./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg --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 14e3e63e231fa0c862b0912d52fb4325a0198eb4d9a43387e9996f85700980cb ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg --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 14e3e63e231fa0c862b0912d52fb4325a0198eb4d9a43387e9996f85700980cb ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:19:06,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:19:06,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:19:06,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:19:06,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:19:06,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:19:06,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:19:06,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:19:06,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:19:06,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:19:06,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:19:06,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:19:06,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:19:06,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:19:06,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:19:06,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:19:06,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:19:06,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:19:06,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:19:06,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:19:06,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:19:06,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:19:06,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:19:06,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:19:06,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:19:06,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:19:06,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:19:06,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:19:06,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:19:06,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:19:06,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:19:06,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:19:06,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:19:06,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:19:06,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:19:06,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:19:06,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:19:06,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:19:06,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:19:06,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:19:06,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:19:06,908 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:19:06,932 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:19:06,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:19:06,933 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:19:06,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:19:06,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:19:06,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:19:06,935 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:19:06,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:19:06,935 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:19:06,936 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:19:06,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:19:06,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:19:06,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:19:06,937 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:19:06,937 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:19:06,937 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:19:06,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:19:06,938 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:19:06,938 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:19:06,938 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:19:06,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:19:06,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:19:06,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:19:06,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:19:06,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:19:06,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:19:06,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:19:06,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:19:06,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:19:06,941 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14e3e63e231fa0c862b0912d52fb4325a0198eb4d9a43387e9996f85700980cb [2021-10-28 09:19:07,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:19:07,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:19:07,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:19:07,286 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:19:07,289 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:19:07,290 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-2.i [2021-10-28 09:19:07,372 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/data/b77e0b45a/7e20c48ee5a949f29377c405dab63b00/FLAG9fc1402bc [2021-10-28 09:19:08,087 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:19:08,088 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-2.i [2021-10-28 09:19:08,113 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/data/b77e0b45a/7e20c48ee5a949f29377c405dab63b00/FLAG9fc1402bc [2021-10-28 09:19:08,278 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/data/b77e0b45a/7e20c48ee5a949f29377c405dab63b00 [2021-10-28 09:19:08,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:19:08,294 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:19:08,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:19:08,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:19:08,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:19:08,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:19:08" (1/1) ... [2021-10-28 09:19:08,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b26487e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:08, skipping insertion in model container [2021-10-28 09:19:08,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:19:08" (1/1) ... [2021-10-28 09:19:08,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:19:08,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:19:08,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:19:08,935 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) [2021-10-28 09:19:08,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5685560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:08, skipping insertion in model container [2021-10-28 09:19:08,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:19:08,936 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-28 09:19:08,940 INFO L168 Benchmark]: Toolchain (without parser) took 644.57 ms. Allocated memory is still 100.7 MB. Free memory was 61.6 MB in the beginning and 70.6 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:19:08,941 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 100.7 MB. Free memory is still 79.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:19:08,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.65 ms. Allocated memory is still 100.7 MB. Free memory was 61.4 MB in the beginning and 70.6 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:19:08,946 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 100.7 MB. Free memory is still 79.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 635.65 ms. Allocated memory is still 100.7 MB. Free memory was 61.4 MB in the beginning and 70.6 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 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-b2eff8b [2021-10-28 09:19:11,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:19:11,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:19:11,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:19:11,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:19:11,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:19:11,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:19:11,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:19:11,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:19:11,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:19:11,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:19:11,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:19:11,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:19:11,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:19:11,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:19:11,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:19:11,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:19:11,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:19:11,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:19:11,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:19:11,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:19:11,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:19:11,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:19:11,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:19:11,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:19:11,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:19:11,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:19:11,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:19:11,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:19:11,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:19:11,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:19:11,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:19:11,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:19:11,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:19:11,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:19:11,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:19:11,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:19:11,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:19:11,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:19:11,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:19:11,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:19:11,887 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 09:19:11,917 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:19:11,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:19:11,918 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:19:11,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:19:11,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:19:11,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:19:11,920 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:19:11,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:19:11,921 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:19:11,921 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:19:11,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:19:11,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:19:11,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:19:11,922 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:19:11,923 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:19:11,923 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:19:11,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:19:11,923 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:19:11,924 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:19:11,924 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:19:11,924 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:19:11,925 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:19:11,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:19:11,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:19:11,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:19:11,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:19:11,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:19:11,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:19:11,927 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:19:11,927 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:19:11,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:19:11,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:19:11,928 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14e3e63e231fa0c862b0912d52fb4325a0198eb4d9a43387e9996f85700980cb [2021-10-28 09:19:12,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:19:12,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:19:12,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:19:12,484 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:19:12,485 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:19:12,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-2.i [2021-10-28 09:19:12,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/data/e83405980/318ab977ab224984a6a3a88215f8a224/FLAG3e4263f5f [2021-10-28 09:19:13,311 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:19:13,313 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-2.i [2021-10-28 09:19:13,342 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/data/e83405980/318ab977ab224984a6a3a88215f8a224/FLAG3e4263f5f [2021-10-28 09:19:13,516 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/data/e83405980/318ab977ab224984a6a3a88215f8a224 [2021-10-28 09:19:13,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:19:13,524 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:19:13,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:19:13,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:19:13,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:19:13,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:19:13" (1/1) ... [2021-10-28 09:19:13,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9f8cce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:13, skipping insertion in model container [2021-10-28 09:19:13,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:19:13" (1/1) ... [2021-10-28 09:19:13,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:19:13,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:19:14,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:19:14,333 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-28 09:19:14,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:19:14,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:19:14,425 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:19:14,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:19:14,562 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:19:14,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:14 WrapperNode [2021-10-28 09:19:14,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:19:14,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:19:14,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:19:14,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:19:14,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:14" (1/1) ... [2021-10-28 09:19:14,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:14" (1/1) ... [2021-10-28 09:19:14,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:14" (1/1) ... [2021-10-28 09:19:14,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:14" (1/1) ... [2021-10-28 09:19:14,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:14" (1/1) ... [2021-10-28 09:19:14,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:14" (1/1) ... [2021-10-28 09:19:14,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:14" (1/1) ... [2021-10-28 09:19:14,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:19:14,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:19:14,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:19:14,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:19:14,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:14" (1/1) ... [2021-10-28 09:19:14,736 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:19:14,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:19:14,779 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:19:14,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:19:14,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:19:14,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:19:14,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-10-28 09:19:14,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:19:14,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:19:14,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:19:14,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 09:19:14,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 09:19:14,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 09:19:14,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-10-28 09:19:14,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-10-28 09:19:14,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-10-28 09:19:14,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-10-28 09:19:14,826 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-10-28 09:19:14,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-10-28 09:19:14,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-10-28 09:19:14,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-10-28 09:19:14,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-10-28 09:19:14,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-10-28 09:19:14,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-10-28 09:19:14,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-10-28 09:19:14,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-10-28 09:19:14,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-10-28 09:19:14,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-10-28 09:19:14,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-10-28 09:19:14,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-10-28 09:19:14,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-10-28 09:19:14,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-10-28 09:19:14,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-10-28 09:19:14,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-10-28 09:19:14,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-10-28 09:19:14,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-10-28 09:19:14,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-10-28 09:19:14,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-10-28 09:19:14,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-10-28 09:19:14,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-10-28 09:19:14,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-10-28 09:19:14,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-10-28 09:19:14,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-10-28 09:19:14,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-10-28 09:19:14,832 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-28 09:19:14,832 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-28 09:19:14,832 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-10-28 09:19:14,832 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:19:14,833 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-28 09:19:14,833 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-10-28 09:19:14,833 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-10-28 09:19:14,833 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:19:14,836 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:19:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:19:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:19:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:19:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:19:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:19:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:19:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:19:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:19:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:19:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:19:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:19:14,846 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:19:14,846 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:19:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:19:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:19:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:19:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 09:19:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 09:19:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 09:19:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:19:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:19:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:19:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:19:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:19:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:19:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:19:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:19:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:19:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:19:14,854 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:19:14,855 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:19:14,855 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:19:14,856 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:19:14,856 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:19:14,856 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:19:14,856 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:19:14,857 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:19:14,857 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:19:14,857 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:19:14,857 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:19:14,857 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:19:14,858 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:19:14,858 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:19:14,858 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:19:14,858 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:19:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:19:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:19:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:19:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:19:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:19:14,860 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:19:14,860 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:19:14,861 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:19:14,861 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:19:14,861 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:19:14,861 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:19:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:19:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:19:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:19:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:19:14,863 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:19:14,863 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:19:14,863 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:19:14,863 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:19:14,864 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:19:14,864 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:19:14,864 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:19:14,864 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:19:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:19:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:19:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:19:14,866 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:19:14,866 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:19:14,866 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:19:14,867 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:19:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:19:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:19:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:19:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:19:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:19:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:19:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:19:14,871 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:19:14,871 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:19:14,873 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:19:14,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:19:14,874 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:19:14,874 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:19:14,875 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:19:14,875 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:19:14,875 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:19:14,875 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:19:14,875 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:19:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:19:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:19:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:19:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:19:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:19:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:19:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:19:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:19:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:19:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:19:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:19:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:19:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-10-28 09:19:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:19:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-10-28 09:19:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-10-28 09:19:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 09:19:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 09:19:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-10-28 09:19:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:19:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-10-28 09:19:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-10-28 09:19:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-10-28 09:19:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:19:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-10-28 09:19:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-10-28 09:19:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-10-28 09:19:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:19:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-10-28 09:19:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-10-28 09:19:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-10-28 09:19:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-10-28 09:19:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-10-28 09:19:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-10-28 09:19:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:19:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-10-28 09:19:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-10-28 09:19:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-10-28 09:19:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-10-28 09:19:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-10-28 09:19:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 09:19:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 09:19:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-10-28 09:19:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-10-28 09:19:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-10-28 09:19:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-10-28 09:19:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-10-28 09:19:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-10-28 09:19:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-10-28 09:19:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-10-28 09:19:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-10-28 09:19:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-10-28 09:19:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-10-28 09:19:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-10-28 09:19:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-10-28 09:19:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-10-28 09:19:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-28 09:19:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-28 09:19:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-28 09:19:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-10-28 09:19:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:19:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:19:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:19:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 09:19:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:19:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:19:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-28 09:19:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-28 09:19:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-10-28 09:19:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-10-28 09:19:15,625 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 09:19:16,097 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 09:19:16,551 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:19:16,555 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 09:19:16,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:16 BoogieIcfgContainer [2021-10-28 09:19:16,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:19:16,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:19:16,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:19:16,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:19:16,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:19:13" (1/3) ... [2021-10-28 09:19:16,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dad8a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:19:16, skipping insertion in model container [2021-10-28 09:19:16,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:14" (2/3) ... [2021-10-28 09:19:16,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dad8a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:19:16, skipping insertion in model container [2021-10-28 09:19:16,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:16" (3/3) ... [2021-10-28 09:19:16,574 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test22_3-2.i [2021-10-28 09:19:16,580 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:19:16,580 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-10-28 09:19:16,631 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:19:16,638 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:19:16,639 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-10-28 09:19:16,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 113 states have internal predecessors, (122), 20 states have call successors, (20), 18 states have call predecessors, (20), 18 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-10-28 09:19:16,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:19:16,668 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:16,669 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:16,669 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_kobject_createErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:19:16,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:16,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1484999723, now seen corresponding path program 1 times [2021-10-28 09:19:16,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:16,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503483215] [2021-10-28 09:19:16,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:16,692 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:16,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:16,696 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:16,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:19:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:16,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:19:16,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:17,068 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 [2021-10-28 09:19:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:17,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:17,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:17,328 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:17,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503483215] [2021-10-28 09:19:17,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503483215] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:17,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:17,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 09:19:17,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842805915] [2021-10-28 09:19:17,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:19:17,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:17,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:19:17,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:19:17,366 INFO L87 Difference]: Start difference. First operand has 151 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 113 states have internal predecessors, (122), 20 states have call successors, (20), 18 states have call predecessors, (20), 18 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:19:17,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:17,728 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2021-10-28 09:19:17,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:19:17,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-10-28 09:19:17,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:17,748 INFO L225 Difference]: With dead ends: 133 [2021-10-28 09:19:17,749 INFO L226 Difference]: Without dead ends: 130 [2021-10-28 09:19:17,750 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:19:17,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-28 09:19:17,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 124. [2021-10-28 09:19:17,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 69 states have (on average 1.4057971014492754) internal successors, (97), 90 states have internal predecessors, (97), 19 states have call successors, (19), 17 states have call predecessors, (19), 17 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2021-10-28 09:19:17,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 135 transitions. [2021-10-28 09:19:17,851 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 135 transitions. Word has length 17 [2021-10-28 09:19:17,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:17,852 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 135 transitions. [2021-10-28 09:19:17,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:19:17,852 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 135 transitions. [2021-10-28 09:19:17,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:19:17,854 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:17,854 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:17,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:18,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:18,069 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_kobject_createErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:19:18,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:18,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1484999724, now seen corresponding path program 1 times [2021-10-28 09:19:18,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:18,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764721568] [2021-10-28 09:19:18,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:18,071 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:18,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:18,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:18,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:19:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:18,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:19:18,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:18,346 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 [2021-10-28 09:19:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:18,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:19,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:19,048 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:19,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764721568] [2021-10-28 09:19:19,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764721568] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:19,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:19,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-28 09:19:19,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687700005] [2021-10-28 09:19:19,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:19:19,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:19,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:19:19,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:19:19,059 INFO L87 Difference]: Start difference. First operand 124 states and 135 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:19:19,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:19,683 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2021-10-28 09:19:19,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:19:19,687 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2021-10-28 09:19:19,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:19,689 INFO L225 Difference]: With dead ends: 129 [2021-10-28 09:19:19,689 INFO L226 Difference]: Without dead ends: 129 [2021-10-28 09:19:19,690 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:19:19,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-28 09:19:19,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 124. [2021-10-28 09:19:19,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 68 states have (on average 1.411764705882353) internal successors, (96), 90 states have internal predecessors, (96), 19 states have call successors, (19), 17 states have call predecessors, (19), 17 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2021-10-28 09:19:19,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2021-10-28 09:19:19,719 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 17 [2021-10-28 09:19:19,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:19,720 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2021-10-28 09:19:19,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:19:19,720 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2021-10-28 09:19:19,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:19:19,722 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:19,722 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:19,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:19,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:19,937 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_kobject_createErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:19:19,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:19,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1513628874, now seen corresponding path program 1 times [2021-10-28 09:19:19,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:19,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985898063] [2021-10-28 09:19:19,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:19,939 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:19,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:19,942 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:19,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:19:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:20,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:19:20,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:20,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:20,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:20,361 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:20,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985898063] [2021-10-28 09:19:20,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985898063] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:20,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:20,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 09:19:20,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840113523] [2021-10-28 09:19:20,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:19:20,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:20,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:19:20,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:19:20,369 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:19:20,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:20,407 INFO L93 Difference]: Finished difference Result 123 states and 131 transitions. [2021-10-28 09:19:20,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:19:20,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-10-28 09:19:20,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:20,415 INFO L225 Difference]: With dead ends: 123 [2021-10-28 09:19:20,415 INFO L226 Difference]: Without dead ends: 123 [2021-10-28 09:19:20,415 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:19:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-28 09:19:20,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2021-10-28 09:19:20,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 87 states have internal predecessors, (93), 18 states have call successors, (18), 17 states have call predecessors, (18), 17 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2021-10-28 09:19:20,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 129 transitions. [2021-10-28 09:19:20,461 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 129 transitions. Word has length 17 [2021-10-28 09:19:20,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:20,461 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 129 transitions. [2021-10-28 09:19:20,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:19:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 129 transitions. [2021-10-28 09:19:20,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 09:19:20,467 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:20,468 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:20,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:20,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:20,681 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:19:20,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:20,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1578542280, now seen corresponding path program 1 times [2021-10-28 09:19:20,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:20,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933493327] [2021-10-28 09:19:20,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:20,683 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:20,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:20,685 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:20,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:19:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:20,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:19:20,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:21,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:21,197 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:21,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933493327] [2021-10-28 09:19:21,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933493327] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:21,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:21,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 09:19:21,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734838903] [2021-10-28 09:19:21,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:19:21,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:21,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:19:21,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:19:21,206 INFO L87 Difference]: Start difference. First operand 121 states and 129 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:19:21,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:21,240 INFO L93 Difference]: Finished difference Result 123 states and 130 transitions. [2021-10-28 09:19:21,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:19:21,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2021-10-28 09:19:21,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:21,248 INFO L225 Difference]: With dead ends: 123 [2021-10-28 09:19:21,248 INFO L226 Difference]: Without dead ends: 123 [2021-10-28 09:19:21,249 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:19:21,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-28 09:19:21,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2021-10-28 09:19:21,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 67 states have (on average 1.373134328358209) internal successors, (92), 87 states have internal predecessors, (92), 18 states have call successors, (18), 17 states have call predecessors, (18), 17 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2021-10-28 09:19:21,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 128 transitions. [2021-10-28 09:19:21,265 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 128 transitions. Word has length 29 [2021-10-28 09:19:21,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:21,266 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 128 transitions. [2021-10-28 09:19:21,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:19:21,267 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 128 transitions. [2021-10-28 09:19:21,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 09:19:21,269 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:21,269 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:21,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:21,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:21,482 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:19:21,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:21,483 INFO L85 PathProgramCache]: Analyzing trace with hash 581469927, now seen corresponding path program 1 times [2021-10-28 09:19:21,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:21,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013617447] [2021-10-28 09:19:21,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:21,484 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:21,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:21,486 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:21,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:19:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:21,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:19:21,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:21,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:21,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:22,158 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:22,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013617447] [2021-10-28 09:19:22,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013617447] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:22,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:22,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-28 09:19:22,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811824453] [2021-10-28 09:19:22,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:19:22,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:22,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:19:22,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:19:22,161 INFO L87 Difference]: Start difference. First operand 121 states and 128 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:19:22,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:22,231 INFO L93 Difference]: Finished difference Result 134 states and 143 transitions. [2021-10-28 09:19:22,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:19:22,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2021-10-28 09:19:22,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:22,234 INFO L225 Difference]: With dead ends: 134 [2021-10-28 09:19:22,234 INFO L226 Difference]: Without dead ends: 134 [2021-10-28 09:19:22,234 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:19:22,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-28 09:19:22,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2021-10-28 09:19:22,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 72 states have (on average 1.3472222222222223) internal successors, (97), 93 states have internal predecessors, (97), 20 states have call successors, (20), 18 states have call predecessors, (20), 19 states have return successors, (21), 20 states have call predecessors, (21), 19 states have call successors, (21) [2021-10-28 09:19:22,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2021-10-28 09:19:22,243 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 29 [2021-10-28 09:19:22,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:22,243 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2021-10-28 09:19:22,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:19:22,244 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2021-10-28 09:19:22,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 09:19:22,245 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:22,246 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:22,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:22,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:22,462 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_kref_initErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:19:22,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:22,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1899216601, now seen corresponding path program 1 times [2021-10-28 09:19:22,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:22,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935775470] [2021-10-28 09:19:22,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:22,464 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:22,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:22,466 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:22,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 09:19:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:22,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:19:22,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:22,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:22,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:22,987 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:22,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935775470] [2021-10-28 09:19:22,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935775470] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:22,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:22,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-28 09:19:22,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523114990] [2021-10-28 09:19:22,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:19:22,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:22,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:19:22,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:19:22,992 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:19:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:23,043 INFO L93 Difference]: Finished difference Result 136 states and 144 transitions. [2021-10-28 09:19:23,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:19:23,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2021-10-28 09:19:23,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:23,051 INFO L225 Difference]: With dead ends: 136 [2021-10-28 09:19:23,051 INFO L226 Difference]: Without dead ends: 132 [2021-10-28 09:19:23,051 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:19:23,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-28 09:19:23,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-10-28 09:19:23,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 74 states have (on average 1.337837837837838) internal successors, (99), 95 states have internal predecessors, (99), 20 states have call successors, (20), 18 states have call predecessors, (20), 19 states have return successors, (21), 20 states have call predecessors, (21), 19 states have call successors, (21) [2021-10-28 09:19:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 140 transitions. [2021-10-28 09:19:23,060 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 140 transitions. Word has length 32 [2021-10-28 09:19:23,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:23,060 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 140 transitions. [2021-10-28 09:19:23,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:19:23,061 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 140 transitions. [2021-10-28 09:19:23,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 09:19:23,063 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:23,063 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:23,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:23,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:23,279 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_kref_initErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:19:23,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:23,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2034413241, now seen corresponding path program 1 times [2021-10-28 09:19:23,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:23,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481355170] [2021-10-28 09:19:23,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:23,280 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:23,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:23,281 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:23,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 09:19:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:23,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:19:23,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:23,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:23,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:23,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:23,964 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:23,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481355170] [2021-10-28 09:19:23,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481355170] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 09:19:23,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:19:23,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-28 09:19:23,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84920661] [2021-10-28 09:19:23,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:19:23,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:23,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:19:23,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:19:23,967 INFO L87 Difference]: Start difference. First operand 132 states and 140 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:19:24,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:24,184 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2021-10-28 09:19:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:19:24,185 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2021-10-28 09:19:24,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:24,189 INFO L225 Difference]: With dead ends: 140 [2021-10-28 09:19:24,189 INFO L226 Difference]: Without dead ends: 136 [2021-10-28 09:19:24,190 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:19:24,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-28 09:19:24,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-10-28 09:19:24,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 78 states have (on average 1.3205128205128205) internal successors, (103), 99 states have internal predecessors, (103), 20 states have call successors, (20), 18 states have call predecessors, (20), 19 states have return successors, (21), 20 states have call predecessors, (21), 19 states have call successors, (21) [2021-10-28 09:19:24,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 144 transitions. [2021-10-28 09:19:24,198 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 144 transitions. Word has length 34 [2021-10-28 09:19:24,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:24,198 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 144 transitions. [2021-10-28 09:19:24,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:19:24,199 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 144 transitions. [2021-10-28 09:19:24,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 09:19:24,201 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:24,201 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:24,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:24,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:24,430 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:19:24,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:24,431 INFO L85 PathProgramCache]: Analyzing trace with hash 76391075, now seen corresponding path program 1 times [2021-10-28 09:19:24,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:24,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381480567] [2021-10-28 09:19:24,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:24,431 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:24,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:24,432 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:24,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 09:19:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:24,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:19:24,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 09:19:24,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:25,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 09:19:25,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:25,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381480567] [2021-10-28 09:19:25,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381480567] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:25,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:25,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:19:25,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20064032] [2021-10-28 09:19:25,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:19:25,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:25,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:19:25,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:19:25,133 INFO L87 Difference]: Start difference. First operand 136 states and 144 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-28 09:19:25,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:25,295 INFO L93 Difference]: Finished difference Result 147 states and 155 transitions. [2021-10-28 09:19:25,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:19:25,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 32 [2021-10-28 09:19:25,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:25,297 INFO L225 Difference]: With dead ends: 147 [2021-10-28 09:19:25,297 INFO L226 Difference]: Without dead ends: 131 [2021-10-28 09:19:25,297 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:19:25,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-28 09:19:25,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 123. [2021-10-28 09:19:25,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 90 states have internal predecessors, (94), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-10-28 09:19:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 129 transitions. [2021-10-28 09:19:25,304 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 129 transitions. Word has length 32 [2021-10-28 09:19:25,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:25,304 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 129 transitions. [2021-10-28 09:19:25,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-28 09:19:25,305 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 129 transitions. [2021-10-28 09:19:25,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 09:19:25,306 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:25,306 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:25,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:25,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:25,520 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_kref_initErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:19:25,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:25,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1051272825, now seen corresponding path program 2 times [2021-10-28 09:19:25,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:25,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20855898] [2021-10-28 09:19:25,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:19:25,521 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:25,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:25,522 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:25,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 09:19:25,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:19:25,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:19:25,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:19:25,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:25,818 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 [2021-10-28 09:19:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-28 09:19:26,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-28 09:19:26,369 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:26,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20855898] [2021-10-28 09:19:26,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20855898] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:26,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:26,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 11 [2021-10-28 09:19:26,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563134491] [2021-10-28 09:19:26,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:19:26,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:26,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:19:26,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:19:26,372 INFO L87 Difference]: Start difference. First operand 123 states and 129 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 09:19:27,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:27,425 INFO L93 Difference]: Finished difference Result 146 states and 160 transitions. [2021-10-28 09:19:27,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:19:27,426 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2021-10-28 09:19:27,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:27,428 INFO L225 Difference]: With dead ends: 146 [2021-10-28 09:19:27,428 INFO L226 Difference]: Without dead ends: 146 [2021-10-28 09:19:27,429 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 56 SyntacticMatches, 9 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:19:27,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-28 09:19:27,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 122. [2021-10-28 09:19:27,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 89 states have internal predecessors, (93), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-10-28 09:19:27,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 128 transitions. [2021-10-28 09:19:27,438 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 128 transitions. Word has length 38 [2021-10-28 09:19:27,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:27,438 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 128 transitions. [2021-10-28 09:19:27,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 09:19:27,439 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 128 transitions. [2021-10-28 09:19:27,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 09:19:27,441 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:27,441 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:27,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:27,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:27,656 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_kref_initErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:19:27,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:27,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1051272824, now seen corresponding path program 1 times [2021-10-28 09:19:27,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:27,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311167950] [2021-10-28 09:19:27,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:27,658 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:27,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:27,660 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:27,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 09:19:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:27,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:19:27,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:28,192 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:28,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:28,809 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:28,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311167950] [2021-10-28 09:19:28,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311167950] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 09:19:28,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:19:28,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-28 09:19:28,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317733318] [2021-10-28 09:19:28,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-28 09:19:28,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:28,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 09:19:28,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:19:28,812 INFO L87 Difference]: Start difference. First operand 122 states and 128 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:19:29,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:29,712 INFO L93 Difference]: Finished difference Result 134 states and 146 transitions. [2021-10-28 09:19:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:19:29,722 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2021-10-28 09:19:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:29,724 INFO L225 Difference]: With dead ends: 134 [2021-10-28 09:19:29,724 INFO L226 Difference]: Without dead ends: 130 [2021-10-28 09:19:29,725 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2021-10-28 09:19:29,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-28 09:19:29,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-10-28 09:19:29,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 78 states have (on average 1.294871794871795) internal successors, (101), 97 states have internal predecessors, (101), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-10-28 09:19:29,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 136 transitions. [2021-10-28 09:19:29,732 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 136 transitions. Word has length 38 [2021-10-28 09:19:29,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:29,732 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 136 transitions. [2021-10-28 09:19:29,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:19:29,733 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 136 transitions. [2021-10-28 09:19:29,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-28 09:19:29,734 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:29,735 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:29,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:29,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:29,946 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_kref_initErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:19:29,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:29,946 INFO L85 PathProgramCache]: Analyzing trace with hash -2061530616, now seen corresponding path program 2 times [2021-10-28 09:19:29,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:29,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248985268] [2021-10-28 09:19:29,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:19:29,947 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:29,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:29,948 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:29,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-28 09:19:30,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:19:30,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:19:30,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 09:19:30,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:30,346 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 [2021-10-28 09:19:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-10-28 09:19:30,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:32,351 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-10-28 09:19:32,352 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:32,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248985268] [2021-10-28 09:19:32,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248985268] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:32,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:32,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2021-10-28 09:19:32,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710867558] [2021-10-28 09:19:32,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 09:19:32,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:32,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 09:19:32,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:19:32,355 INFO L87 Difference]: Start difference. First operand 130 states and 136 transitions. Second operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 09:19:34,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:34,690 INFO L93 Difference]: Finished difference Result 129 states and 135 transitions. [2021-10-28 09:19:34,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:19:34,691 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 46 [2021-10-28 09:19:34,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:34,693 INFO L225 Difference]: With dead ends: 129 [2021-10-28 09:19:34,693 INFO L226 Difference]: Without dead ends: 129 [2021-10-28 09:19:34,694 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-10-28 09:19:34,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-28 09:19:34,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-10-28 09:19:34,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 96 states have internal predecessors, (100), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-10-28 09:19:34,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2021-10-28 09:19:34,699 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 46 [2021-10-28 09:19:34,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:34,700 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2021-10-28 09:19:34,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 09:19:34,701 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2021-10-28 09:19:34,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 09:19:34,702 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:34,702 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:34,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:34,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:34,914 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:19:34,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:34,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1631731192, now seen corresponding path program 1 times [2021-10-28 09:19:34,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:34,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651398484] [2021-10-28 09:19:34,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:34,915 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:34,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:34,916 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:34,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-28 09:19:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:35,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:19:35,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:35,688 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:35,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:37,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:37,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651398484] [2021-10-28 09:19:37,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651398484] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 09:19:37,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:19:37,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-10-28 09:19:37,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921911523] [2021-10-28 09:19:37,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-28 09:19:37,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:37,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-28 09:19:37,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2021-10-28 09:19:37,012 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-28 09:19:37,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:37,636 INFO L93 Difference]: Finished difference Result 135 states and 141 transitions. [2021-10-28 09:19:37,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 09:19:37,646 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2021-10-28 09:19:37,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:37,648 INFO L225 Difference]: With dead ends: 135 [2021-10-28 09:19:37,648 INFO L226 Difference]: Without dead ends: 131 [2021-10-28 09:19:37,649 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=250, Invalid=940, Unknown=0, NotChecked=0, Total=1190 [2021-10-28 09:19:37,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-28 09:19:37,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-10-28 09:19:37,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 80 states have (on average 1.275) internal successors, (102), 98 states have internal predecessors, (102), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-10-28 09:19:37,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 137 transitions. [2021-10-28 09:19:37,656 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 137 transitions. Word has length 51 [2021-10-28 09:19:37,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:37,656 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 137 transitions. [2021-10-28 09:19:37,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-28 09:19:37,657 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 137 transitions. [2021-10-28 09:19:37,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-28 09:19:37,658 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:37,658 INFO L513 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:37,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-28 09:19:37,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:37,873 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:19:37,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:37,873 INFO L85 PathProgramCache]: Analyzing trace with hash -346949160, now seen corresponding path program 2 times [2021-10-28 09:19:37,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:37,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837241982] [2021-10-28 09:19:37,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:19:37,875 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:37,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:37,876 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:37,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-28 09:19:38,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:19:38,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:19:38,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:19:38,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:38,352 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 [2021-10-28 09:19:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:19:38,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:38,992 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:19:38,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:38,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837241982] [2021-10-28 09:19:38,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837241982] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:38,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:38,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 11 [2021-10-28 09:19:38,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517331613] [2021-10-28 09:19:38,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:19:38,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:38,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:19:38,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:19:38,995 INFO L87 Difference]: Start difference. First operand 131 states and 137 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-10-28 09:19:39,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:39,872 INFO L93 Difference]: Finished difference Result 153 states and 167 transitions. [2021-10-28 09:19:39,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:19:39,872 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 53 [2021-10-28 09:19:39,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:39,874 INFO L225 Difference]: With dead ends: 153 [2021-10-28 09:19:39,874 INFO L226 Difference]: Without dead ends: 153 [2021-10-28 09:19:39,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 85 SyntacticMatches, 10 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:19:39,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-28 09:19:39,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 129. [2021-10-28 09:19:39,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 80 states have (on average 1.25) internal successors, (100), 96 states have internal predecessors, (100), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-10-28 09:19:39,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2021-10-28 09:19:39,884 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 53 [2021-10-28 09:19:39,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:39,885 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2021-10-28 09:19:39,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-10-28 09:19:39,885 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2021-10-28 09:19:39,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-28 09:19:39,886 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:39,886 INFO L513 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:39,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:40,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:40,102 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:19:40,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:40,102 INFO L85 PathProgramCache]: Analyzing trace with hash -346949159, now seen corresponding path program 1 times [2021-10-28 09:19:40,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:40,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624820938] [2021-10-28 09:19:40,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:40,103 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:40,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:40,104 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:40,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-28 09:19:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:40,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 09:19:40,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:40,616 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 [2021-10-28 09:19:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:19:41,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:19:42,548 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:42,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624820938] [2021-10-28 09:19:42,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624820938] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:42,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:42,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2021-10-28 09:19:42,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805442079] [2021-10-28 09:19:42,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 09:19:42,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:42,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 09:19:42,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:19:42,550 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand has 23 states, 22 states have (on average 2.0) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-28 09:19:45,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:45,202 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2021-10-28 09:19:45,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:19:45,203 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) Word has length 53 [2021-10-28 09:19:45,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:45,205 INFO L225 Difference]: With dead ends: 127 [2021-10-28 09:19:45,205 INFO L226 Difference]: Without dead ends: 127 [2021-10-28 09:19:45,206 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-10-28 09:19:45,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-28 09:19:45,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-10-28 09:19:45,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 80 states have (on average 1.225) internal successors, (98), 94 states have internal predecessors, (98), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-10-28 09:19:45,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 133 transitions. [2021-10-28 09:19:45,212 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 133 transitions. Word has length 53 [2021-10-28 09:19:45,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:45,212 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 133 transitions. [2021-10-28 09:19:45,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-28 09:19:45,213 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 133 transitions. [2021-10-28 09:19:45,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-28 09:19:45,214 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:45,215 INFO L513 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:45,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:45,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:45,430 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:19:45,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:45,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1487182461, now seen corresponding path program 1 times [2021-10-28 09:19:45,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:45,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071786665] [2021-10-28 09:19:45,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:45,431 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:45,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:45,432 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:45,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-28 09:19:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:45,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:19:45,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:19:46,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:46,321 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:19:46,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:46,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071786665] [2021-10-28 09:19:46,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071786665] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:46,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:46,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-10-28 09:19:46,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569750372] [2021-10-28 09:19:46,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:19:46,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:46,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:19:46,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:19:46,323 INFO L87 Difference]: Start difference. First operand 127 states and 133 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:19:46,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:46,372 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2021-10-28 09:19:46,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:19:46,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2021-10-28 09:19:46,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:46,377 INFO L225 Difference]: With dead ends: 129 [2021-10-28 09:19:46,377 INFO L226 Difference]: Without dead ends: 127 [2021-10-28 09:19:46,378 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:19:46,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-28 09:19:46,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-10-28 09:19:46,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 80 states have (on average 1.2125) internal successors, (97), 93 states have internal predecessors, (97), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-10-28 09:19:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 132 transitions. [2021-10-28 09:19:46,384 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 132 transitions. Word has length 58 [2021-10-28 09:19:46,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:46,392 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 132 transitions. [2021-10-28 09:19:46,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:19:46,393 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 132 transitions. [2021-10-28 09:19:46,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-28 09:19:46,394 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:46,394 INFO L513 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:46,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:46,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:46,608 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:19:46,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:46,609 INFO L85 PathProgramCache]: Analyzing trace with hash -537222574, now seen corresponding path program 1 times [2021-10-28 09:19:46,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:46,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776695000] [2021-10-28 09:19:46,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:46,609 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:46,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:46,610 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:46,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-28 09:19:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:47,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:19:47,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:47,354 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:19:47,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:47,790 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:19:47,790 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:47,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776695000] [2021-10-28 09:19:47,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776695000] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:47,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:47,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 11 [2021-10-28 09:19:47,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462829994] [2021-10-28 09:19:47,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:19:47,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:47,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:19:47,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:19:47,793 INFO L87 Difference]: Start difference. First operand 127 states and 132 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-10-28 09:19:47,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:47,897 INFO L93 Difference]: Finished difference Result 131 states and 135 transitions. [2021-10-28 09:19:47,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:19:47,899 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 63 [2021-10-28 09:19:47,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:47,900 INFO L225 Difference]: With dead ends: 131 [2021-10-28 09:19:47,900 INFO L226 Difference]: Without dead ends: 127 [2021-10-28 09:19:47,901 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:19:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-28 09:19:47,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-10-28 09:19:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 80 states have (on average 1.2) internal successors, (96), 92 states have internal predecessors, (96), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-10-28 09:19:47,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 131 transitions. [2021-10-28 09:19:47,912 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 131 transitions. Word has length 63 [2021-10-28 09:19:47,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:47,912 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 131 transitions. [2021-10-28 09:19:47,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-10-28 09:19:47,913 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 131 transitions. [2021-10-28 09:19:47,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-28 09:19:47,914 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:47,914 INFO L513 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:47,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:48,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:48,131 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:19:48,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:48,132 INFO L85 PathProgramCache]: Analyzing trace with hash -964060479, now seen corresponding path program 1 times [2021-10-28 09:19:48,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:48,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917568340] [2021-10-28 09:19:48,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:48,132 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:48,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:48,134 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:48,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-28 09:19:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:48,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 09:19:48,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:48,718 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 [2021-10-28 09:19:49,319 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:19:49,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:49,780 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:19:49,781 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:49,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917568340] [2021-10-28 09:19:49,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917568340] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:49,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:49,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16, 15] imperfect sequences [] total 16 [2021-10-28 09:19:49,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346568155] [2021-10-28 09:19:49,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-28 09:19:49,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:49,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 09:19:49,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:19:49,786 INFO L87 Difference]: Start difference. First operand 127 states and 131 transitions. Second operand has 17 states, 13 states have (on average 4.230769230769231) internal successors, (55), 11 states have internal predecessors, (55), 7 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2021-10-28 09:19:51,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:51,156 INFO L93 Difference]: Finished difference Result 178 states and 198 transitions. [2021-10-28 09:19:51,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 09:19:51,157 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 4.230769230769231) internal successors, (55), 11 states have internal predecessors, (55), 7 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 74 [2021-10-28 09:19:51,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:51,159 INFO L225 Difference]: With dead ends: 178 [2021-10-28 09:19:51,159 INFO L226 Difference]: Without dead ends: 178 [2021-10-28 09:19:51,160 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 119 SyntacticMatches, 13 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2021-10-28 09:19:51,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-28 09:19:51,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2021-10-28 09:19:51,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 98 states have (on average 1.1938775510204083) internal successors, (117), 111 states have internal predecessors, (117), 22 states have call successors, (22), 21 states have call predecessors, (22), 22 states have return successors, (27), 21 states have call predecessors, (27), 21 states have call successors, (27) [2021-10-28 09:19:51,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 166 transitions. [2021-10-28 09:19:51,170 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 166 transitions. Word has length 74 [2021-10-28 09:19:51,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:51,170 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 166 transitions. [2021-10-28 09:19:51,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 4.230769230769231) internal successors, (55), 11 states have internal predecessors, (55), 7 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2021-10-28 09:19:51,171 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 166 transitions. [2021-10-28 09:19:51,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-28 09:19:51,172 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:51,172 INFO L513 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:51,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:51,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:51,392 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_atomic_sub_returnErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:19:51,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:51,393 INFO L85 PathProgramCache]: Analyzing trace with hash -964060478, now seen corresponding path program 1 times [2021-10-28 09:19:51,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:51,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681262422] [2021-10-28 09:19:51,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:51,393 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:51,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:51,394 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:51,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-28 09:19:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:52,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-28 09:19:52,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:52,172 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 [2021-10-28 09:19:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:19:52,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:19:55,400 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:55,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681262422] [2021-10-28 09:19:55,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681262422] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:55,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:55,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 16] imperfect sequences [] total 32 [2021-10-28 09:19:55,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880982306] [2021-10-28 09:19:55,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-28 09:19:55,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:55,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-28 09:19:55,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=965, Unknown=0, NotChecked=0, Total=1056 [2021-10-28 09:19:55,404 INFO L87 Difference]: Start difference. First operand 154 states and 166 transitions. Second operand has 33 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 21 states have internal predecessors, (70), 12 states have call successors, (23), 10 states have call predecessors, (23), 6 states have return successors, (15), 8 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-28 09:19:59,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:59,119 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2021-10-28 09:19:59,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:19:59,120 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 21 states have internal predecessors, (70), 12 states have call successors, (23), 10 states have call predecessors, (23), 6 states have return successors, (15), 8 states have call predecessors, (15), 4 states have call successors, (15) Word has length 74 [2021-10-28 09:19:59,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:59,122 INFO L225 Difference]: With dead ends: 152 [2021-10-28 09:19:59,122 INFO L226 Difference]: Without dead ends: 152 [2021-10-28 09:19:59,123 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 113 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=132, Invalid=1350, Unknown=0, NotChecked=0, Total=1482 [2021-10-28 09:19:59,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-28 09:19:59,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-10-28 09:19:59,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 98 states have (on average 1.153061224489796) internal successors, (113), 109 states have internal predecessors, (113), 22 states have call successors, (22), 21 states have call predecessors, (22), 22 states have return successors, (27), 21 states have call predecessors, (27), 21 states have call successors, (27) [2021-10-28 09:19:59,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions. [2021-10-28 09:19:59,133 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 74 [2021-10-28 09:19:59,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:59,133 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 162 transitions. [2021-10-28 09:19:59,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 21 states have internal predecessors, (70), 12 states have call successors, (23), 10 states have call predecessors, (23), 6 states have return successors, (15), 8 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-28 09:19:59,134 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 162 transitions. [2021-10-28 09:19:59,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-28 09:19:59,135 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:59,136 INFO L513 BasicCegarLoop]: trace histogram [16, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:59,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:59,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:59,342 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:19:59,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:59,342 INFO L85 PathProgramCache]: Analyzing trace with hash -770520951, now seen corresponding path program 1 times [2021-10-28 09:19:59,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:59,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372566889] [2021-10-28 09:19:59,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:59,343 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:59,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:59,344 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:59,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-28 09:20:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:00,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:20:00,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:20:00,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:20:00,945 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-10-28 09:20:00,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:20:00,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372566889] [2021-10-28 09:20:00,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372566889] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:00,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:20:00,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 11 [2021-10-28 09:20:00,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542497590] [2021-10-28 09:20:00,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:20:00,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:20:00,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:20:00,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:20:00,948 INFO L87 Difference]: Start difference. First operand 152 states and 162 transitions. Second operand has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2021-10-28 09:20:01,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:01,038 INFO L93 Difference]: Finished difference Result 153 states and 159 transitions. [2021-10-28 09:20:01,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:20:01,039 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 77 [2021-10-28 09:20:01,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:01,040 INFO L225 Difference]: With dead ends: 153 [2021-10-28 09:20:01,040 INFO L226 Difference]: Without dead ends: 149 [2021-10-28 09:20:01,041 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:20:01,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-28 09:20:01,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2021-10-28 09:20:01,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 97 states have (on average 1.134020618556701) internal successors, (110), 107 states have internal predecessors, (110), 21 states have call successors, (21), 21 states have call predecessors, (21), 21 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2021-10-28 09:20:01,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 155 transitions. [2021-10-28 09:20:01,049 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 155 transitions. Word has length 77 [2021-10-28 09:20:01,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:01,050 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 155 transitions. [2021-10-28 09:20:01,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2021-10-28 09:20:01,051 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 155 transitions. [2021-10-28 09:20:01,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-28 09:20:01,052 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:01,052 INFO L513 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:01,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:01,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:20:01,262 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_kobject_cleanupErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:20:01,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:01,262 INFO L85 PathProgramCache]: Analyzing trace with hash 810528448, now seen corresponding path program 1 times [2021-10-28 09:20:01,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:20:01,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77097089] [2021-10-28 09:20:01,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:01,264 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:20:01,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:20:01,265 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:20:01,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-28 09:20:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:02,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-28 09:20:02,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:02,197 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 [2021-10-28 09:20:03,038 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:20:03,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:20:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:20:03,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:20:03,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77097089] [2021-10-28 09:20:03,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77097089] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:20:03,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:20:03,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20, 19] imperfect sequences [] total 20 [2021-10-28 09:20:03,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519972221] [2021-10-28 09:20:03,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-28 09:20:03,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:20:03,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-28 09:20:03,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:20:03,617 INFO L87 Difference]: Start difference. First operand 149 states and 155 transitions. Second operand has 21 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 9 states have call successors, (23), 8 states have call predecessors, (23), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-28 09:20:05,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:05,536 INFO L93 Difference]: Finished difference Result 180 states and 196 transitions. [2021-10-28 09:20:05,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-28 09:20:05,536 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 9 states have call successors, (23), 8 states have call predecessors, (23), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 87 [2021-10-28 09:20:05,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:05,538 INFO L225 Difference]: With dead ends: 180 [2021-10-28 09:20:05,538 INFO L226 Difference]: Without dead ends: 180 [2021-10-28 09:20:05,539 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 137 SyntacticMatches, 17 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2021-10-28 09:20:05,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-28 09:20:05,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 155. [2021-10-28 09:20:05,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 101 states have (on average 1.1287128712871286) internal successors, (114), 110 states have internal predecessors, (114), 24 states have call successors, (24), 24 states have call predecessors, (24), 21 states have return successors, (27), 20 states have call predecessors, (27), 23 states have call successors, (27) [2021-10-28 09:20:05,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 165 transitions. [2021-10-28 09:20:05,548 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 165 transitions. Word has length 87 [2021-10-28 09:20:05,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:05,549 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 165 transitions. [2021-10-28 09:20:05,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 9 states have call successors, (23), 8 states have call predecessors, (23), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-28 09:20:05,549 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 165 transitions. [2021-10-28 09:20:05,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-28 09:20:05,550 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:05,551 INFO L513 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:05,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:05,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:20:05,766 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_kobject_cleanupErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:20:05,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:05,766 INFO L85 PathProgramCache]: Analyzing trace with hash 810528449, now seen corresponding path program 1 times [2021-10-28 09:20:05,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:20:05,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600270071] [2021-10-28 09:20:05,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:05,767 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:20:05,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:20:05,769 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:20:05,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-28 09:20:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:06,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-28 09:20:06,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:06,626 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 [2021-10-28 09:20:07,796 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:20:07,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:20:10,927 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:20:10,927 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:20:10,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600270071] [2021-10-28 09:20:10,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600270071] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:20:10,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:20:10,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21, 20] imperfect sequences [] total 40 [2021-10-28 09:20:10,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431223260] [2021-10-28 09:20:10,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-28 09:20:10,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:20:10,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-28 09:20:10,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1525, Unknown=0, NotChecked=0, Total=1640 [2021-10-28 09:20:10,930 INFO L87 Difference]: Start difference. First operand 155 states and 165 transitions. Second operand has 41 states, 32 states have (on average 2.75) internal successors, (88), 25 states have internal predecessors, (88), 16 states have call successors, (29), 14 states have call predecessors, (29), 6 states have return successors, (17), 10 states have call predecessors, (17), 6 states have call successors, (17) [2021-10-28 09:20:15,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:15,958 INFO L93 Difference]: Finished difference Result 153 states and 162 transitions. [2021-10-28 09:20:15,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 09:20:15,959 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 32 states have (on average 2.75) internal successors, (88), 25 states have internal predecessors, (88), 16 states have call successors, (29), 14 states have call predecessors, (29), 6 states have return successors, (17), 10 states have call predecessors, (17), 6 states have call successors, (17) Word has length 87 [2021-10-28 09:20:15,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:15,960 INFO L225 Difference]: With dead ends: 153 [2021-10-28 09:20:15,960 INFO L226 Difference]: Without dead ends: 153 [2021-10-28 09:20:15,961 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 129 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=170, Invalid=2182, Unknown=0, NotChecked=0, Total=2352 [2021-10-28 09:20:15,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-28 09:20:15,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-10-28 09:20:15,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 101 states have (on average 1.099009900990099) internal successors, (111), 108 states have internal predecessors, (111), 24 states have call successors, (24), 24 states have call predecessors, (24), 21 states have return successors, (27), 20 states have call predecessors, (27), 23 states have call successors, (27) [2021-10-28 09:20:15,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 162 transitions. [2021-10-28 09:20:15,969 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 162 transitions. Word has length 87 [2021-10-28 09:20:15,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:15,970 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 162 transitions. [2021-10-28 09:20:15,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 32 states have (on average 2.75) internal successors, (88), 25 states have internal predecessors, (88), 16 states have call successors, (29), 14 states have call predecessors, (29), 6 states have return successors, (17), 10 states have call predecessors, (17), 6 states have call successors, (17) [2021-10-28 09:20:15,971 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 162 transitions. [2021-10-28 09:20:15,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-28 09:20:15,972 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:15,972 INFO L513 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:16,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:16,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:20:16,187 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:20:16,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:16,188 INFO L85 PathProgramCache]: Analyzing trace with hash 147123437, now seen corresponding path program 1 times [2021-10-28 09:20:16,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:20:16,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504541281] [2021-10-28 09:20:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:16,189 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:20:16,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:20:16,190 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:20:16,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-28 09:20:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:17,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 09:20:17,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:20:18,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:20:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:20:19,894 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:20:19,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504541281] [2021-10-28 09:20:19,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504541281] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:20:19,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:20:19,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21, 19] imperfect sequences [] total 39 [2021-10-28 09:20:19,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185449905] [2021-10-28 09:20:19,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-28 09:20:19,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:20:19,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-28 09:20:19,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1410, Unknown=0, NotChecked=0, Total=1560 [2021-10-28 09:20:19,898 INFO L87 Difference]: Start difference. First operand 153 states and 162 transitions. Second operand has 40 states, 31 states have (on average 3.161290322580645) internal successors, (98), 24 states have internal predecessors, (98), 17 states have call successors, (33), 15 states have call predecessors, (33), 7 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) [2021-10-28 09:20:22,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:22,177 INFO L93 Difference]: Finished difference Result 152 states and 161 transitions. [2021-10-28 09:20:22,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 09:20:22,178 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 31 states have (on average 3.161290322580645) internal successors, (98), 24 states have internal predecessors, (98), 17 states have call successors, (33), 15 states have call predecessors, (33), 7 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) Word has length 90 [2021-10-28 09:20:22,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:22,180 INFO L225 Difference]: With dead ends: 152 [2021-10-28 09:20:22,180 INFO L226 Difference]: Without dead ends: 152 [2021-10-28 09:20:22,181 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 136 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=206, Invalid=1956, Unknown=0, NotChecked=0, Total=2162 [2021-10-28 09:20:22,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-28 09:20:22,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-10-28 09:20:22,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 101 states have (on average 1.0891089108910892) internal successors, (110), 107 states have internal predecessors, (110), 24 states have call successors, (24), 24 states have call predecessors, (24), 21 states have return successors, (27), 20 states have call predecessors, (27), 23 states have call successors, (27) [2021-10-28 09:20:22,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 161 transitions. [2021-10-28 09:20:22,190 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 161 transitions. Word has length 90 [2021-10-28 09:20:22,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:22,190 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 161 transitions. [2021-10-28 09:20:22,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 31 states have (on average 3.161290322580645) internal successors, (98), 24 states have internal predecessors, (98), 17 states have call successors, (33), 15 states have call predecessors, (33), 7 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) [2021-10-28 09:20:22,191 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 161 transitions. [2021-10-28 09:20:22,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-28 09:20:22,192 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:22,193 INFO L513 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-10-28 09:20:22,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:22,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:20:22,412 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:20:22,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:22,413 INFO L85 PathProgramCache]: Analyzing trace with hash 2088002500, now seen corresponding path program 1 times [2021-10-28 09:20:22,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:20:22,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571176668] [2021-10-28 09:20:22,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:22,414 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:20:22,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:20:22,415 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:20:22,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-28 09:20:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:23,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 115 conjunts are in the unsatisfiable core [2021-10-28 09:20:23,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:23,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-10-28 09:20:23,667 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-28 09:20:23,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 26 treesize of output 25 [2021-10-28 09:20:23,769 INFO L354 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2021-10-28 09:20:23,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 38 [2021-10-28 09:20:23,901 INFO L354 Elim1Store]: treesize reduction 116, result has 18.3 percent of original size [2021-10-28 09:20:23,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 53 [2021-10-28 09:20:24,099 INFO L354 Elim1Store]: treesize reduction 172, result has 16.9 percent of original size [2021-10-28 09:20:24,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 66 [2021-10-28 09:20:24,346 INFO L354 Elim1Store]: treesize reduction 256, result has 14.7 percent of original size [2021-10-28 09:20:24,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 70 treesize of output 81 [2021-10-28 09:20:24,634 INFO L354 Elim1Store]: treesize reduction 352, result has 13.3 percent of original size [2021-10-28 09:20:24,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 82 treesize of output 96 [2021-10-28 09:20:25,039 INFO L354 Elim1Store]: treesize reduction 462, result has 12.2 percent of original size [2021-10-28 09:20:25,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 94 treesize of output 111 [2021-10-28 09:20:25,636 INFO L354 Elim1Store]: treesize reduction 540, result has 11.6 percent of original size [2021-10-28 09:20:25,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 102 treesize of output 122 [2021-10-28 09:20:26,297 INFO L354 Elim1Store]: treesize reduction 680, result has 10.5 percent of original size [2021-10-28 09:20:26,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 114 treesize of output 137 [2021-10-28 09:20:27,083 INFO L354 Elim1Store]: treesize reduction 796, result has 10.1 percent of original size [2021-10-28 09:20:27,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 124 treesize of output 150 [2021-10-28 09:20:27,967 INFO L354 Elim1Store]: treesize reduction 964, result has 9.2 percent of original size [2021-10-28 09:20:27,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 136 treesize of output 165 [2021-10-28 09:20:29,203 INFO L354 Elim1Store]: treesize reduction 1100, result has 8.9 percent of original size [2021-10-28 09:20:29,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 146 treesize of output 178 [2021-10-28 09:20:30,531 INFO L354 Elim1Store]: treesize reduction 1270, result has 8.4 percent of original size [2021-10-28 09:20:30,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 157 treesize of output 192 [2021-10-28 09:20:32,103 INFO L354 Elim1Store]: treesize reduction 1452, result has 7.9 percent of original size [2021-10-28 09:20:32,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 168 treesize of output 206 [2021-10-28 09:20:33,904 INFO L354 Elim1Store]: treesize reduction 1646, result has 7.5 percent of original size [2021-10-28 09:20:33,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 179 treesize of output 220 [2021-10-28 09:20:39,916 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base| (let ((.cse0 (bvadd (_ bv4 32) |c_ldv_kobject_init_internal_#in~kobj.offset|))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base|) (bvadd |c_ldv_kobject_init_internal_#in~kobj.offset| (_ bv12 32)) v_DerPreprocessor_1) (bvadd (_ bv13 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_2) (bvadd (_ bv14 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_3) (bvadd (_ bv15 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_4) .cse0 .cse0) (bvadd (_ bv8 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) .cse0))) |c_#memory_$Pointer$.offset|)) is different from true [2021-10-28 09:20:41,966 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_#in~kobj.base| (let ((.cse0 (bvadd (_ bv4 32) |c_ldv_kobject_init_#in~kobj.offset|))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_#in~kobj.base|) (bvadd |c_ldv_kobject_init_#in~kobj.offset| (_ bv12 32)) v_DerPreprocessor_1) (bvadd (_ bv13 32) |c_ldv_kobject_init_#in~kobj.offset|) v_DerPreprocessor_2) (bvadd (_ bv14 32) |c_ldv_kobject_init_#in~kobj.offset|) v_DerPreprocessor_3) (bvadd |c_ldv_kobject_init_#in~kobj.offset| (_ bv15 32)) v_DerPreprocessor_4) .cse0 .cse0) (bvadd (_ bv8 32) |c_ldv_kobject_init_#in~kobj.offset|) .cse0))))) is different from true [2021-10-28 09:20:42,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:42,200 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:20:42,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 185 treesize of output 195 [2021-10-28 09:20:47,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:47,731 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:20:47,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 120 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 133 treesize of output 121 [2021-10-28 09:20:50,646 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:20:50,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 92 treesize of output 40 [2021-10-28 09:20:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:51,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:23:09,680 WARN L207 SmtUtils]: Spent 2.18 m on a formula simplification that was a NOOP. DAG size: 152 [2021-10-28 09:23:17,115 WARN L207 SmtUtils]: Spent 5.66 s on a formula simplification that was a NOOP. DAG size: 106 [2021-10-28 09:23:24,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 63 treesize of output 59 [2021-10-28 09:23:26,522 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_kobject_init_#in~kobj.base_BEFORE_CALL_4| (_ BitVec 32)) (|v_ldv_kobject_init_#in~kobj.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base| (let ((.cse0 (bvadd (_ bv4 32) |c_ldv_kobject_init_internal_#in~kobj.offset|))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base|) (bvadd |c_ldv_kobject_init_internal_#in~kobj.offset| (_ bv12 32)) v_DerPreprocessor_17) (bvadd (_ bv13 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_18) (bvadd (_ bv14 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_19) (bvadd (_ bv15 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_20) .cse0 .cse0) (bvadd (_ bv8 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) .cse0))) |v_ldv_kobject_init_#in~kobj.base_BEFORE_CALL_4|) |v_ldv_kobject_init_#in~kobj.offset_BEFORE_CALL_2|) (_ bv0 32)))) (= (select (select |c_#memory_$Pointer$.offset| |v_ldv_kobject_init_#in~kobj.base_BEFORE_CALL_4|) |v_ldv_kobject_init_#in~kobj.offset_BEFORE_CALL_2|) (_ bv0 32)))) is different from false [2021-10-28 09:23:28,796 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_kobject_init_#in~kobj.base_BEFORE_CALL_4| (_ BitVec 32)) (|v_ldv_kobject_init_#in~kobj.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base| (let ((.cse0 (bvadd (_ bv4 32) |c_ldv_kobject_init_internal_#in~kobj.offset|))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base|) (bvadd |c_ldv_kobject_init_internal_#in~kobj.offset| (_ bv12 32)) v_DerPreprocessor_17) (bvadd (_ bv13 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_18) (bvadd (_ bv14 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_19) (bvadd (_ bv15 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_20) .cse0 .cse0) (bvadd (_ bv8 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) .cse0))) |v_ldv_kobject_init_#in~kobj.base_BEFORE_CALL_4|) |v_ldv_kobject_init_#in~kobj.offset_BEFORE_CALL_2|) (_ bv0 32)))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.offset| c_ldv_kobject_init_internal_~kobj.base (let ((.cse1 (bvadd (_ bv4 32) c_ldv_kobject_init_internal_~kobj.offset))) (store (store (select |c_#memory_$Pointer$.offset| c_ldv_kobject_init_internal_~kobj.base) .cse1 .cse1) (bvadd (_ bv8 32) c_ldv_kobject_init_internal_~kobj.offset) .cse1))) |v_ldv_kobject_init_#in~kobj.base_BEFORE_CALL_4|) |v_ldv_kobject_init_#in~kobj.offset_BEFORE_CALL_2|)))) is different from false [2021-10-28 09:23:29,047 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:23:29,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3830258 treesize of output 3821565 [2021-10-28 09:23:43,723 WARN L207 SmtUtils]: Spent 14.67 s on a formula simplification that was a NOOP. DAG size: 2072 [2021-10-28 09:29:07,928 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 09:29:07,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-28 09:29:07,936 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:29:07,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571176668] [2021-10-28 09:29:07,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-28 09:29:07,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [147846225] [2021-10-28 09:29:07,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:29:07,938 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-28 09:29:07,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/cvc4 [2021-10-28 09:29:07,939 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-28 09:29:07,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-28 09:29:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:29:09,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 111 conjunts are in the unsatisfiable core [2021-10-28 09:29:09,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:29:09,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-28 09:29:09,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603243099] [2021-10-28 09:29:09,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:29:09,870 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:29:09,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:29:09,879 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:29:09,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-28 09:29:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:29:11,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 117 conjunts are in the unsatisfiable core [2021-10-28 09:29:11,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:29:11,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-28 09:29:11,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:29:11,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-28 09:29:11,029 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-28 09:29:11,029 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-28 09:29:11,036 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:29:11,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-10-28 09:29:11,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-10-28 09:29:11,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-10-28 09:29:11,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-10-28 09:29:11,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-10-28 09:29:11,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-10-28 09:29:11,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-10-28 09:29:11,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-10-28 09:29:11,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-10-28 09:29:11,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-10-28 09:29:11,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-10-28 09:29:11,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-10-28 09:29:11,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-10-28 09:29:11,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-10-28 09:29:11,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-10-28 09:29:11,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-10-28 09:29:11,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-10-28 09:29:11,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-10-28 09:29:11,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-10-28 09:29:11,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-10-28 09:29:11,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-10-28 09:29:11,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-10-28 09:29:11,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-10-28 09:29:11,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-10-28 09:29:11,043 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-10-28 09:29:11,043 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-10-28 09:29:11,043 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-10-28 09:29:11,043 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-10-28 09:29:11,043 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-10-28 09:29:11,043 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-10-28 09:29:11,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-10-28 09:29:11,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-10-28 09:29:11,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-10-28 09:29:11,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-10-28 09:29:11,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-10-28 09:29:11,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-10-28 09:29:11,045 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-10-28 09:29:11,045 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-10-28 09:29:11,045 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-10-28 09:29:11,045 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-10-28 09:29:11,045 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-10-28 09:29:11,046 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-10-28 09:29:11,046 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:29:11,046 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:29:11,046 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:29:11,046 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:29:11,047 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:29:11,047 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:29:11,047 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:29:11,047 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-10-28 09:29:11,047 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-10-28 09:29:11,047 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-10-28 09:29:11,048 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-10-28 09:29:11,048 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-10-28 09:29:11,048 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-10-28 09:29:11,048 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-10-28 09:29:11,048 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-10-28 09:29:11,049 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:29:11,049 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:29:11,049 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:29:11,049 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:29:11,049 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:29:11,050 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-10-28 09:29:11,050 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-10-28 09:29:11,050 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-10-28 09:29:11,050 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-10-28 09:29:11,050 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-10-28 09:29:11,050 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-10-28 09:29:11,051 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-10-28 09:29:11,051 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-10-28 09:29:11,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2021-10-28 09:29:11,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-28 09:29:11,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-28 09:29:11,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced06bc3-f27f-419b-a3b0-412b5a3678c9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:29:11,661 INFO L731 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:29:11,664 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:29:11,669 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-10-28 09:29:11,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:29:11 BoogieIcfgContainer [2021-10-28 09:29:11,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:29:11,679 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:29:11,679 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:29:11,679 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:29:11,680 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:16" (3/4) ... [2021-10-28 09:29:11,682 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:29:11,682 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:29:11,683 INFO L168 Benchmark]: Toolchain (without parser) took 598159.33 ms. Allocated memory was 56.6 MB in the beginning and 1.5 GB in the end (delta: 1.5 GB). Free memory was 33.3 MB in the beginning and 971.2 MB in the end (delta: -937.9 MB). Peak memory consumption was 527.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:29:11,683 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 56.6 MB. Free memory is still 38.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:29:11,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1034.86 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 33.1 MB in the beginning and 52.1 MB in the end (delta: -19.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:29:11,684 INFO L168 Benchmark]: Boogie Preprocessor took 161.00 ms. Allocated memory is still 73.4 MB. Free memory was 52.1 MB in the beginning and 47.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:29:11,684 INFO L168 Benchmark]: RCFGBuilder took 1835.04 ms. Allocated memory is still 73.4 MB. Free memory was 47.6 MB in the beginning and 43.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:29:11,685 INFO L168 Benchmark]: TraceAbstraction took 595116.01 ms. Allocated memory was 73.4 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 43.1 MB in the beginning and 971.2 MB in the end (delta: -928.1 MB). Peak memory consumption was 521.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:29:11,685 INFO L168 Benchmark]: Witness Printer took 3.43 ms. Allocated memory is still 1.5 GB. Free memory is still 971.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:29:11,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 56.6 MB. Free memory is still 38.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1034.86 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 33.1 MB in the beginning and 52.1 MB in the end (delta: -19.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 161.00 ms. Allocated memory is still 73.4 MB. Free memory was 52.1 MB in the beginning and 47.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1835.04 ms. Allocated memory is still 73.4 MB. Free memory was 47.6 MB in the beginning and 43.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 595116.01 ms. Allocated memory was 73.4 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 43.1 MB in the beginning and 971.2 MB in the end (delta: -928.1 MB). Peak memory consumption was 521.8 MB. Max. memory is 16.1 GB. * Witness Printer took 3.43 ms. Allocated memory is still 1.5 GB. Free memory is still 971.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free 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) }; [L764] CALL entry_point() [L758] struct ldv_kobject *kobj; [L759] CALL, EXPR ldv_kobject_create() [L740] struct ldv_kobject *kobj; [L741] CALL, EXPR ldv_malloc(sizeof(*kobj)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L741] RET, EXPR ldv_malloc(sizeof(*kobj)) [L741] kobj = ldv_malloc(sizeof(*kobj)) [L742] COND FALSE !(!kobj) [L744] FCALL memset(kobj, 0, sizeof(*kobj)) [L745] CALL ldv_kobject_init(kobj) [L730] COND FALSE !(!kobj) [L733] CALL ldv_kobject_init_internal(kobj) [L723] COND FALSE !(!kobj) [L725] CALL ldv_kref_init(&kobj->kref) [L682] ((&kref->refcount)->counter) = (1) [L725] RET ldv_kref_init(&kobj->kref) [L726] CALL LDV_INIT_LIST_HEAD(&kobj->entry) [L540] list->next = list [L541] list->prev = list [L726] RET LDV_INIT_LIST_HEAD(&kobj->entry) [L733] RET ldv_kobject_init_internal(kobj) [L745] RET ldv_kobject_init(kobj) [L746] return kobj; [L759] RET, EXPR ldv_kobject_create() [L759] kobj = ldv_kobject_create() [L760] CALL ldv_kobject_put(kobj) [L711] COND TRUE \read(*kobj) [L712] CALL ldv_kref_put(&kobj->kref, ldv_kobject_release) [L690] CALL ldv_kref_sub(kref, 1, release) [L674] CALL, EXPR ldv_atomic_sub_return(((int) count), (&kref->refcount)) [L665] int temp; [L666] EXPR v->counter [L666] temp = v->counter [L667] temp -= i [L668] v->counter = temp [L669] return temp; [L674] RET, EXPR ldv_atomic_sub_return(((int) count), (&kref->refcount)) [L674] COND TRUE (ldv_atomic_sub_return(((int) count), (&kref->refcount)) == 0) [L675] CALL release(kref) [L706] const typeof( ((struct ldv_kobject *)0)->kref ) *__mptr = (kref); [L706] struct ldv_kobject *kobj = ({ const typeof( ((struct ldv_kobject *)0)->kref ) *__mptr = (kref); (struct ldv_kobject *)( (char *)__mptr - ((size_t) &((struct ldv_kobject *)0)->kref) );}); [L707] CALL ldv_kobject_cleanup(kobj) [L699] EXPR kobj->name [L699] char *name = kobj->name; [L700] free(kobj) [L700] free(kobj) [L700] free(kobj) [L701] COND TRUE \read(*name) [L702] free(name) - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 763]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 47 procedures, 332 locations, 71 error locations. Started 1 CEGAR loops. OverallTime: 595.0s, OverallIterations: 23, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 24.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2335 SDtfs, 1177 SDslu, 16412 SDs, 0 SdLazy, 9607 SolverSat, 326 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2236 GetRequests, 1790 SyntacticMatches, 69 SemanticMatches, 377 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1924 ImplicationChecksByTransitivity, 15.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=20, InterpolantAutomatonStates: 266, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 22 MinimizatonAttempts, 124 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 550.4s InterpolantComputationTime, 1189 NumberOfCodeBlocks, 1153 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 2240 ConstructedInterpolants, 310 QuantifiedInterpolants, 13882 SizeOfPredicates, 128 NumberOfNonLiveVariables, 5061 ConjunctsInSsa, 440 ConjunctsInUnsatCore, 45 InterpolantComputations, 37 PerfectInterpolantSequences, 2985/3382 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...