./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be --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 ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be --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 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:12:30,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:12:30,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:12:30,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:12:30,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:12:30,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:12:30,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:12:30,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:12:30,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:12:30,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:12:30,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:12:30,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:12:30,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:12:30,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:12:30,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:12:30,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:12:30,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:12:30,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:12:30,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:12:30,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:12:30,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:12:30,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:12:30,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:12:30,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:12:30,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:12:30,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:12:30,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:12:30,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:12:30,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:12:30,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:12:30,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:12:30,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:12:30,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:12:30,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:12:30,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:12:30,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:12:30,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:12:30,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:12:30,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:12:30,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:12:30,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:12:30,825 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 20:12:30,872 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:12:30,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:12:30,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:12:30,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:12:30,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:12:30,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:12:30,883 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:12:30,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:12:30,884 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:12:30,884 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:12:30,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:12:30,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:12:30,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:12:30,886 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 20:12:30,886 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 20:12:30,886 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 20:12:30,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:12:30,887 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 20:12:30,887 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:12:30,887 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:12:30,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:12:30,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:12:30,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:12:30,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:12:30,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:12:30,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:12:30,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:12:30,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:12:30,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:12:30,889 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_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 [2021-10-21 20:12:31,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:12:31,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:12:31,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:12:31,222 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:12:31,223 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:12:31,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-10-21 20:12:31,298 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/data/5725dc227/626adc6dc0214456bcc85ab0041dfb31/FLAG227fa4122 [2021-10-21 20:12:31,943 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:12:31,948 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-10-21 20:12:31,963 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/data/5725dc227/626adc6dc0214456bcc85ab0041dfb31/FLAG227fa4122 [2021-10-21 20:12:32,208 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/data/5725dc227/626adc6dc0214456bcc85ab0041dfb31 [2021-10-21 20:12:32,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:12:32,212 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 20:12:32,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:12:32,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:12:32,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:12:32,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:12:32" (1/1) ... [2021-10-21 20:12:32,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b24ade5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:32, skipping insertion in model container [2021-10-21 20:12:32,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:12:32" (1/1) ... [2021-10-21 20:12:32,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:12:32,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:12:32,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:12:32,659 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-21 20:12:32,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@77e282aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:32, skipping insertion in model container [2021-10-21 20:12:32,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:12:32,660 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-21 20:12:32,662 INFO L168 Benchmark]: Toolchain (without parser) took 448.36 ms. Allocated memory is still 115.3 MB. Free memory was 70.7 MB in the beginning and 87.9 MB in the end (delta: -17.1 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:12:32,662 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 115.3 MB. Free memory is still 89.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:12:32,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 441.58 ms. Allocated memory is still 115.3 MB. Free memory was 70.5 MB in the beginning and 87.9 MB in the end (delta: -17.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:12:32,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 115.3 MB. Free memory is still 89.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 441.58 ms. Allocated memory is still 115.3 MB. Free memory was 70.5 MB in the beginning and 87.9 MB in the end (delta: -17.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:12:34,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:12:34,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:12:34,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:12:34,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:12:34,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:12:34,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:12:34,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:12:34,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:12:34,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:12:34,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:12:34,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:12:34,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:12:34,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:12:34,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:12:34,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:12:34,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:12:34,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:12:34,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:12:34,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:12:34,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:12:34,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:12:34,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:12:34,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:12:34,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:12:34,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:12:34,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:12:34,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:12:34,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:12:34,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:12:35,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:12:35,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:12:35,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:12:35,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:12:35,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:12:35,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:12:35,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:12:35,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:12:35,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:12:35,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:12:35,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:12:35,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-21 20:12:35,033 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:12:35,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:12:35,033 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:12:35,033 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:12:35,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:12:35,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:12:35,035 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:12:35,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:12:35,035 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:12:35,035 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:12:35,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:12:35,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:12:35,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:12:35,036 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 20:12:35,036 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 20:12:35,037 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 20:12:35,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:12:35,037 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 20:12:35,037 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:12:35,037 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:12:35,038 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:12:35,038 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:12:35,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:12:35,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:12:35,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:12:35,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:12:35,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:12:35,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:12:35,039 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:12:35,039 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:12:35,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:12:35,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:12:35,040 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_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 [2021-10-21 20:12:35,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:12:35,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:12:35,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:12:35,508 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:12:35,509 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:12:35,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-10-21 20:12:35,600 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/data/3b1f18133/beca663236a141e1991564dd8abffb31/FLAGf5a715469 [2021-10-21 20:12:36,269 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:12:36,270 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-10-21 20:12:36,293 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/data/3b1f18133/beca663236a141e1991564dd8abffb31/FLAGf5a715469 [2021-10-21 20:12:36,463 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/data/3b1f18133/beca663236a141e1991564dd8abffb31 [2021-10-21 20:12:36,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:12:36,471 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 20:12:36,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:12:36,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:12:36,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:12:36,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:12:36" (1/1) ... [2021-10-21 20:12:36,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@611d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:36, skipping insertion in model container [2021-10-21 20:12:36,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:12:36" (1/1) ... [2021-10-21 20:12:36,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:12:36,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:12:37,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:12:37,117 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-21 20:12:37,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:12:37,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:12:37,188 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:12:37,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:12:37,305 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:12:37,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:37 WrapperNode [2021-10-21 20:12:37,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:12:37,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:12:37,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:12:37,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:12:37,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:37" (1/1) ... [2021-10-21 20:12:37,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:37" (1/1) ... [2021-10-21 20:12:37,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:37" (1/1) ... [2021-10-21 20:12:37,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:37" (1/1) ... [2021-10-21 20:12:37,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:37" (1/1) ... [2021-10-21 20:12:37,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:37" (1/1) ... [2021-10-21 20:12:37,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:37" (1/1) ... [2021-10-21 20:12:37,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:12:37,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:12:37,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:12:37,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:12:37,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:37" (1/1) ... [2021-10-21 20:12:37,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:12:37,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:12:37,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:12:37,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:12:37,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 20:12:37,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:12:37,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-10-21 20:12:37,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 20:12:37,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 20:12:37,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 20:12:37,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 20:12:37,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 20:12:37,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 20:12:37,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-10-21 20:12:37,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-10-21 20:12:37,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-10-21 20:12:37,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-10-21 20:12:37,523 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-10-21 20:12:37,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-10-21 20:12:37,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-10-21 20:12:37,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-10-21 20:12:37,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-10-21 20:12:37,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-10-21 20:12:37,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-10-21 20:12:37,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-10-21 20:12:37,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-10-21 20:12:37,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-10-21 20:12:37,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-10-21 20:12:37,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-10-21 20:12:37,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-10-21 20:12:37,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-10-21 20:12:37,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-10-21 20:12:37,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-10-21 20:12:37,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-10-21 20:12:37,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-10-21 20:12:37,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-10-21 20:12:37,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-10-21 20:12:37,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-10-21 20:12:37,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-10-21 20:12:37,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-10-21 20:12:37,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-10-21 20:12:37,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-10-21 20:12:37,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-10-21 20:12:37,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-10-21 20:12:37,528 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-21 20:12:37,528 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-21 20:12:37,528 INFO L138 BoogieDeclarations]: Found implementation of procedure f6 [2021-10-21 20:12:37,529 INFO L138 BoogieDeclarations]: Found implementation of procedure g6 [2021-10-21 20:12:37,529 INFO L138 BoogieDeclarations]: Found implementation of procedure probe2_6 [2021-10-21 20:12:37,529 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2021-10-21 20:12:37,529 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-10-21 20:12:37,530 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 20:12:37,531 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-21 20:12:37,531 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-10-21 20:12:37,531 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-10-21 20:12:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 20:12:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 20:12:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 20:12:37,532 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 20:12:37,532 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 20:12:37,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 20:12:37,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 20:12:37,533 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 20:12:37,533 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 20:12:37,533 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 20:12:37,533 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 20:12:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 20:12:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 20:12:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 20:12:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 20:12:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 20:12:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 20:12:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 20:12:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 20:12:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 20:12:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 20:12:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 20:12:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 20:12:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 20:12:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 20:12:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 20:12:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 20:12:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 20:12:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 20:12:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 20:12:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 20:12:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 20:12:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 20:12:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 20:12:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 20:12:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 20:12:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 20:12:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 20:12:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 20:12:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 20:12:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 20:12:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 20:12:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 20:12:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 20:12:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 20:12:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 20:12:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 20:12:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 20:12:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 20:12:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 20:12:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 20:12:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 20:12:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 20:12:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 20:12:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 20:12:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 20:12:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 20:12:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 20:12:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 20:12:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 20:12:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 20:12:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 20:12:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 20:12:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 20:12:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 20:12:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 20:12:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 20:12:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 20:12:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 20:12:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 20:12:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 20:12:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 20:12:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 20:12:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 20:12:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 20:12:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 20:12:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 20:12:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 20:12:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 20:12:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 20:12:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 20:12:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 20:12:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 20:12:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 20:12:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 20:12:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 20:12:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 20:12:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 20:12:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 20:12:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 20:12:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 20:12:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 20:12:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 20:12:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 20:12:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 20:12:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 20:12:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 20:12:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 20:12:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 20:12:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 20:12:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 20:12:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 20:12:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 20:12:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 20:12:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 20:12:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 20:12:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 20:12:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-10-21 20:12:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 20:12:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-10-21 20:12:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-10-21 20:12:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-21 20:12:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-21 20:12:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-10-21 20:12:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 20:12:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-10-21 20:12:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-10-21 20:12:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-10-21 20:12:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 20:12:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-10-21 20:12:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-10-21 20:12:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-10-21 20:12:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 20:12:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-10-21 20:12:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-10-21 20:12:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-10-21 20:12:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-10-21 20:12:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-10-21 20:12:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-10-21 20:12:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:12:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-10-21 20:12:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-10-21 20:12:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-10-21 20:12:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-10-21 20:12:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-10-21 20:12:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 20:12:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-21 20:12:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-10-21 20:12:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-10-21 20:12:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-10-21 20:12:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-10-21 20:12:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-10-21 20:12:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-10-21 20:12:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-10-21 20:12:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-10-21 20:12:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-10-21 20:12:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-10-21 20:12:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-10-21 20:12:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-10-21 20:12:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-10-21 20:12:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-10-21 20:12:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-21 20:12:37,565 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-21 20:12:37,565 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-21 20:12:37,565 INFO L130 BoogieDeclarations]: Found specification of procedure f6 [2021-10-21 20:12:37,565 INFO L130 BoogieDeclarations]: Found specification of procedure g6 [2021-10-21 20:12:37,565 INFO L130 BoogieDeclarations]: Found specification of procedure probe2_6 [2021-10-21 20:12:37,565 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_6 [2021-10-21 20:12:37,565 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-10-21 20:12:37,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 20:12:37,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 20:12:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:12:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-21 20:12:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:12:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 20:12:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-10-21 20:12:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-10-21 20:12:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-21 20:12:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-21 20:12:38,160 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-21 20:12:38,554 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-21 20:12:38,998 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:12:38,998 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-21 20:12:39,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:12:39 BoogieIcfgContainer [2021-10-21 20:12:39,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:12:39,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:12:39,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:12:39,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:12:39,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:12:36" (1/3) ... [2021-10-21 20:12:39,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e466f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:12:39, skipping insertion in model container [2021-10-21 20:12:39,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:37" (2/3) ... [2021-10-21 20:12:39,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e466f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:12:39, skipping insertion in model container [2021-10-21 20:12:39,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:12:39" (3/3) ... [2021-10-21 20:12:39,010 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_1.i [2021-10-21 20:12:39,015 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:12:39,016 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 83 error locations. [2021-10-21 20:12:39,070 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:12:39,076 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 [2021-10-21 20:12:39,076 INFO L340 AbstractCegarLoop]: Starting to check reachability of 83 error locations. [2021-10-21 20:12:39,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 105 states have internal predecessors, (114), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-10-21 20:12:39,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:12:39,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:12:39,102 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:12:39,103 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:12:39,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:12:39,108 INFO L82 PathProgramCache]: Analyzing trace with hash -42624849, now seen corresponding path program 1 times [2021-10-21 20:12:39,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:12:39,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513800280] [2021-10-21 20:12:39,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:12:39,122 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:12:39,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:12:39,125 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:12:39,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:12:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:12:39,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:12:39,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:12:39,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:39,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:12:39,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:39,608 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:12:39,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513800280] [2021-10-21 20:12:39,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513800280] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:12:39,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:12:39,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 20:12:39,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637639430] [2021-10-21 20:12:39,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:12:39,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:12:39,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:12:39,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:12:39,643 INFO L87 Difference]: Start difference. First operand has 134 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 105 states have internal predecessors, (114), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) 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, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-21 20:12:39,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:12:39,748 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2021-10-21 20:12:39,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:12:39,750 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, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2021-10-21 20:12:39,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:12:39,761 INFO L225 Difference]: With dead ends: 85 [2021-10-21 20:12:39,762 INFO L226 Difference]: Without dead ends: 82 [2021-10-21 20:12:39,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:12:39,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-21 20:12:39,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 65. [2021-10-21 20:12:39,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 49 states have internal predecessors, (53), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-21 20:12:39,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-10-21 20:12:39,815 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 20 [2021-10-21 20:12:39,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:12:39,815 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-10-21 20:12:39,816 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, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-21 20:12:39,816 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-10-21 20:12:39,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:12:39,817 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:12:39,818 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:12:39,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:12:40,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:12:40,032 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:12:40,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:12:40,035 INFO L82 PathProgramCache]: Analyzing trace with hash -239138354, now seen corresponding path program 1 times [2021-10-21 20:12:40,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:12:40,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828714666] [2021-10-21 20:12:40,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:12:40,036 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:12:40,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:12:40,040 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:12:40,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:12:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:12:40,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:12:40,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:12:40,290 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-21 20:12:40,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-21 20:12:40,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-10-21 20:12:40,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:40,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:12:40,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-21 20:12:41,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:41,161 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:12:41,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828714666] [2021-10-21 20:12:41,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828714666] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:12:41,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:12:41,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-21 20:12:41,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265466755] [2021-10-21 20:12:41,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:12:41,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:12:41,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:12:41,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:12:41,165 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 20:12:41,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:12:41,494 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2021-10-21 20:12:41,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:12:41,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 20 [2021-10-21 20:12:41,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:12:41,497 INFO L225 Difference]: With dead ends: 110 [2021-10-21 20:12:41,497 INFO L226 Difference]: Without dead ends: 110 [2021-10-21 20:12:41,498 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 97.1ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:12:41,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-21 20:12:41,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 95. [2021-10-21 20:12:41,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 73 states have internal predecessors, (90), 11 states have call successors, (11), 11 states have call predecessors, (11), 12 states have return successors, (12), 12 states have call predecessors, (12), 10 states have call successors, (12) [2021-10-21 20:12:41,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2021-10-21 20:12:41,518 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 20 [2021-10-21 20:12:41,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:12:41,519 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2021-10-21 20:12:41,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 20:12:41,519 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2021-10-21 20:12:41,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:12:41,521 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:12:41,521 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:12:41,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:12:41,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:12:41,733 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:12:41,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:12:41,734 INFO L82 PathProgramCache]: Analyzing trace with hash -239138355, now seen corresponding path program 1 times [2021-10-21 20:12:41,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:12:41,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019727653] [2021-10-21 20:12:41,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:12:41,735 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:12:41,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:12:41,736 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:12:41,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 20:12:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:12:41,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 20:12:41,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:12:41,980 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-21 20:12:41,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-21 20:12:42,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-10-21 20:12:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:42,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:12:42,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-10-21 20:12:42,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:42,404 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:12:42,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019727653] [2021-10-21 20:12:42,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019727653] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:12:42,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:12:42,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-21 20:12:42,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361759141] [2021-10-21 20:12:42,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:12:42,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:12:42,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:12:42,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:12:42,410 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-21 20:12:42,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:12:42,594 INFO L93 Difference]: Finished difference Result 131 states and 152 transitions. [2021-10-21 20:12:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:12:42,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 20 [2021-10-21 20:12:42,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:12:42,597 INFO L225 Difference]: With dead ends: 131 [2021-10-21 20:12:42,597 INFO L226 Difference]: Without dead ends: 127 [2021-10-21 20:12:42,597 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.8ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:12:42,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-21 20:12:42,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 104. [2021-10-21 20:12:42,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 66 states have (on average 1.5) internal successors, (99), 80 states have internal predecessors, (99), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-21 20:12:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2021-10-21 20:12:42,610 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 20 [2021-10-21 20:12:42,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:12:42,610 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2021-10-21 20:12:42,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-21 20:12:42,610 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2021-10-21 20:12:42,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 20:12:42,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:12:42,612 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:12:42,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:12:42,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:12:42,823 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:12:42,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:12:42,823 INFO L82 PathProgramCache]: Analyzing trace with hash 240943427, now seen corresponding path program 1 times [2021-10-21 20:12:42,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:12:42,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720149026] [2021-10-21 20:12:42,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:12:42,824 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:12:42,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:12:42,825 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:12:42,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 20:12:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:12:43,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:12:43,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:12:43,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:43,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:12:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:43,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:12:43,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720149026] [2021-10-21 20:12:43,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720149026] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:12:43,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:12:43,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-21 20:12:43,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094266780] [2021-10-21 20:12:43,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:12:43,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:12:43,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:12:43,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:12:43,196 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 20:12:43,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:12:43,224 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2021-10-21 20:12:43,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:12:43,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-10-21 20:12:43,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:12:43,227 INFO L225 Difference]: With dead ends: 103 [2021-10-21 20:12:43,227 INFO L226 Difference]: Without dead ends: 103 [2021-10-21 20:12:43,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.4ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:12:43,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-21 20:12:43,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-10-21 20:12:43,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.4696969696969697) internal successors, (97), 79 states have internal predecessors, (97), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-21 20:12:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2021-10-21 20:12:43,236 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 22 [2021-10-21 20:12:43,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:12:43,237 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2021-10-21 20:12:43,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 20:12:43,237 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2021-10-21 20:12:43,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 20:12:43,238 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:12:43,239 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:12:43,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-21 20:12:43,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:12:43,450 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting disconnect_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:12:43,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:12:43,451 INFO L82 PathProgramCache]: Analyzing trace with hash 2116285580, now seen corresponding path program 1 times [2021-10-21 20:12:43,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:12:43,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45108798] [2021-10-21 20:12:43,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:12:43,452 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:12:43,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:12:43,453 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:12:43,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 20:12:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:12:43,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:12:43,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:12:43,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:43,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:12:43,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:43,875 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:12:43,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45108798] [2021-10-21 20:12:43,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45108798] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:12:43,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:12:43,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-21 20:12:43,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478189195] [2021-10-21 20:12:43,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:12:43,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:12:43,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:12:43,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:12:43,878 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 20:12:43,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:12:43,942 INFO L93 Difference]: Finished difference Result 121 states and 137 transitions. [2021-10-21 20:12:43,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:12:43,943 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 22 [2021-10-21 20:12:43,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:12:43,944 INFO L225 Difference]: With dead ends: 121 [2021-10-21 20:12:43,944 INFO L226 Difference]: Without dead ends: 113 [2021-10-21 20:12:43,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 73.6ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:12:43,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-21 20:12:43,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2021-10-21 20:12:43,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 69 states have (on average 1.391304347826087) internal successors, (96), 82 states have internal predecessors, (96), 11 states have call successors, (11), 11 states have call predecessors, (11), 15 states have return successors, (15), 15 states have call predecessors, (15), 10 states have call successors, (15) [2021-10-21 20:12:43,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2021-10-21 20:12:43,955 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 22 [2021-10-21 20:12:43,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:12:43,956 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2021-10-21 20:12:43,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 20:12:43,956 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2021-10-21 20:12:43,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 20:12:43,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:12:43,957 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:12:43,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:12:44,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:12:44,169 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:12:44,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:12:44,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1120687975, now seen corresponding path program 1 times [2021-10-21 20:12:44,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:12:44,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406069451] [2021-10-21 20:12:44,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:12:44,170 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:12:44,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:12:44,171 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:12:44,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 20:12:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:12:44,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 20:12:44,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:12:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:44,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:12:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:44,809 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:12:44,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406069451] [2021-10-21 20:12:44,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406069451] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:12:44,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:12:44,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-10-21 20:12:44,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389337140] [2021-10-21 20:12:44,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:12:44,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:12:44,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:12:44,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:12:44,812 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-21 20:12:45,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:12:45,114 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2021-10-21 20:12:45,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:12:45,115 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2021-10-21 20:12:45,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:12:45,116 INFO L225 Difference]: With dead ends: 118 [2021-10-21 20:12:45,116 INFO L226 Difference]: Without dead ends: 118 [2021-10-21 20:12:45,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 116.0ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:12:45,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-21 20:12:45,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2021-10-21 20:12:45,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.3623188405797102) internal successors, (94), 81 states have internal predecessors, (94), 11 states have call successors, (11), 11 states have call predecessors, (11), 15 states have return successors, (15), 15 states have call predecessors, (15), 10 states have call successors, (15) [2021-10-21 20:12:45,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2021-10-21 20:12:45,124 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 23 [2021-10-21 20:12:45,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:12:45,124 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2021-10-21 20:12:45,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-21 20:12:45,124 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2021-10-21 20:12:45,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 20:12:45,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:12:45,125 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:12:45,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:12:45,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:12:45,326 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:12:45,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:12:45,327 INFO L82 PathProgramCache]: Analyzing trace with hash -381588475, now seen corresponding path program 1 times [2021-10-21 20:12:45,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:12:45,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835590619] [2021-10-21 20:12:45,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:12:45,327 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:12:45,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:12:45,329 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:12:45,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-21 20:12:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:12:45,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:12:45,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:12:45,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 20:12:45,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:45,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:12:45,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:45,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:12:45,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835590619] [2021-10-21 20:12:45,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835590619] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:12:45,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:12:45,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2021-10-21 20:12:45,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289717558] [2021-10-21 20:12:45,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:12:45,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:12:45,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:12:45,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:12:45,782 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:12:45,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:12:45,944 INFO L93 Difference]: Finished difference Result 109 states and 119 transitions. [2021-10-21 20:12:45,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:12:45,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-10-21 20:12:45,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:12:45,946 INFO L225 Difference]: With dead ends: 109 [2021-10-21 20:12:45,946 INFO L226 Difference]: Without dead ends: 109 [2021-10-21 20:12:45,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 38.4ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:12:45,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-21 20:12:45,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2021-10-21 20:12:45,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 81 states have internal predecessors, (93), 11 states have call successors, (11), 11 states have call predecessors, (11), 15 states have return successors, (15), 15 states have call predecessors, (15), 10 states have call successors, (15) [2021-10-21 20:12:45,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2021-10-21 20:12:45,952 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 24 [2021-10-21 20:12:45,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:12:45,953 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2021-10-21 20:12:45,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:12:45,953 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2021-10-21 20:12:45,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 20:12:45,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:12:45,954 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:12:45,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:12:46,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:12:46,155 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:12:46,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:12:46,156 INFO L82 PathProgramCache]: Analyzing trace with hash -887147100, now seen corresponding path program 1 times [2021-10-21 20:12:46,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:12:46,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3378257] [2021-10-21 20:12:46,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:12:46,156 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:12:46,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:12:46,157 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:12:46,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-21 20:12:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:12:46,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:12:46,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:12:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:46,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:12:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:46,627 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:12:46,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3378257] [2021-10-21 20:12:46,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3378257] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:12:46,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:12:46,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 20:12:46,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377967819] [2021-10-21 20:12:46,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:12:46,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:12:46,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:12:46,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:12:46,630 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:12:46,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:12:46,650 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2021-10-21 20:12:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:12:46,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-10-21 20:12:46,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:12:46,653 INFO L225 Difference]: With dead ends: 71 [2021-10-21 20:12:46,653 INFO L226 Difference]: Without dead ends: 67 [2021-10-21 20:12:46,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.0ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:12:46,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-21 20:12:46,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-10-21 20:12:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 40 states have (on average 1.325) internal successors, (53), 50 states have internal predecessors, (53), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-10-21 20:12:46,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-10-21 20:12:46,657 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 24 [2021-10-21 20:12:46,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:12:46,657 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-10-21 20:12:46,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:12:46,657 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-10-21 20:12:46,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-21 20:12:46,658 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:12:46,658 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:12:46,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:12:46,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:12:46,859 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting probe2_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:12:46,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:12:46,860 INFO L82 PathProgramCache]: Analyzing trace with hash 783543578, now seen corresponding path program 1 times [2021-10-21 20:12:46,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:12:46,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108875079] [2021-10-21 20:12:46,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:12:46,860 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:12:46,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:12:46,863 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:12:46,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-21 20:12:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:12:47,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 20:12:47,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:12:47,145 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-21 20:12:47,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-21 20:12:47,313 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-21 20:12:47,313 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 [2021-10-21 20:12:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:47,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:12:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:47,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:12:47,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108875079] [2021-10-21 20:12:47,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108875079] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:12:47,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:12:47,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 8 [2021-10-21 20:12:47,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241232783] [2021-10-21 20:12:47,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:12:47,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:12:47,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:12:47,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:12:47,710 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-21 20:12:48,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:12:48,067 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2021-10-21 20:12:48,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:12:48,068 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), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 28 [2021-10-21 20:12:48,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:12:48,069 INFO L225 Difference]: With dead ends: 71 [2021-10-21 20:12:48,069 INFO L226 Difference]: Without dead ends: 71 [2021-10-21 20:12:48,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 276.6ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-10-21 20:12:48,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-21 20:12:48,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2021-10-21 20:12:48,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 40 states have (on average 1.3) internal successors, (52), 49 states have internal predecessors, (52), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-10-21 20:12:48,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-10-21 20:12:48,072 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 28 [2021-10-21 20:12:48,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:12:48,073 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-10-21 20:12:48,073 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), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-21 20:12:48,073 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-10-21 20:12:48,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-21 20:12:48,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:12:48,074 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:12:48,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:12:48,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:12:48,286 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting probe2_6Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:12:48,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:12:48,286 INFO L82 PathProgramCache]: Analyzing trace with hash 783543579, now seen corresponding path program 1 times [2021-10-21 20:12:48,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:12:48,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885804281] [2021-10-21 20:12:48,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:12:48,287 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:12:48,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:12:48,288 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:12:48,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-21 20:12:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:12:48,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-21 20:12:48,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:12:48,581 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-21 20:12:48,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-21 20:12:52,857 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-21 20:12:52,858 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 12 treesize of output 14 [2021-10-21 20:12:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:53,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:12:54,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:54,934 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:12:54,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885804281] [2021-10-21 20:12:54,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885804281] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:12:54,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:12:54,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2021-10-21 20:12:54,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800552308] [2021-10-21 20:12:54,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 20:12:54,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:12:54,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 20:12:54,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=167, Unknown=2, NotChecked=0, Total=210 [2021-10-21 20:12:54,936 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-21 20:13:01,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:13:01,996 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2021-10-21 20:13:01,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:13:01,998 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 28 [2021-10-21 20:13:01,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:13:01,998 INFO L225 Difference]: With dead ends: 64 [2021-10-21 20:13:01,998 INFO L226 Difference]: Without dead ends: 64 [2021-10-21 20:13:01,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 6477.8ms TimeCoverageRelationStatistics Valid=123, Invalid=381, Unknown=2, NotChecked=0, Total=506 [2021-10-21 20:13:01,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-21 20:13:02,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-21 20:13:02,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.225) internal successors, (49), 47 states have internal predecessors, (49), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-10-21 20:13:02,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2021-10-21 20:13:02,002 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 28 [2021-10-21 20:13:02,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:13:02,003 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2021-10-21 20:13:02,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-21 20:13:02,003 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2021-10-21 20:13:02,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 20:13:02,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:13:02,005 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:13:02,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:13:02,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:13:02,217 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:13:02,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:13:02,218 INFO L82 PathProgramCache]: Analyzing trace with hash 558976828, now seen corresponding path program 1 times [2021-10-21 20:13:02,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:13:02,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675276772] [2021-10-21 20:13:02,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:13:02,219 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:13:02,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:13:02,220 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:13:02,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-21 20:13:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:13:02,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 20:13:02,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:13:02,522 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-21 20:13:02,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-21 20:13:02,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-10-21 20:13:02,741 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 0 case distinctions, treesize of input 21 treesize of output 18 [2021-10-21 20:13:02,935 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-21 20:13:02,936 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 30 treesize of output 33 [2021-10-21 20:13:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:13:02,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:13:03,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-21 20:13:03,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:13:03,645 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:13:03,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675276772] [2021-10-21 20:13:03,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675276772] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:13:03,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:13:03,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-10-21 20:13:03,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720836357] [2021-10-21 20:13:03,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 20:13:03,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:13:03,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 20:13:03,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-21 20:13:03,647 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-21 20:13:52,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:13:52,359 INFO L93 Difference]: Finished difference Result 68 states and 69 transitions. [2021-10-21 20:13:52,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 20:13:52,359 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 29 [2021-10-21 20:13:52,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:13:52,360 INFO L225 Difference]: With dead ends: 68 [2021-10-21 20:13:52,360 INFO L226 Difference]: Without dead ends: 57 [2021-10-21 20:13:52,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 6523.3ms TimeCoverageRelationStatistics Valid=95, Invalid=283, Unknown=2, NotChecked=0, Total=380 [2021-10-21 20:13:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-21 20:13:52,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-10-21 20:13:52,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 40 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-21 20:13:52,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2021-10-21 20:13:52,364 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 29 [2021-10-21 20:13:52,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:13:52,365 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2021-10-21 20:13:52,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-21 20:13:52,365 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2021-10-21 20:13:52,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-21 20:13:52,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:13:52,368 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:13:52,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-21 20:13:52,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:13:52,574 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:13:52,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:13:52,575 INFO L82 PathProgramCache]: Analyzing trace with hash 249986399, now seen corresponding path program 1 times [2021-10-21 20:13:52,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:13:52,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410197992] [2021-10-21 20:13:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:13:52,575 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:13:52,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:13:52,576 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:13:52,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-21 20:13:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:13:52,858 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:13:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:13:52,967 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-21 20:13:52,978 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:13:52,979 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 20:13:52,981 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-10-21 20:13:52,982 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-10-21 20:13:52,982 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-10-21 20:13:52,992 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-10-21 20:13:52,993 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-10-21 20:13:52,993 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-10-21 20:13:52,993 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-10-21 20:13:52,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-10-21 20:13:52,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-10-21 20:13:52,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-10-21 20:13:52,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-10-21 20:13:52,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-10-21 20:13:52,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-10-21 20:13:52,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-10-21 20:13:52,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-10-21 20:13:52,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-10-21 20:13:52,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-10-21 20:13:52,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-10-21 20:13:52,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-10-21 20:13:52,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-10-21 20:13:52,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-10-21 20:13:52,997 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-10-21 20:13:52,997 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-10-21 20:13:52,997 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-10-21 20:13:52,997 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-10-21 20:13:53,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-10-21 20:13:53,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-10-21 20:13:53,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-10-21 20:13:53,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-10-21 20:13:53,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-10-21 20:13:53,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-10-21 20:13:53,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-10-21 20:13:53,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-10-21 20:13:53,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-10-21 20:13:53,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-10-21 20:13:53,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-10-21 20:13:53,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-10-21 20:13:53,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-10-21 20:13:53,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-10-21 20:13:53,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-10-21 20:13:53,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-10-21 20:13:53,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-10-21 20:13:53,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:53,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:53,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:53,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:53,018 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:53,018 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:53,018 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-10-21 20:13:53,018 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-10-21 20:13:53,018 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-10-21 20:13:53,019 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-10-21 20:13:53,019 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-10-21 20:13:53,019 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-10-21 20:13:53,019 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-10-21 20:13:53,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-10-21 20:13:53,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:53,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:53,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:53,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:53,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:53,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:53,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err0REQUIRES_VIOLATION [2021-10-21 20:13:53,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err1REQUIRES_VIOLATION [2021-10-21 20:13:53,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:53,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:53,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:53,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-10-21 20:13:53,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-10-21 20:13:53,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-10-21 20:13:53,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-10-21 20:13:53,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-10-21 20:13:53,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-10-21 20:13:53,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-10-21 20:13:53,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-10-21 20:13:53,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION [2021-10-21 20:13:53,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION [2021-10-21 20:13:53,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err0REQUIRES_VIOLATION [2021-10-21 20:13:53,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err1REQUIRES_VIOLATION [2021-10-21 20:13:53,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:53,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:53,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:53,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-21 20:13:53,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:13:53,233 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:13:53,250 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-21 20:13:53,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:13:53 BoogieIcfgContainer [2021-10-21 20:13:53,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:13:53,269 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:13:53,269 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:13:53,269 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:13:53,270 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:12:39" (3/4) ... [2021-10-21 20:13:53,283 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:13:53,283 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:13:53,284 INFO L168 Benchmark]: Toolchain (without parser) took 76812.23 ms. Allocated memory was 83.9 MB in the beginning and 140.5 MB in the end (delta: 56.6 MB). Free memory was 47.8 MB in the beginning and 44.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 62.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:53,284 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 83.9 MB. Free memory was 66.0 MB in the beginning and 65.9 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:13:53,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 831.79 ms. Allocated memory is still 83.9 MB. Free memory was 47.6 MB in the beginning and 49.6 MB in the end (delta: -2.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:53,285 INFO L168 Benchmark]: Boogie Preprocessor took 96.24 ms. Allocated memory is still 83.9 MB. Free memory was 49.6 MB in the beginning and 44.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:53,285 INFO L168 Benchmark]: RCFGBuilder took 1596.71 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 44.6 MB in the beginning and 83.4 MB in the end (delta: -38.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:53,286 INFO L168 Benchmark]: TraceAbstraction took 74264.81 ms. Allocated memory was 113.2 MB in the beginning and 140.5 MB in the end (delta: 27.3 MB). Free memory was 82.9 MB in the beginning and 44.2 MB in the end (delta: 38.7 MB). Peak memory consumption was 66.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:53,286 INFO L168 Benchmark]: Witness Printer took 14.41 ms. Allocated memory is still 140.5 MB. Free memory was 44.2 MB in the beginning and 44.2 MB in the end (delta: 2.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:13:53,288 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 83.9 MB. Free memory was 66.0 MB in the beginning and 65.9 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 831.79 ms. Allocated memory is still 83.9 MB. Free memory was 47.6 MB in the beginning and 49.6 MB in the end (delta: -2.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 96.24 ms. Allocated memory is still 83.9 MB. Free memory was 49.6 MB in the beginning and 44.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1596.71 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 44.6 MB in the beginning and 83.4 MB in the end (delta: -38.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 74264.81 ms. Allocated memory was 113.2 MB in the beginning and 140.5 MB in the end (delta: 27.3 MB). Free memory was 82.9 MB in the beginning and 44.2 MB in the end (delta: 38.7 MB). Peak memory consumption was 66.0 MB. Max. memory is 16.1 GB. * Witness Printer took 14.41 ms. Allocated memory is still 140.5 MB. Free memory was 44.2 MB in the beginning and 44.2 MB in the end (delta: 2.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 [\old(a6)=null, \old(a6)=null, \old(ldv_global_msg_list)=null, \old(ldv_global_msg_list)=null, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L792] CALL entry_point() VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L785] CALL, EXPR probe2_6(&a6) VAL [a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L764] int ret = - -3; VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, ret=3] [L765] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L765] RET, EXPR ldv_malloc(sizeof(int)) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, ldv_malloc(sizeof(int))={1:0}, ret=3] [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=3] [L768] CALL, EXPR f6() VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L758] return __VERIFIER_nondet_int(); [L768] RET, EXPR f6() VAL [a={3:0}, a={3:0}, a6={3:0}, f6()=0, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=3] [L768] ret = f6() [L769] COND FALSE !(ret<0) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L771] CALL, EXPR g6() VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L761] return __VERIFIER_nondet_int(); [L771] RET, EXPR g6() VAL [a={3:0}, a={3:0}, a6={3:0}, g6()=-2147483648, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L771] ret = g6() [L772] COND TRUE ret<0 [L773] return ret; VAL [\result=-2147483648, a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=2147483648] [L785] RET, EXPR probe2_6(&a6) VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}, probe2_6(&a6)=-2147483648] [L785] int ret = probe2_6(&a6); [L786] COND FALSE !(ret==0) VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}, ret=2147483648] [L789] a6.p = 0 VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}, ret=2147483648] [L792] RET entry_point() VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 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: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 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. - 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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 51 procedures, 374 locations, 83 error locations. Started 1 CEGAR loops. OverallTime: 74162.5ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 26.7ms, AutomataDifference: 57399.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 647 SDtfs, 962 SDslu, 1596 SDs, 0 SdLazy, 986 SolverSat, 263 SolverUnsat, 23 SolverUnknown, 0 SolverNotchecked, 49187.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 535 GetRequests, 414 SyntacticMatches, 30 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 13691.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=0, InterpolantAutomatonStates: 87, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 115.1ms AutomataMinimizationTime, 11 MinimizatonAttempts, 81 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 122.8ms SsaConstructionTime, 399.2ms SatisfiabilityAnalysisTime, 11094.9ms InterpolantComputationTime, 295 NumberOfCodeBlocks, 295 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 498 ConstructedInterpolants, 45 QuantifiedInterpolants, 3168 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1202 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 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 [2021-10-21 20:13:53,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c323a021-a344-4a1f-b908-27adf6ae7c01/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...