./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF --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 bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:25:15,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:25:15,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:25:15,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:25:15,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:25:15,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:25:15,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:25:15,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:25:15,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:25:15,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:25:15,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:25:15,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:25:15,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:25:15,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:25:15,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:25:15,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:25:15,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:25:15,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:25:15,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:25:15,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:25:15,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:25:15,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:25:15,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:25:15,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:25:15,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:25:15,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:25:15,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:25:15,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:25:15,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:25:15,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:25:15,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:25:15,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:25:15,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:25:15,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:25:15,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:25:15,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:25:15,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:25:15,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:25:15,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:25:15,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:25:15,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:25:15,944 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 07:25:15,968 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:25:15,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:25:15,969 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:25:15,969 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:25:15,970 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:25:15,970 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:25:15,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:25:15,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:25:15,971 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:25:15,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:25:15,971 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:25:15,972 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:25:15,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:25:15,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:25:15,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:25:15,972 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 07:25:15,973 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 07:25:15,973 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 07:25:15,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:25:15,973 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:25:15,973 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:25:15,974 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:25:15,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:25:15,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:25:15,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:25:15,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:25:15,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:25:15,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:25:15,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:25:15,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:25:15,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:25:15,976 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_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 [2021-11-20 07:25:16,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:25:16,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:25:16,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:25:16,326 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:25:16,327 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:25:16,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-11-20 07:25:16,407 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/data/7f010addc/e57334cf363d449ca6e843e9c4fb95e9/FLAG9ec8bade5 [2021-11-20 07:25:16,889 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:25:16,890 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-11-20 07:25:16,913 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/data/7f010addc/e57334cf363d449ca6e843e9c4fb95e9/FLAG9ec8bade5 [2021-11-20 07:25:17,214 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/data/7f010addc/e57334cf363d449ca6e843e9c4fb95e9 [2021-11-20 07:25:17,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:25:17,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:25:17,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:25:17,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:25:17,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:25:17,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:25:17" (1/1) ... [2021-11-20 07:25:17,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45693d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:25:17, skipping insertion in model container [2021-11-20 07:25:17,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:25:17" (1/1) ... [2021-11-20 07:25:17,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:25:17,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:25:17,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:25:17,729 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) [2021-11-20 07:25:17,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7ab6646b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:25:17, skipping insertion in model container [2021-11-20 07:25:17,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:25:17,730 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 07:25:17,732 INFO L158 Benchmark]: Toolchain (without parser) took 513.81ms. Allocated memory was 96.5MB in the beginning and 138.4MB in the end (delta: 41.9MB). Free memory was 51.9MB in the beginning and 108.0MB in the end (delta: -56.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:25:17,733 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 96.5MB. Free memory is still 70.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:25:17,734 INFO L158 Benchmark]: CACSL2BoogieTranslator took 511.17ms. Allocated memory was 96.5MB in the beginning and 138.4MB in the end (delta: 41.9MB). Free memory was 51.7MB in the beginning and 108.0MB in the end (delta: -56.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-20 07:25:17,736 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 96.5MB. Free memory is still 70.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 511.17ms. Allocated memory was 96.5MB in the beginning and 138.4MB in the end (delta: 41.9MB). Free memory was 51.7MB in the beginning and 108.0MB in the end (delta: -56.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF --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 bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:25:19,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:25:19,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:25:20,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:25:20,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:25:20,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:25:20,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:25:20,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:25:20,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:25:20,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:25:20,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:25:20,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:25:20,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:25:20,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:25:20,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:25:20,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:25:20,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:25:20,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:25:20,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:25:20,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:25:20,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:25:20,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:25:20,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:25:20,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:25:20,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:25:20,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:25:20,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:25:20,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:25:20,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:25:20,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:25:20,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:25:20,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:25:20,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:25:20,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:25:20,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:25:20,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:25:20,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:25:20,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:25:20,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:25:20,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:25:20,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:25:20,110 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 07:25:20,156 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:25:20,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:25:20,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:25:20,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:25:20,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:25:20,159 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:25:20,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:25:20,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:25:20,161 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:25:20,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:25:20,162 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:25:20,162 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:25:20,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:25:20,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:25:20,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:25:20,163 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 07:25:20,164 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 07:25:20,164 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 07:25:20,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:25:20,164 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:25:20,165 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 07:25:20,165 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 07:25:20,165 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:25:20,165 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:25:20,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:25:20,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:25:20,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:25:20,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:25:20,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:25:20,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:25:20,167 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 07:25:20,167 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 07:25:20,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:25:20,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 07:25:20,168 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_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 [2021-11-20 07:25:20,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:25:20,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:25:20,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:25:20,620 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:25:20,620 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:25:20,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-11-20 07:25:20,712 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/data/2515ab25a/b649a9719f41450195284977f204f9ea/FLAG0f141a043 [2021-11-20 07:25:21,379 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:25:21,379 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-11-20 07:25:21,403 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/data/2515ab25a/b649a9719f41450195284977f204f9ea/FLAG0f141a043 [2021-11-20 07:25:21,588 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/data/2515ab25a/b649a9719f41450195284977f204f9ea [2021-11-20 07:25:21,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:25:21,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:25:21,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:25:21,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:25:21,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:25:21,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:25:21" (1/1) ... [2021-11-20 07:25:21,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27394bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:25:21, skipping insertion in model container [2021-11-20 07:25:21,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:25:21" (1/1) ... [2021-11-20 07:25:21,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:25:21,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:25:22,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:25:22,203 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 07:25:22,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:25:22,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:25:22,312 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:25:22,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:25:22,420 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:25:22,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:25:22 WrapperNode [2021-11-20 07:25:22,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:25:22,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:25:22,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:25:22,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:25:22,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:25:22" (1/1) ... [2021-11-20 07:25:22,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:25:22" (1/1) ... [2021-11-20 07:25:22,481 INFO L137 Inliner]: procedures = 169, calls = 79, calls flagged for inlining = 25, calls inlined = 7, statements flattened = 62 [2021-11-20 07:25:22,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:25:22,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:25:22,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:25:22,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:25:22,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:25:22" (1/1) ... [2021-11-20 07:25:22,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:25:22" (1/1) ... [2021-11-20 07:25:22,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:25:22" (1/1) ... [2021-11-20 07:25:22,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:25:22" (1/1) ... [2021-11-20 07:25:22,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:25:22" (1/1) ... [2021-11-20 07:25:22,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:25:22" (1/1) ... [2021-11-20 07:25:22,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:25:22" (1/1) ... [2021-11-20 07:25:22,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:25:22,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:25:22,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:25:22,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:25:22,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:25:22" (1/1) ... [2021-11-20 07:25:22,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:25:22,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:25:22,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:25:22,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:25:22,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 07:25:22,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 07:25:22,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:25:22,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:25:22,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 07:25:22,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 07:25:22,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:25:22,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 07:25:22,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:25:22,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:25:22,705 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:25:22,707 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:25:22,981 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:25:22,988 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:25:22,989 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 07:25:22,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:25:22 BoogieIcfgContainer [2021-11-20 07:25:22,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:25:22,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:25:22,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:25:22,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:25:22,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:25:21" (1/3) ... [2021-11-20 07:25:22,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14cb0cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:25:22, skipping insertion in model container [2021-11-20 07:25:22,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:25:22" (2/3) ... [2021-11-20 07:25:23,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14cb0cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:25:22, skipping insertion in model container [2021-11-20 07:25:23,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:25:22" (3/3) ... [2021-11-20 07:25:23,002 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_1.i [2021-11-20 07:25:23,010 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:25:23,010 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-11-20 07:25:23,068 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:25:23,076 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 [2021-11-20 07:25:23,076 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-11-20 07:25:23,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:25:23,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 07:25:23,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:25:23,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:23,121 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-20 07:25:23,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:25:23,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1405574468, now seen corresponding path program 1 times [2021-11-20 07:25:23,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:25:23,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118732243] [2021-11-20 07:25:23,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:23,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:25:23,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:25:23,148 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:25:23,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 07:25:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:23,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:25:23,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:25:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:23,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:25:23,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:23,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:25:23,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118732243] [2021-11-20 07:25:23,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118732243] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:25:23,472 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:25:23,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 07:25:23,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449954160] [2021-11-20 07:25:23,474 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:25:23,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:25:23,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:25:23,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:25:23,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:25:23,507 INFO L87 Difference]: Start difference. First operand has 43 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:25:23,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:25:23,614 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2021-11-20 07:25:23,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:25:23,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-20 07:25:23,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:25:23,627 INFO L225 Difference]: With dead ends: 80 [2021-11-20 07:25:23,627 INFO L226 Difference]: Without dead ends: 76 [2021-11-20 07:25:23,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:25:23,635 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 37 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:25:23,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 215 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:25:23,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-20 07:25:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 45. [2021-11-20 07:25:23,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 41 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:25:23,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-11-20 07:25:23,673 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 12 [2021-11-20 07:25:23,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:25:23,674 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-11-20 07:25:23,674 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, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:25:23,674 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-11-20 07:25:23,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 07:25:23,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:25:23,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:23,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:25:23,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:25:23,886 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-20 07:25:23,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:25:23,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1405608821, now seen corresponding path program 1 times [2021-11-20 07:25:23,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:25:23,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864836039] [2021-11-20 07:25:23,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:23,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:25:23,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:25:23,890 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:25:23,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 07:25:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:23,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:25:23,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:25:24,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:24,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:25:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:24,090 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:25:24,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864836039] [2021-11-20 07:25:24,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864836039] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:25:24,091 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:25:24,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 07:25:24,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019547150] [2021-11-20 07:25:24,092 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:25:24,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:25:24,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:25:24,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:25:24,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:25:24,096 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. 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, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:25:24,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:25:24,146 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2021-11-20 07:25:24,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:25:24,147 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, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-20 07:25:24,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:25:24,151 INFO L225 Difference]: With dead ends: 44 [2021-11-20 07:25:24,157 INFO L226 Difference]: Without dead ends: 44 [2021-11-20 07:25:24,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:25:24,163 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 32 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:25:24,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 119 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:25:24,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-20 07:25:24,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-11-20 07:25:24,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 40 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:25:24,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-11-20 07:25:24,175 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 12 [2021-11-20 07:25:24,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:25:24,176 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-11-20 07:25:24,176 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, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:25:24,176 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-11-20 07:25:24,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 07:25:24,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:25:24,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:24,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:25:24,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:25:24,389 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-20 07:25:24,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:25:24,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582493, now seen corresponding path program 1 times [2021-11-20 07:25:24,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:25:24,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340985928] [2021-11-20 07:25:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:24,392 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:25:24,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:25:24,393 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:25:24,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 07:25:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:24,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:25:24,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:25:24,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:24,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:25:24,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:24,747 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:25:24,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340985928] [2021-11-20 07:25:24,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340985928] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:25:24,748 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:25:24,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-11-20 07:25:24,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080063237] [2021-11-20 07:25:24,749 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:25:24,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:25:24,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:25:24,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:25:24,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:25:24,751 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:25:24,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:25:24,874 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2021-11-20 07:25:24,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:25:24,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2021-11-20 07:25:24,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:25:24,877 INFO L225 Difference]: With dead ends: 60 [2021-11-20 07:25:24,877 INFO L226 Difference]: Without dead ends: 60 [2021-11-20 07:25:24,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:25:24,878 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 70 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:25:24,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 63 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:25:24,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-20 07:25:24,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2021-11-20 07:25:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.5625) internal successors, (50), 43 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:25:24,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2021-11-20 07:25:24,889 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 12 [2021-11-20 07:25:24,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:25:24,890 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2021-11-20 07:25:24,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:25:24,890 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2021-11-20 07:25:24,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 07:25:24,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:25:24,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:24,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:25:25,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:25:25,103 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-20 07:25:25,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:25:25,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582492, now seen corresponding path program 1 times [2021-11-20 07:25:25,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:25:25,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950663920] [2021-11-20 07:25:25,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:25,104 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:25:25,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:25:25,105 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:25:25,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 07:25:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:25,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:25:25,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:25:25,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:25,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:25:25,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:25,567 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:25:25,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950663920] [2021-11-20 07:25:25,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950663920] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:25:25,568 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:25:25,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-11-20 07:25:25,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453594189] [2021-11-20 07:25:25,568 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:25:25,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:25:25,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:25:25,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:25:25,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:25:25,570 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:25:25,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:25:25,707 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2021-11-20 07:25:25,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:25:25,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2021-11-20 07:25:25,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:25:25,711 INFO L225 Difference]: With dead ends: 80 [2021-11-20 07:25:25,711 INFO L226 Difference]: Without dead ends: 80 [2021-11-20 07:25:25,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:25:25,713 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 42 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:25:25,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 162 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:25:25,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-20 07:25:25,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2021-11-20 07:25:25,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.6153846153846154) internal successors, (84), 63 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:25:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2021-11-20 07:25:25,728 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 12 [2021-11-20 07:25:25,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:25:25,728 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2021-11-20 07:25:25,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:25:25,729 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2021-11-20 07:25:25,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 07:25:25,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:25:25,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:25,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:25:25,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:25:25,941 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-20 07:25:25,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:25:25,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582909, now seen corresponding path program 1 times [2021-11-20 07:25:25,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:25:25,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629292849] [2021-11-20 07:25:25,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:25,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:25:25,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:25:25,942 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:25:25,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 07:25:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:25,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:25:26,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:25:26,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:26,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:25:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:26,111 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:25:26,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629292849] [2021-11-20 07:25:26,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629292849] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:25:26,112 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:25:26,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 07:25:26,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088496433] [2021-11-20 07:25:26,112 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:25:26,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:25:26,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:25:26,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:25:26,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:25:26,116 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:25:26,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:25:26,195 INFO L93 Difference]: Finished difference Result 90 states and 106 transitions. [2021-11-20 07:25:26,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:25:26,196 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2021-11-20 07:25:26,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:25:26,197 INFO L225 Difference]: With dead ends: 90 [2021-11-20 07:25:26,197 INFO L226 Difference]: Without dead ends: 90 [2021-11-20 07:25:26,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:25:26,199 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 50 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:25:26,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 217 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:25:26,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-20 07:25:26,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 71. [2021-11-20 07:25:26,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 67 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:25:26,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 89 transitions. [2021-11-20 07:25:26,207 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 89 transitions. Word has length 12 [2021-11-20 07:25:26,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:25:26,208 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 89 transitions. [2021-11-20 07:25:26,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:25:26,208 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 89 transitions. [2021-11-20 07:25:26,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 07:25:26,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:25:26,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:26,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:25:26,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:25:26,410 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-20 07:25:26,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:25:26,410 INFO L85 PathProgramCache]: Analyzing trace with hash 624200559, now seen corresponding path program 1 times [2021-11-20 07:25:26,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:25:26,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974292239] [2021-11-20 07:25:26,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:26,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:25:26,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:25:26,412 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:25:26,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 07:25:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:26,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:25:26,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:25:26,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:26,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:25:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:26,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:25:26,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974292239] [2021-11-20 07:25:26,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974292239] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:25:26,709 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:25:26,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-20 07:25:26,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008426012] [2021-11-20 07:25:26,709 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:25:26,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 07:25:26,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:25:26,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:25:26,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:25:26,711 INFO L87 Difference]: Start difference. First operand 71 states and 89 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:25:26,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:25:26,848 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2021-11-20 07:25:26,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:25:26,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2021-11-20 07:25:26,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:25:26,850 INFO L225 Difference]: With dead ends: 81 [2021-11-20 07:25:26,850 INFO L226 Difference]: Without dead ends: 81 [2021-11-20 07:25:26,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:25:26,851 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 94 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:25:26,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 201 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:25:26,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-20 07:25:26,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 70. [2021-11-20 07:25:26,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 56 states have (on average 1.5) internal successors, (84), 66 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:25:26,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2021-11-20 07:25:26,858 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 13 [2021-11-20 07:25:26,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:25:26,859 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2021-11-20 07:25:26,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:25:26,859 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2021-11-20 07:25:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 07:25:26,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:25:26,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:26,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 07:25:27,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:25:27,061 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-20 07:25:27,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:25:27,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2124619081, now seen corresponding path program 1 times [2021-11-20 07:25:27,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:25:27,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62984528] [2021-11-20 07:25:27,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:27,062 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:25:27,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:25:27,063 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:25:27,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 07:25:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:27,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:25:27,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:25:27,166 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 [2021-11-20 07:25:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:27,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:25:27,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:27,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:25:27,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62984528] [2021-11-20 07:25:27,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62984528] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:25:27,280 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:25:27,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 07:25:27,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181022918] [2021-11-20 07:25:27,280 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:25:27,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:25:27,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:25:27,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:25:27,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:25:27,282 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:25:27,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:25:27,390 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2021-11-20 07:25:27,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:25:27,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-20 07:25:27,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:25:27,392 INFO L225 Difference]: With dead ends: 81 [2021-11-20 07:25:27,392 INFO L226 Difference]: Without dead ends: 81 [2021-11-20 07:25:27,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:25:27,393 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 23 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:25:27,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 116 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:25:27,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-20 07:25:27,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 70. [2021-11-20 07:25:27,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 66 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:25:27,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2021-11-20 07:25:27,402 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 14 [2021-11-20 07:25:27,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:25:27,402 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2021-11-20 07:25:27,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:25:27,403 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2021-11-20 07:25:27,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 07:25:27,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:25:27,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:27,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:25:27,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:25:27,613 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-20 07:25:27,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:25:27,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2124571317, now seen corresponding path program 1 times [2021-11-20 07:25:27,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:25:27,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401111222] [2021-11-20 07:25:27,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:27,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:25:27,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:25:27,615 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:25:27,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 07:25:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:27,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 07:25:27,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:25:29,922 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:25:29,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 07:25:30,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:30,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:25:39,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:39,888 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:25:39,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401111222] [2021-11-20 07:25:39,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401111222] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:25:39,890 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:25:39,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-11-20 07:25:39,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343556973] [2021-11-20 07:25:39,891 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:25:39,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 07:25:39,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:25:39,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 07:25:39,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=100, Unknown=4, NotChecked=0, Total=132 [2021-11-20 07:25:39,892 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:25:40,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:25:40,043 INFO L93 Difference]: Finished difference Result 74 states and 87 transitions. [2021-11-20 07:25:40,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:25:40,044 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2021-11-20 07:25:40,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:25:40,045 INFO L225 Difference]: With dead ends: 74 [2021-11-20 07:25:40,045 INFO L226 Difference]: Without dead ends: 74 [2021-11-20 07:25:40,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=36, Invalid=116, Unknown=4, NotChecked=0, Total=156 [2021-11-20 07:25:40,046 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 66 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:25:40,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 214 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 91 Unchecked, 0.1s Time] [2021-11-20 07:25:40,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-20 07:25:40,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2021-11-20 07:25:40,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 65 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:25:40,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2021-11-20 07:25:40,053 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 14 [2021-11-20 07:25:40,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:25:40,053 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2021-11-20 07:25:40,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:25:40,053 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2021-11-20 07:25:40,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 07:25:40,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:25:40,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:40,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 07:25:40,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:25:40,255 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-20 07:25:40,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:25:40,255 INFO L85 PathProgramCache]: Analyzing trace with hash -2124571318, now seen corresponding path program 1 times [2021-11-20 07:25:40,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:25:40,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993382874] [2021-11-20 07:25:40,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:40,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:25:40,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:25:40,257 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:25:40,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 07:25:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:40,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:25:40,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:25:40,442 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 07:25:40,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-11-20 07:25:40,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:40,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:25:40,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:40,738 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:25:40,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993382874] [2021-11-20 07:25:40,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993382874] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:25:40,739 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:25:40,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-20 07:25:40,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523381410] [2021-11-20 07:25:40,739 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:25:40,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 07:25:40,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:25:40,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:25:40,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:25:40,740 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:25:40,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:25:40,880 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2021-11-20 07:25:40,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:25:40,880 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2021-11-20 07:25:40,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:25:40,881 INFO L225 Difference]: With dead ends: 72 [2021-11-20 07:25:40,881 INFO L226 Difference]: Without dead ends: 72 [2021-11-20 07:25:40,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:25:40,882 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 59 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:25:40,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 104 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2021-11-20 07:25:40,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-20 07:25:40,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2021-11-20 07:25:40,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 64 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:25:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2021-11-20 07:25:40,888 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 14 [2021-11-20 07:25:40,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:25:40,888 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2021-11-20 07:25:40,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:25:40,889 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2021-11-20 07:25:40,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 07:25:40,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:25:40,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:40,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 07:25:41,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:25:41,100 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-20 07:25:41,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:25:41,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1940820388, now seen corresponding path program 1 times [2021-11-20 07:25:41,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:25:41,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461975458] [2021-11-20 07:25:41,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:41,102 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:25:41,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:25:41,103 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:25:41,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 07:25:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:41,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:25:41,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:25:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:41,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:25:41,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:41,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:25:41,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461975458] [2021-11-20 07:25:41,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461975458] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:25:41,271 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:25:41,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 07:25:41,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299107582] [2021-11-20 07:25:41,272 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:25:41,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:25:41,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:25:41,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:25:41,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:25:41,273 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:25:41,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:25:41,339 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2021-11-20 07:25:41,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:25:41,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-20 07:25:41,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:25:41,340 INFO L225 Difference]: With dead ends: 75 [2021-11-20 07:25:41,340 INFO L226 Difference]: Without dead ends: 70 [2021-11-20 07:25:41,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:25:41,341 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 21 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:25:41,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 124 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:25:41,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-20 07:25:41,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2021-11-20 07:25:41,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 53 states have (on average 1.3773584905660377) internal successors, (73), 61 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:25:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2021-11-20 07:25:41,345 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 14 [2021-11-20 07:25:41,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:25:41,346 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2021-11-20 07:25:41,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:25:41,346 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2021-11-20 07:25:41,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 07:25:41,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:25:41,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:41,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:25:41,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:25:41,552 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-20 07:25:41,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:25:41,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1973834710, now seen corresponding path program 1 times [2021-11-20 07:25:41,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:25:41,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155886509] [2021-11-20 07:25:41,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:41,560 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:25:41,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:25:41,566 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:25:41,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 07:25:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:41,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 07:25:41,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:25:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:41,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:25:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:41,763 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:25:41,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155886509] [2021-11-20 07:25:41,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155886509] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:25:41,763 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:25:41,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 07:25:41,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553761931] [2021-11-20 07:25:41,764 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:25:41,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:25:41,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:25:41,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:25:41,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:25:41,765 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:25:41,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:25:41,792 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2021-11-20 07:25:41,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:25:41,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-20 07:25:41,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:25:41,794 INFO L225 Difference]: With dead ends: 45 [2021-11-20 07:25:41,794 INFO L226 Difference]: Without dead ends: 41 [2021-11-20 07:25:41,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:25:41,795 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:25:41,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 151 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:25:41,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-20 07:25:41,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-11-20 07:25:41,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 38 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:25:41,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2021-11-20 07:25:41,798 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 14 [2021-11-20 07:25:41,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:25:41,798 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2021-11-20 07:25:41,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:25:41,798 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2021-11-20 07:25:41,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 07:25:41,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:25:41,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:41,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 07:25:41,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:25:42,000 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-20 07:25:42,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:25:42,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1603618149, now seen corresponding path program 1 times [2021-11-20 07:25:42,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:25:42,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209333132] [2021-11-20 07:25:42,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:42,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:25:42,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:25:42,002 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:25:42,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 07:25:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:42,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 07:25:42,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:25:44,280 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:25:44,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-20 07:25:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:44,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:25:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:51,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:25:51,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209333132] [2021-11-20 07:25:51,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209333132] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:25:51,554 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:25:51,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-20 07:25:51,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963390126] [2021-11-20 07:25:51,555 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:25:51,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:25:51,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:25:51,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:25:51,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=59, Unknown=3, NotChecked=0, Total=90 [2021-11-20 07:25:51,556 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:25:51,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:25:51,641 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2021-11-20 07:25:51,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:25:51,641 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2021-11-20 07:25:51,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:25:51,642 INFO L225 Difference]: With dead ends: 40 [2021-11-20 07:25:51,642 INFO L226 Difference]: Without dead ends: 40 [2021-11-20 07:25:51,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=46, Invalid=83, Unknown=3, NotChecked=0, Total=132 [2021-11-20 07:25:51,643 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 67 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:25:51,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 71 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 20 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2021-11-20 07:25:51,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-20 07:25:51,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-20 07:25:51,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 37 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:25:51,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-11-20 07:25:51,646 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 16 [2021-11-20 07:25:51,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:25:51,647 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-11-20 07:25:51,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:25:51,647 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-11-20 07:25:51,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 07:25:51,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:25:51,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:51,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 07:25:51,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:25:51,856 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-20 07:25:51,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:25:51,857 INFO L85 PathProgramCache]: Analyzing trace with hash 406071093, now seen corresponding path program 1 times [2021-11-20 07:25:51,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:25:51,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472543406] [2021-11-20 07:25:51,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:51,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:25:51,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:25:51,858 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:25:51,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 07:25:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:51,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 07:25:51,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:25:52,021 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 07:25:52,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-11-20 07:25:52,261 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-11-20 07:25:52,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 40 [2021-11-20 07:25:52,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:52,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:25:52,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:25:52,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:25:52,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472543406] [2021-11-20 07:25:52,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472543406] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:25:52,646 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:25:52,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 11 [2021-11-20 07:25:52,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874737262] [2021-11-20 07:25:52,647 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:25:52,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 07:25:52,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:25:52,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 07:25:52,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:25:52,648 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:25:54,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:25:54,738 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-11-20 07:25:54,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:25:54,738 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-11-20 07:25:54,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:25:54,739 INFO L225 Difference]: With dead ends: 42 [2021-11-20 07:25:54,739 INFO L226 Difference]: Without dead ends: 42 [2021-11-20 07:25:54,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=58, Invalid=151, Unknown=1, NotChecked=0, Total=210 [2021-11-20 07:25:54,739 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 36 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:25:54,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 109 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 20 Unchecked, 0.0s Time] [2021-11-20 07:25:54,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-20 07:25:54,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2021-11-20 07:25:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 35 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:25:54,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2021-11-20 07:25:54,742 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 17 [2021-11-20 07:25:54,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:25:54,742 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2021-11-20 07:25:54,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:25:54,742 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2021-11-20 07:25:54,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 07:25:54,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:25:54,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:54,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 07:25:54,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:25:54,954 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-20 07:25:54,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:25:54,954 INFO L85 PathProgramCache]: Analyzing trace with hash 816218203, now seen corresponding path program 1 times [2021-11-20 07:25:54,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:25:54,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311559613] [2021-11-20 07:25:54,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:54,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:25:54,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:25:54,956 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:25:54,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 07:25:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:25:55,006 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:25:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:25:55,053 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-20 07:25:55,053 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 07:25:55,054 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2021-11-20 07:25:55,056 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (11 of 13 remaining) [2021-11-20 07:25:55,057 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (10 of 13 remaining) [2021-11-20 07:25:55,057 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (9 of 13 remaining) [2021-11-20 07:25:55,057 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (8 of 13 remaining) [2021-11-20 07:25:55,057 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (7 of 13 remaining) [2021-11-20 07:25:55,058 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (6 of 13 remaining) [2021-11-20 07:25:55,058 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (5 of 13 remaining) [2021-11-20 07:25:55,058 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE (4 of 13 remaining) [2021-11-20 07:25:55,058 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (3 of 13 remaining) [2021-11-20 07:25:55,058 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (2 of 13 remaining) [2021-11-20 07:25:55,059 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (1 of 13 remaining) [2021-11-20 07:25:55,059 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (0 of 13 remaining) [2021-11-20 07:25:55,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 07:25:55,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:25:55,262 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:55,266 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 07:25:55,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:25:55 BoogieIcfgContainer [2021-11-20 07:25:55,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 07:25:55,303 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:25:55,303 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:25:55,303 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:25:55,304 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:25:22" (3/4) ... [2021-11-20 07:25:55,306 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 07:25:55,306 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:25:55,307 INFO L158 Benchmark]: Toolchain (without parser) took 33715.44ms. Allocated memory was 60.8MB in the beginning and 98.6MB in the end (delta: 37.7MB). Free memory was 38.9MB in the beginning and 44.1MB in the end (delta: -5.2MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2021-11-20 07:25:55,307 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 60.8MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:25:55,308 INFO L158 Benchmark]: CACSL2BoogieTranslator took 828.07ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 38.7MB in the beginning and 61.7MB in the end (delta: -23.0MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2021-11-20 07:25:55,309 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.57ms. Allocated memory is still 81.8MB. Free memory was 61.7MB in the beginning and 59.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:25:55,309 INFO L158 Benchmark]: Boogie Preprocessor took 29.93ms. Allocated memory is still 81.8MB. Free memory was 59.2MB in the beginning and 57.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:25:55,310 INFO L158 Benchmark]: RCFGBuilder took 479.18ms. Allocated memory is still 81.8MB. Free memory was 57.5MB in the beginning and 45.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 07:25:55,310 INFO L158 Benchmark]: TraceAbstraction took 32308.73ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 44.6MB in the beginning and 44.1MB in the end (delta: 545.2kB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2021-11-20 07:25:55,310 INFO L158 Benchmark]: Witness Printer took 3.63ms. Allocated memory is still 98.6MB. Free memory is still 44.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:25:55,318 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 60.8MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 828.07ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 38.7MB in the beginning and 61.7MB in the end (delta: -23.0MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.57ms. Allocated memory is still 81.8MB. Free memory was 61.7MB in the beginning and 59.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.93ms. Allocated memory is still 81.8MB. Free memory was 59.2MB in the beginning and 57.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 479.18ms. Allocated memory is still 81.8MB. Free memory was 57.5MB in the beginning and 45.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 32308.73ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 44.6MB in the beginning and 44.1MB in the end (delta: 545.2kB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * Witness Printer took 3.63ms. Allocated memory is still 98.6MB. Free memory is still 44.1MB. There was no memory consumed. Max. memory is 16.1GB. * 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: 791]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 791. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L783] struct A a6; VAL [a6={2:0}, ldv_global_msg_list={1:0}] [L792] CALL entry_point() [L785] CALL, EXPR probe2_6(&a6) [L764] int ret = - -3; VAL [a={2:0}, a={2:0}, a6={2:0}, ldv_global_msg_list={1:0}, ret=3] [L765] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, a6={2:0}, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L765] RET, EXPR ldv_malloc(sizeof(int)) VAL [a={2:0}, a={2:0}, a6={2:0}, ldv_global_msg_list={1:0}, ldv_malloc(sizeof(int))={6:0}, ret=3] [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) [L768] CALL, EXPR f6() [L758] return __VERIFIER_nondet_int(); [L768] RET, EXPR f6() [L768] ret = f6() [L769] COND FALSE !(ret<0) [L771] CALL, EXPR g6() [L761] return __VERIFIER_nondet_int(); [L771] RET, EXPR g6() [L771] ret = g6() [L772] COND TRUE ret<0 [L773] return ret; VAL [\result=-2147483648, a={2:0}, a={2:0}, a6={2:0}, ldv_global_msg_list={1:0}, p={6:0}, ret=2147483648] [L785] RET, EXPR probe2_6(&a6) [L785] int ret = probe2_6(&a6); [L786] COND FALSE !(ret==0) VAL [a6={2:0}, ldv_global_msg_list={1:0}, ret=2147483648] [L789] a6.p = 0 VAL [a6={2:0}, ldv_global_msg_list={1:0}, ret=2147483648] [L792] RET entry_point() - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 789]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 789]: 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 2 procedures, 43 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 32.2s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 599 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 597 mSDsluCounter, 1866 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 149 IncrementalHoareTripleChecker+Unchecked, 1345 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 499 IncrementalHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 521 mSDtfsCounter, 499 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 343 GetRequests, 249 SyntacticMatches, 8 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 20.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=5, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 116 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 24.7s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 326 ConstructedInterpolants, 34 QuantifiedInterpolants, 3179 SizeOfPredicates, 16 NumberOfNonLiveVariables, 662 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 07:25:55,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f3ae494-7f19-41f6-8e8c-7673d3b083f2/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample