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:11:39,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:39,425 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2021-08-27 06:11:39,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:11:39,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-08-27 06:11:39,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:39,431 INFO L225 Difference]: With dead ends: 87 [2021-08-27 06:11:39,431 INFO L226 Difference]: Without dead ends: 84 [2021-08-27 06:11:39,432 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.3ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:11:39,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-27 06:11:39,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2021-08-27 06:11:39,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 66 states have internal predecessors, (76), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-27 06:11:39,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2021-08-27 06:11:39,460 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 16 [2021-08-27 06:11:39,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:39,460 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2021-08-27 06:11:39,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:11:39,460 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2021-08-27 06:11:39,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 06:11:39,461 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:39,461 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:39,469 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 06:11:39,670 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 06:11:39,670 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:11:39,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:39,671 INFO L82 PathProgramCache]: Analyzing trace with hash -67233648, now seen corresponding path program 1 times [2021-08-27 06:11:39,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:39,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089209428] [2021-08-27 06:11:39,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:39,671 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:39,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:39,674 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 06:11:39,675 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 06:11:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:39,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 06:11:39,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:40,023 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 06:11:40,216 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 06:11:40,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:40,788 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 06:11:40,788 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:40,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089209428] [2021-08-27 06:11:40,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089209428] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:40,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:40,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-08-27 06:11:40,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193336359] [2021-08-27 06:11:40,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 06:11:40,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:40,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 06:11:40,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-08-27 06:11:40,795 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:11:41,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:41,533 INFO L93 Difference]: Finished difference Result 93 states and 108 transitions. [2021-08-27 06:11:41,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 06:11:41,534 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 16 [2021-08-27 06:11:41,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:41,535 INFO L225 Difference]: With dead ends: 93 [2021-08-27 06:11:41,535 INFO L226 Difference]: Without dead ends: 93 [2021-08-27 06:11:41,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 528.8ms TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-08-27 06:11:41,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-27 06:11:41,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2021-08-27 06:11:41,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 71 states have internal predecessors, (82), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-27 06:11:41,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2021-08-27 06:11:41,541 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 16 [2021-08-27 06:11:41,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:41,541 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2021-08-27 06:11:41,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:11:41,542 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2021-08-27 06:11:41,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 06:11:41,542 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:41,542 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:41,550 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 06:11:41,748 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 06:11:41,749 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:11:41,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:41,749 INFO L82 PathProgramCache]: Analyzing trace with hash 820270032, now seen corresponding path program 1 times [2021-08-27 06:11:41,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:41,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626588752] [2021-08-27 06:11:41,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:41,750 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:41,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:41,751 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 06:11:41,752 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 06:11:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:41,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 06:11:41,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:42,094 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 06:11:42,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:42,198 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 06:11:42,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:42,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626588752] [2021-08-27 06:11:42,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626588752] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:42,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:42,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:11:42,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836793261] [2021-08-27 06:11:42,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:11:42,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:42,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:11:42,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:11:42,200 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:11:42,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:42,233 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2021-08-27 06:11:42,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:11:42,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-08-27 06:11:42,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:42,236 INFO L225 Difference]: With dead ends: 84 [2021-08-27 06:11:42,236 INFO L226 Difference]: Without dead ends: 84 [2021-08-27 06:11:42,236 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.8ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:11:42,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-27 06:11:42,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2021-08-27 06:11:42,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 50 states have (on average 1.52) internal successors, (76), 68 states have internal predecessors, (76), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-27 06:11:42,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2021-08-27 06:11:42,240 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 16 [2021-08-27 06:11:42,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:42,240 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2021-08-27 06:11:42,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:11:42,241 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2021-08-27 06:11:42,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 06:11:42,241 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:42,241 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:42,248 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 06:11:42,447 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 06:11:42,448 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:11:42,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:42,449 INFO L82 PathProgramCache]: Analyzing trace with hash -2083416263, now seen corresponding path program 1 times [2021-08-27 06:11:42,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:42,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938644648] [2021-08-27 06:11:42,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:42,449 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:42,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:42,450 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 06:11:42,451 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 06:11:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:42,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:11:42,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:42,802 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 06:11:42,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:42,910 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 06:11:42,910 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:42,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938644648] [2021-08-27 06:11:42,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938644648] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:42,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:42,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:11:42,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406291168] [2021-08-27 06:11:42,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:11:42,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:42,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:11:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:11:42,912 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (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 06:11:42,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:42,952 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2021-08-27 06:11:42,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:11:42,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (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 17 [2021-08-27 06:11:42,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:42,953 INFO L225 Difference]: With dead ends: 84 [2021-08-27 06:11:42,953 INFO L226 Difference]: Without dead ends: 84 [2021-08-27 06:11:42,954 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:11:42,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-27 06:11:42,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2021-08-27 06:11:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 50 states have (on average 1.5) internal successors, (75), 68 states have internal predecessors, (75), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-27 06:11:42,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-08-27 06:11:42,957 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 17 [2021-08-27 06:11:42,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:42,957 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-08-27 06:11:42,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (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 06:11:42,958 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-08-27 06:11:42,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 06:11:42,958 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:42,958 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:42,970 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 06:11:43,165 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 06:11:43,165 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:11:43,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:43,166 INFO L82 PathProgramCache]: Analyzing trace with hash -340605928, now seen corresponding path program 1 times [2021-08-27 06:11:43,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:43,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895654133] [2021-08-27 06:11:43,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:43,166 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:43,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:43,167 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 06:11:43,168 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 06:11:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:43,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 06:11:43,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:43,537 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 06:11:43,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:43,659 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 06:11:43,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:43,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895654133] [2021-08-27 06:11:43,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895654133] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:43,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:43,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 06:11:43,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660475222] [2021-08-27 06:11:43,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 06:11:43,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:43,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 06:11:43,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:11:43,661 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 06:11:43,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:43,773 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2021-08-27 06:11:43,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 06:11:43,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 17 [2021-08-27 06:11:43,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:43,774 INFO L225 Difference]: With dead ends: 120 [2021-08-27 06:11:43,775 INFO L226 Difference]: Without dead ends: 115 [2021-08-27 06:11:43,775 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:11:43,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-27 06:11:43,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 80. [2021-08-27 06:11:43,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 67 states have internal predecessors, (73), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-27 06:11:43,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2021-08-27 06:11:43,779 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 17 [2021-08-27 06:11:43,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:43,779 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2021-08-27 06:11:43,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 06:11:43,779 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2021-08-27 06:11:43,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 06:11:43,780 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:43,781 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:43,789 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 06:11:43,987 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 06:11:43,987 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:11:43,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:43,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1976385840, now seen corresponding path program 1 times [2021-08-27 06:11:43,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:43,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325863572] [2021-08-27 06:11:43,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:43,988 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:43,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:43,989 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 06:11:43,989 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 06:11:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:44,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 06:11:44,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:44,367 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 06:11:44,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:44,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:45,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:45,664 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:45,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325863572] [2021-08-27 06:11:45,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325863572] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:11:45,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:11:45,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-08-27 06:11:45,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936366359] [2021-08-27 06:11:45,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-27 06:11:45,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:45,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-27 06:11:45,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-08-27 06:11:45,666 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:11:47,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:47,064 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2021-08-27 06:11:47,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 06:11:47,065 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 22 [2021-08-27 06:11:47,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:47,066 INFO L225 Difference]: With dead ends: 97 [2021-08-27 06:11:47,066 INFO L226 Difference]: Without dead ends: 97 [2021-08-27 06:11:47,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1244.4ms TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2021-08-27 06:11:47,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-08-27 06:11:47,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2021-08-27 06:11:47,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 60 states have (on average 1.45) internal successors, (87), 79 states have internal predecessors, (87), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-27 06:11:47,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2021-08-27 06:11:47,070 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 22 [2021-08-27 06:11:47,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:47,071 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2021-08-27 06:11:47,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:11:47,071 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2021-08-27 06:11:47,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-27 06:11:47,072 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:47,072 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:47,096 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 06:11:47,279 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 06:11:47,279 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting free_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:11:47,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:47,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1887639459, now seen corresponding path program 1 times [2021-08-27 06:11:47,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:47,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473804961] [2021-08-27 06:11:47,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:47,280 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:47,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:47,283 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 06:11:47,285 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 06:11:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:47,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 06:11:47,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:47,856 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:47,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:48,097 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:48,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473804961] [2021-08-27 06:11:48,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473804961] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:11:48,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:11:48,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-08-27 06:11:48,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608695790] [2021-08-27 06:11:48,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 06:11:48,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:48,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 06:11:48,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-08-27 06:11:48,099 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-27 06:11:48,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:48,347 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2021-08-27 06:11:48,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 06:11:48,348 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 35 [2021-08-27 06:11:48,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:48,349 INFO L225 Difference]: With dead ends: 98 [2021-08-27 06:11:48,349 INFO L226 Difference]: Without dead ends: 98 [2021-08-27 06:11:48,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 227.8ms TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2021-08-27 06:11:48,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-08-27 06:11:48,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2021-08-27 06:11:48,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 84 states have internal predecessors, (90), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-27 06:11:48,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions. [2021-08-27 06:11:48,352 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 35 [2021-08-27 06:11:48,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:48,355 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 104 transitions. [2021-08-27 06:11:48,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-27 06:11:48,355 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 104 transitions. [2021-08-27 06:11:48,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-27 06:11:48,358 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:48,359 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:48,368 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 06:11:48,564 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 06:11:48,565 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:11:48,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:48,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1668351152, now seen corresponding path program 2 times [2021-08-27 06:11:48,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:48,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818223175] [2021-08-27 06:11:48,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 06:11:48,566 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:48,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:48,566 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 06:11:48,568 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 06:11:48,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 06:11:48,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:11:48,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-27 06:11:48,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:49,032 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 06:11:49,739 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:49,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:52,105 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:52,105 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:52,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818223175] [2021-08-27 06:11:52,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818223175] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:11:52,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:11:52,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-08-27 06:11:52,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536884101] [2021-08-27 06:11:52,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-08-27 06:11:52,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:52,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-08-27 06:11:52,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2021-08-27 06:11:52,107 INFO L87 Difference]: Start difference. First operand 97 states and 104 transitions. Second operand has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:11:56,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:56,597 INFO L93 Difference]: Finished difference Result 118 states and 131 transitions. [2021-08-27 06:11:56,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-27 06:11:56,598 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2021-08-27 06:11:56,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:56,599 INFO L225 Difference]: With dead ends: 118 [2021-08-27 06:11:56,599 INFO L226 Difference]: Without dead ends: 118 [2021-08-27 06:11:56,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 4607.7ms TimeCoverageRelationStatistics Valid=487, Invalid=1493, Unknown=0, NotChecked=0, Total=1980 [2021-08-27 06:11:56,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-27 06:11:56,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2021-08-27 06:11:56,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 103 states have internal predecessors, (114), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-27 06:11:56,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2021-08-27 06:11:56,604 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 34 [2021-08-27 06:11:56,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:56,604 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2021-08-27 06:11:56,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:11:56,604 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2021-08-27 06:11:56,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-27 06:11:56,605 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:56,605 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:56,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:56,812 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 06:11:56,813 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting free_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:11:56,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:56,813 INFO L82 PathProgramCache]: Analyzing trace with hash 355937783, now seen corresponding path program 2 times [2021-08-27 06:11:56,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:56,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141560400] [2021-08-27 06:11:56,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 06:11:56,813 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:56,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:56,816 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 06:11:56,817 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 06:11:57,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 06:11:57,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:11:57,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 06:11:57,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-08-27 06:11:57,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-08-27 06:11:57,820 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:57,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141560400] [2021-08-27 06:11:57,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141560400] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:57,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:57,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-08-27 06:11:57,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261836080] [2021-08-27 06:11:57,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 06:11:57,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:57,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 06:11:57,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-27 06:11:57,822 INFO L87 Difference]: Start difference. First operand 116 states and 128 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 06:11:57,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:57,906 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2021-08-27 06:11:57,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 06:11:57,910 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2021-08-27 06:11:57,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:57,910 INFO L225 Difference]: With dead ends: 147 [2021-08-27 06:11:57,911 INFO L226 Difference]: Without dead ends: 144 [2021-08-27 06:11:57,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 44.2ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-27 06:11:57,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-08-27 06:11:57,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 117. [2021-08-27 06:11:57,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 85 states have (on average 1.3529411764705883) internal successors, (115), 104 states have internal predecessors, (115), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-27 06:11:57,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 129 transitions. [2021-08-27 06:11:57,914 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 129 transitions. Word has length 50 [2021-08-27 06:11:57,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:57,915 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 129 transitions. [2021-08-27 06:11:57,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 06:11:57,915 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 129 transitions. [2021-08-27 06:11:57,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-27 06:11:57,916 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:57,916 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:57,923 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 06:11:58,123 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 06:11:58,123 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting alloc_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:11:58,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:58,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1622715602, now seen corresponding path program 1 times [2021-08-27 06:11:58,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:58,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462814426] [2021-08-27 06:11:58,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:58,124 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:58,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:58,125 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 06:11:58,126 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 06:11:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:58,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 06:11:58,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 4 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:59,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:59,688 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-27 06:11:59,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:59,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462814426] [2021-08-27 06:11:59,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462814426] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:11:59,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:11:59,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-08-27 06:11:59,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725261060] [2021-08-27 06:11:59,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 06:11:59,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:59,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 06:11:59,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-08-27 06:11:59,690 INFO L87 Difference]: Start difference. First operand 117 states and 129 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-27 06:12:00,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:12:00,018 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2021-08-27 06:12:00,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 06:12:00,019 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 50 [2021-08-27 06:12:00,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:12:00,019 INFO L225 Difference]: With dead ends: 117 [2021-08-27 06:12:00,019 INFO L226 Difference]: Without dead ends: 117 [2021-08-27 06:12:00,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 408.6ms TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2021-08-27 06:12:00,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-27 06:12:00,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-27 06:12:00,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 85 states have (on average 1.3294117647058823) internal successors, (113), 104 states have internal predecessors, (113), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-27 06:12:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 127 transitions. [2021-08-27 06:12:00,023 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 127 transitions. Word has length 50 [2021-08-27 06:12:00,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:12:00,023 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 127 transitions. [2021-08-27 06:12:00,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-27 06:12:00,023 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 127 transitions. [2021-08-27 06:12:00,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-27 06:12:00,024 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:12:00,024 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:12:00,038 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 06:12:00,231 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 06:12:00,231 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alloc_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:12:00,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:12:00,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1535917294, now seen corresponding path program 2 times [2021-08-27 06:12:00,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:12:00,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545701224] [2021-08-27 06:12:00,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 06:12:00,232 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:12:00,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:12:00,233 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 06:12:00,234 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 06:12:00,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 06:12:00,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:12:00,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 06:12:00,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:12:00,911 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 06:12:01,187 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-27 06:12:01,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-08-27 06:12:01,225 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:12:01,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:12:01,628 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:12:01,628 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:12:01,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545701224] [2021-08-27 06:12:01,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545701224] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:12:01,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:12:01,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-08-27 06:12:01,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678117230] [2021-08-27 06:12:01,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 06:12:01,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:12:01,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 06:12:01,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-08-27 06:12:01,630 INFO L87 Difference]: Start difference. First operand 117 states and 127 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:12:02,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:12:02,281 INFO L93 Difference]: Finished difference Result 206 states and 232 transitions. [2021-08-27 06:12:02,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 06:12:02,281 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2021-08-27 06:12:02,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:12:02,283 INFO L225 Difference]: With dead ends: 206 [2021-08-27 06:12:02,283 INFO L226 Difference]: Without dead ends: 204 [2021-08-27 06:12:02,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 96 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 289.1ms TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-08-27 06:12:02,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-08-27 06:12:02,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 133. [2021-08-27 06:12:02,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 99 states have (on average 1.3131313131313131) internal successors, (130), 116 states have internal predecessors, (130), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2021-08-27 06:12:02,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 149 transitions. [2021-08-27 06:12:02,287 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 149 transitions. Word has length 56 [2021-08-27 06:12:02,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:12:02,287 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 149 transitions. [2021-08-27 06:12:02,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:12:02,288 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 149 transitions. [2021-08-27 06:12:02,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-27 06:12:02,289 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:12:02,289 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:12:02,301 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 06:12:02,492 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 06:12:02,493 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting alloc_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:12:02,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:12:02,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1535917293, now seen corresponding path program 1 times [2021-08-27 06:12:02,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:12:02,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923213516] [2021-08-27 06:12:02,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:12:02,494 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:12:02,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:12:02,495 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 06:12:02,506 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 06:12:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:12:03,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-27 06:12:03,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:12:03,411 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 06:12:03,417 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 06:12:06,278 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 06:12:06,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2021-08-27 06:12:06,290 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 06:12:06,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2021-08-27 06:12:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:12:06,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:12:25,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2021-08-27 06:12:25,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2021-08-27 06:12:25,726 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:12:25,727 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:12:25,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923213516] [2021-08-27 06:12:25,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923213516] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:12:25,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:12:25,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-08-27 06:12:25,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760935283] [2021-08-27 06:12:25,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 06:12:25,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:12:25,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 06:12:25,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=403, Unknown=6, NotChecked=0, Total=462 [2021-08-27 06:12:25,728 INFO L87 Difference]: Start difference. First operand 133 states and 149 transitions. Second operand has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-27 06:15:37,943 WARN L207 SmtUtils]: Spent 6.19 s on a formula simplification that was a NOOP. DAG size: 61 [2021-08-27 06:16:49,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:16:49,940 INFO L93 Difference]: Finished difference Result 392 states and 450 transitions. [2021-08-27 06:16:49,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-27 06:16:49,942 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 56 [2021-08-27 06:16:49,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:16:49,945 INFO L225 Difference]: With dead ends: 392 [2021-08-27 06:16:49,945 INFO L226 Difference]: Without dead ends: 392 [2021-08-27 06:16:49,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 103517.1ms TimeCoverageRelationStatistics Valid=265, Invalid=1776, Unknown=29, NotChecked=0, Total=2070 [2021-08-27 06:16:49,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-08-27 06:16:49,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 161. [2021-08-27 06:16:49,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 122 states have (on average 1.319672131147541) internal successors, (161), 138 states have internal predecessors, (161), 12 states have call successors, (12), 8 states have call predecessors, (12), 10 states have return successors, (20), 14 states have call predecessors, (20), 11 states have call successors, (20) [2021-08-27 06:16:49,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 193 transitions. [2021-08-27 06:16:49,951 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 193 transitions. Word has length 56 [2021-08-27 06:16:49,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:16:49,952 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 193 transitions. [2021-08-27 06:16:49,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-27 06:16:49,952 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 193 transitions. [2021-08-27 06:16:49,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-27 06:16:49,956 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:16:49,956 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 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 06:16:49,965 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 06:16:50,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:16:50,156 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting alloc_17Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:16:50,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:16:50,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1452186463, now seen corresponding path program 1 times [2021-08-27 06:16:50,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:16:50,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528188570] [2021-08-27 06:16:50,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:16:50,157 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:16:50,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:16:50,158 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:16:50,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-08-27 06:16:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:16:51,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:16:51,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:16:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-27 06:16:51,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:16:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-27 06:16:51,580 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:16:51,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528188570] [2021-08-27 06:16:51,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528188570] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:16:51,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:16:51,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:16:51,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399432104] [2021-08-27 06:16:51,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:16:51,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:16:51,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:16:51,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:16:51,582 INFO L87 Difference]: Start difference. First operand 161 states and 193 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:16:51,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:16:51,687 INFO L93 Difference]: Finished difference Result 184 states and 221 transitions. [2021-08-27 06:16:51,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 06:16:51,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 58 [2021-08-27 06:16:51,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:16:51,690 INFO L225 Difference]: With dead ends: 184 [2021-08-27 06:16:51,691 INFO L226 Difference]: Without dead ends: 184 [2021-08-27 06:16:51,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:16:51,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-08-27 06:16:51,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 165. [2021-08-27 06:16:51,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 126 states have (on average 1.3015873015873016) internal successors, (164), 140 states have internal predecessors, (164), 12 states have call successors, (12), 8 states have call predecessors, (12), 10 states have return successors, (20), 16 states have call predecessors, (20), 11 states have call successors, (20) [2021-08-27 06:16:51,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 196 transitions. [2021-08-27 06:16:51,695 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 196 transitions. Word has length 58 [2021-08-27 06:16:51,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:16:51,695 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 196 transitions. [2021-08-27 06:16:51,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:16:51,695 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 196 transitions. [2021-08-27 06:16:51,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-27 06:16:51,696 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:16:51,696 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:16:51,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-08-27 06:16:51,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:16:51,896 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting alloc_17Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:16:51,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:16:51,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1099970498, now seen corresponding path program 1 times [2021-08-27 06:16:51,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:16:51,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934430207] [2021-08-27 06:16:51,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:16:51,897 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:16:51,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:16:51,898 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:16:51,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-08-27 06:16:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:16:52,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 06:16:52,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:16:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-08-27 06:16:53,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:16:53,375 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-08-27 06:16:53,375 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:16:53,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934430207] [2021-08-27 06:16:53,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934430207] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:16:53,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:16:53,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-08-27 06:16:53,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811039885] [2021-08-27 06:16:53,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 06:16:53,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:16:53,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 06:16:53,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:16:53,376 INFO L87 Difference]: Start difference. First operand 165 states and 196 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-27 06:16:53,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:16:53,513 INFO L93 Difference]: Finished difference Result 174 states and 205 transitions. [2021-08-27 06:16:53,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:16:53,517 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 58 [2021-08-27 06:16:53,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:16:53,518 INFO L225 Difference]: With dead ends: 174 [2021-08-27 06:16:53,518 INFO L226 Difference]: Without dead ends: 174 [2021-08-27 06:16:53,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 88.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-27 06:16:53,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-08-27 06:16:53,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 167. [2021-08-27 06:16:53,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 128 states have (on average 1.296875) internal successors, (166), 142 states have internal predecessors, (166), 12 states have call successors, (12), 8 states have call predecessors, (12), 10 states have return successors, (20), 16 states have call predecessors, (20), 11 states have call successors, (20) [2021-08-27 06:16:53,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 198 transitions. [2021-08-27 06:16:53,522 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 198 transitions. Word has length 58 [2021-08-27 06:16:53,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:16:53,522 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 198 transitions. [2021-08-27 06:16:53,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-27 06:16:53,523 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 198 transitions. [2021-08-27 06:16:53,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-27 06:16:53,523 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:16:53,523 INFO L512 BasicCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:16:53,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-08-27 06:16:53,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:16:53,732 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:16:53,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:16:53,732 INFO L82 PathProgramCache]: Analyzing trace with hash 612578384, now seen corresponding path program 3 times [2021-08-27 06:16:53,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:16:53,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157407796] [2021-08-27 06:16:53,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 06:16:53,732 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:16:53,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:16:53,733 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:16:53,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-08-27 06:16:54,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-08-27 06:16:54,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:16:54,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-27 06:16:54,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:16:55,004 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 06:16:57,974 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 41 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:16:57,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:17:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:17:13,135 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:17:13,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157407796] [2021-08-27 06:17:13,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157407796] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:17:13,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:17:13,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 43 [2021-08-27 06:17:13,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192482053] [2021-08-27 06:17:13,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-08-27 06:17:13,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:17:13,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-08-27 06:17:13,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=1404, Unknown=0, NotChecked=0, Total=1806 [2021-08-27 06:17:13,138 INFO L87 Difference]: Start difference. First operand 167 states and 198 transitions. Second operand has 43 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 41 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:17:24,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:17:24,134 INFO L93 Difference]: Finished difference Result 153 states and 179 transitions. [2021-08-27 06:17:24,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-27 06:17:24,137 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 41 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2021-08-27 06:17:24,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:17:24,138 INFO L225 Difference]: With dead ends: 153 [2021-08-27 06:17:24,138 INFO L226 Difference]: Without dead ends: 153 [2021-08-27 06:17:24,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 15669.0ms TimeCoverageRelationStatistics Valid=444, Invalid=1536, Unknown=0, NotChecked=0, Total=1980 [2021-08-27 06:17:24,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-08-27 06:17:24,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-08-27 06:17:24,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 115 states have (on average 1.2782608695652173) internal successors, (147), 128 states have internal predecessors, (147), 12 states have call successors, (12), 8 states have call predecessors, (12), 10 states have return successors, (20), 16 states have call predecessors, (20), 11 states have call successors, (20) [2021-08-27 06:17:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 179 transitions. [2021-08-27 06:17:24,142 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 179 transitions. Word has length 58 [2021-08-27 06:17:24,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:17:24,142 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 179 transitions. [2021-08-27 06:17:24,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 41 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:17:24,142 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 179 transitions. [2021-08-27 06:17:24,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-08-27 06:17:24,143 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:17:24,143 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:17:24,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-08-27 06:17:24,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:17:24,352 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting free_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:17:24,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:17:24,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1452868472, now seen corresponding path program 1 times [2021-08-27 06:17:24,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:17:24,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594857757] [2021-08-27 06:17:24,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:17:24,353 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:17:24,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:17:24,353 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:17:24,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-08-27 06:17:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:17:25,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 06:17:25,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:17:25,630 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 06:17:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:17:26,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:17:26,725 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:17:26,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594857757] [2021-08-27 06:17:26,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 06:17:26,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [648153778] [2021-08-27 06:17:26,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:17:26,726 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-27 06:17:26,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-27 06:17:26,731 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-27 06:17:26,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-08-27 06:17:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:17:28,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 06:17:28,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:17:28,286 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 06:17:28,773 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:17:28,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:17:29,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 06:17:29,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33787839] [2021-08-27 06:17:29,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:17:29,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 06:17:29,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:17:29,251 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 06:17:29,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-27 06:17:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:17:30,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 06:17:30,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:17:30,718 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 06:17:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:17:31,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:17:31,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 06:17:31,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:17:31,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-27 06:17:31,679 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-27 06:17:31,679 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-27 06:17:31,682 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err0REQUIRES_VIOLATION [2021-08-27 06:17:31,683 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-08-27 06:17:31,683 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-08-27 06:17:31,683 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-08-27 06:17:31,683 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-08-27 06:17:31,683 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-08-27 06:17:31,683 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-08-27 06:17:31,684 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-08-27 06:17:31,684 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-08-27 06:17:31,684 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-08-27 06:17:31,684 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-08-27 06:17:31,684 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-08-27 06:17:31,684 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-08-27 06:17:31,684 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-08-27 06:17:31,684 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-08-27 06:17:31,684 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-08-27 06:17:31,684 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-08-27 06:17:31,684 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-08-27 06:17:31,684 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-08-27 06:17:31,684 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-08-27 06:17:31,684 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-08-27 06:17:31,684 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-08-27 06:17:31,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-08-27 06:17:31,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-08-27 06:17:31,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-08-27 06:17:31,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-08-27 06:17:31,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-08-27 06:17:31,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-08-27 06:17:31,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-08-27 06:17:31,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-08-27 06:17:31,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-08-27 06:17:31,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-08-27 06:17:31,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-08-27 06:17:31,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-08-27 06:17:31,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-08-27 06:17:31,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-08-27 06:17:31,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-08-27 06:17:31,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-08-27 06:17:31,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-08-27 06:17:31,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err0REQUIRES_VIOLATION [2021-08-27 06:17:31,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err1REQUIRES_VIOLATION [2021-08-27 06:17:31,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err2REQUIRES_VIOLATION [2021-08-27 06:17:31,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err3REQUIRES_VIOLATION [2021-08-27 06:17:31,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err7REQUIRES_VIOLATION [2021-08-27 06:17:31,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err8REQUIRES_VIOLATION [2021-08-27 06:17:31,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-08-27 06:17:31,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-08-27 06:17:31,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-08-27 06:17:31,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-08-27 06:17:31,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 06:17:31,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-08-27 06:17:31,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-08-27 06:17:31,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-08-27 06:17:31,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-08-27 06:17:31,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-08-27 06:17:31,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-08-27 06:17:31,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-08-27 06:17:31,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-08-27 06:17:31,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-08-27 06:17:31,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-08-27 06:17:31,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-08-27 06:17:31,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-08-27 06:17:31,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-08-27 06:17:31,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-08-27 06:17:31,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-08-27 06:17:31,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-08-27 06:17:31,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err1REQUIRES_VIOLATION [2021-08-27 06:17:31,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,689 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,689 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION [2021-08-27 06:17:31,689 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION [2021-08-27 06:17:31,689 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,689 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,689 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:17:31,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-08-27 06:17:31,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-08-27 06:17:32,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-08-27 06:17:32,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 06:17:32,302 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 06:17:32,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:17:32 BoogieIcfgContainer [2021-08-27 06:17:32,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 06:17:32,310 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 06:17:32,310 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 06:17:32,310 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 06:17:32,311 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:11:38" (3/4) ... [2021-08-27 06:17:32,312 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 06:17:32,312 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 06:17:32,313 INFO L168 Benchmark]: Toolchain (without parser) took 355628.17 ms. Allocated memory was 67.1 MB in the beginning and 174.1 MB in the end (delta: 107.0 MB). Free memory was 45.8 MB in the beginning and 87.3 MB in the end (delta: -41.6 MB). Peak memory consumption was 64.5 MB. Max. memory is 16.1 GB. [2021-08-27 06:17:32,313 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 67.1 MB. Free memory was 47.9 MB in the beginning and 47.8 MB in the end (delta: 32.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:17:32,313 INFO L168 Benchmark]: CACSL2BoogieTranslator took 491.37 ms. Allocated memory is still 67.1 MB. Free memory was 45.5 MB in the beginning and 31.2 MB in the end (delta: 14.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 06:17:32,313 INFO L168 Benchmark]: Boogie Preprocessor took 85.87 ms. Allocated memory is still 67.1 MB. Free memory was 30.9 MB in the beginning and 45.7 MB in the end (delta: -14.8 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-08-27 06:17:32,314 INFO L168 Benchmark]: RCFGBuilder took 1361.09 ms. Allocated memory was 67.1 MB in the beginning and 98.6 MB in the end (delta: 31.5 MB). Free memory was 45.4 MB in the beginning and 49.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 38.7 MB. Max. memory is 16.1 GB. [2021-08-27 06:17:32,314 INFO L168 Benchmark]: TraceAbstraction took 353683.98 ms. Allocated memory was 98.6 MB in the beginning and 174.1 MB in the end (delta: 75.5 MB). Free memory was 48.8 MB in the beginning and 87.3 MB in the end (delta: -38.6 MB). Peak memory consumption was 37.8 MB. Max. memory is 16.1 GB. [2021-08-27 06:17:32,314 INFO L168 Benchmark]: Witness Printer took 2.14 ms. Allocated memory is still 174.1 MB. Free memory is still 87.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:17:32,315 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 67.1 MB. Free memory was 47.9 MB in the beginning and 47.8 MB in the end (delta: 32.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 491.37 ms. Allocated memory is still 67.1 MB. Free memory was 45.5 MB in the beginning and 31.2 MB in the end (delta: 14.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.87 ms. Allocated memory is still 67.1 MB. Free memory was 30.9 MB in the beginning and 45.7 MB in the end (delta: -14.8 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1361.09 ms. Allocated memory was 67.1 MB in the beginning and 98.6 MB in the end (delta: 31.5 MB). Free memory was 45.4 MB in the beginning and 49.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 38.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 353683.98 ms. Allocated memory was 98.6 MB in the beginning and 174.1 MB in the end (delta: 75.5 MB). Free memory was 48.8 MB in the beginning and 87.3 MB in the end (delta: -38.6 MB). Peak memory consumption was 37.8 MB. Max. memory is 16.1 GB. * Witness Printer took 2.14 ms. Allocated memory is still 174.1 MB. Free memory is still 87.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * 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: 780]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L797] CALL entry_point() [L784] int i; [L785] int len = 10; [L786] CALL, EXPR ldv_malloc(sizeof(struct A17*)*len) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L786] RET, EXPR ldv_malloc(sizeof(struct A17*)*len) [L786] struct A17 **array = (struct A17 **)ldv_malloc(sizeof(struct A17*)*len); [L787] COND TRUE \read(**array) [L788] i=0 [L788] COND TRUE i=0) [L775] return - -3; [L791] RET alloc_17(array, len) [L792] CALL free_17(array, len) [L778] int i; [L779] i=0 [L779] COND TRUE i