./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b85925b4cd4a90c7937c0d7134475db048f88e78d985bef01499b1b0477a4b80 ................................................................................................................................... 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_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b85925b4cd4a90c7937c0d7134475db048f88e78d985bef01499b1b0477a4b80 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:47:12,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:47:12,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:47:12,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:47:12,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:47:12,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:47:12,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:47:12,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:47:12,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:47:12,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:47:12,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:47:12,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:47:12,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:47:12,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:47:12,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:47:12,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:47:12,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:47:12,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:47:12,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:47:12,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:47:12,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:47:12,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:47:12,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:47:12,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:47:12,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:47:12,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:47:12,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:47:12,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:47:12,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:47:12,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:47:12,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:47:12,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:47:12,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:47:12,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:47:12,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:47:12,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:47:12,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:47:12,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:47:12,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:47:12,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:47:12,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:47:12,988 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 08:47:13,029 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:47:13,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:47:13,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:47:13,031 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:47:13,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:47:13,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:47:13,033 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:47:13,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:47:13,034 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:47:13,034 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:47:13,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:47:13,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:47:13,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:47:13,035 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:47:13,036 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:47:13,036 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 08:47:13,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:47:13,037 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:47:13,037 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:47:13,037 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:47:13,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:47:13,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:47:13,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:47:13,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:47:13,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:47:13,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:47:13,039 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:47:13,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:47:13,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:47:13,040 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_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b85925b4cd4a90c7937c0d7134475db048f88e78d985bef01499b1b0477a4b80 [2021-10-28 08:47:13,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:47:13,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:47:13,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:47:13,438 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:47:13,441 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:47:13,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-10-28 08:47:13,585 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/data/765d3e93b/829ee560f8eb4323b864b5df61bd202e/FLAG8d633bec6 [2021-10-28 08:47:14,194 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:47:14,195 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-10-28 08:47:14,211 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/data/765d3e93b/829ee560f8eb4323b864b5df61bd202e/FLAG8d633bec6 [2021-10-28 08:47:14,495 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/data/765d3e93b/829ee560f8eb4323b864b5df61bd202e [2021-10-28 08:47:14,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:47:14,500 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:47:14,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:47:14,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:47:14,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:47:14,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:47:14" (1/1) ... [2021-10-28 08:47:14,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bb90f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:14, skipping insertion in model container [2021-10-28 08:47:14,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:47:14" (1/1) ... [2021-10-28 08:47:14,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:47:14,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:47:14,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:47:14,945 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-28 08:47:14,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@13d47806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:14, skipping insertion in model container [2021-10-28 08:47:14,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:47:14,947 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-28 08:47:14,949 INFO L168 Benchmark]: Toolchain (without parser) took 448.10 ms. Allocated memory is still 94.4 MB. Free memory was 57.8 MB in the beginning and 69.1 MB in the end (delta: -11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:47:14,950 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 94.4 MB. Free memory was 64.6 MB in the beginning and 64.6 MB in the end (delta: 21.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:47:14,951 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.78 ms. Allocated memory is still 94.4 MB. Free memory was 57.5 MB in the beginning and 69.1 MB in the end (delta: -11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:47:14,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 94.4 MB. Free memory was 64.6 MB in the beginning and 64.6 MB in the end (delta: 21.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 444.78 ms. Allocated memory is still 94.4 MB. Free memory was 57.5 MB in the beginning and 69.1 MB in the end (delta: -11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 562]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:47:18,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:47:18,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:47:18,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:47:18,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:47:18,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:47:18,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:47:18,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:47:18,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:47:18,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:47:18,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:47:18,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:47:18,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:47:18,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:47:18,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:47:18,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:47:18,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:47:18,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:47:18,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:47:18,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:47:18,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:47:18,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:47:18,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:47:18,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:47:18,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:47:18,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:47:18,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:47:18,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:47:18,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:47:18,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:47:18,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:47:18,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:47:18,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:47:18,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:47:18,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:47:18,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:47:18,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:47:18,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:47:18,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:47:18,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:47:18,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:47:18,255 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 08:47:18,291 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:47:18,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:47:18,292 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:47:18,292 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:47:18,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:47:18,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:47:18,294 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:47:18,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:47:18,295 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:47:18,295 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:47:18,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:47:18,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:47:18,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:47:18,296 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:47:18,296 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:47:18,297 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 08:47:18,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:47:18,297 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:47:18,297 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 08:47:18,298 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 08:47:18,298 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:47:18,298 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:47:18,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:47:18,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:47:18,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:47:18,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:47:18,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:47:18,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:47:18,300 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 08:47:18,301 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 08:47:18,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:47:18,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 08:47:18,301 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_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b85925b4cd4a90c7937c0d7134475db048f88e78d985bef01499b1b0477a4b80 [2021-10-28 08:47:18,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:47:18,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:47:18,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:47:18,903 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:47:18,904 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:47:18,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-10-28 08:47:19,000 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/data/b719433d5/e072a9f6e4b8440085f43d3bdd00521b/FLAGb99ef3edb [2021-10-28 08:47:19,797 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:47:19,798 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-10-28 08:47:19,820 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/data/b719433d5/e072a9f6e4b8440085f43d3bdd00521b/FLAGb99ef3edb [2021-10-28 08:47:20,034 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/data/b719433d5/e072a9f6e4b8440085f43d3bdd00521b [2021-10-28 08:47:20,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:47:20,039 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:47:20,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:47:20,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:47:20,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:47:20,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:47:20" (1/1) ... [2021-10-28 08:47:20,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@86eda02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:20, skipping insertion in model container [2021-10-28 08:47:20,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:47:20" (1/1) ... [2021-10-28 08:47:20,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:47:20,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:47:20,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:47:20,590 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-28 08:47:20,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:47:20,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:47:20,649 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:47:20,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:47:20,746 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:47:20,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:20 WrapperNode [2021-10-28 08:47:20,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:47:20,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:47:20,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:47:20,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:47:20,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:20" (1/1) ... [2021-10-28 08:47:20,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:20" (1/1) ... [2021-10-28 08:47:20,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:20" (1/1) ... [2021-10-28 08:47:20,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:20" (1/1) ... [2021-10-28 08:47:20,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:20" (1/1) ... [2021-10-28 08:47:20,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:20" (1/1) ... [2021-10-28 08:47:20,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:20" (1/1) ... [2021-10-28 08:47:20,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:47:20,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:47:20,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:47:20,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:47:20,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:20" (1/1) ... [2021-10-28 08:47:20,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:47:20,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:47:20,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:47:20,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:47:20,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 08:47:20,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:47:20,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 08:47:20,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 08:47:20,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 08:47:20,949 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 08:47:20,950 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2021-10-28 08:47:20,950 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 08:47:20,950 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 08:47:20,950 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 08:47:20,951 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 08:47:20,951 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 08:47:20,951 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 08:47:20,951 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 08:47:20,951 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 08:47:20,951 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 08:47:20,952 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 08:47:20,952 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 08:47:20,952 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 08:47:20,952 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 08:47:20,952 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 08:47:20,953 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 08:47:20,953 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 08:47:20,953 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 08:47:20,953 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 08:47:20,953 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 08:47:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 08:47:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 08:47:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 08:47:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 08:47:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 08:47:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 08:47:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 08:47:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 08:47:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 08:47:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 08:47:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 08:47:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 08:47:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 08:47:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 08:47:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 08:47:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 08:47:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 08:47:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 08:47:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 08:47:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 08:47:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 08:47:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 08:47:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 08:47:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 08:47:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 08:47:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 08:47:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 08:47:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 08:47:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 08:47:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 08:47:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 08:47:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 08:47:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 08:47:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 08:47:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 08:47:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 08:47:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 08:47:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 08:47:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 08:47:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 08:47:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 08:47:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 08:47:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 08:47:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 08:47:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 08:47:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 08:47:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 08:47:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 08:47:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 08:47:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 08:47:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 08:47:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 08:47:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 08:47:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 08:47:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 08:47:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 08:47:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 08:47:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 08:47:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 08:47:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 08:47:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 08:47:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 08:47:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 08:47:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 08:47:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 08:47:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 08:47:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 08:47:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 08:47:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 08:47:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 08:47:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 08:47:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 08:47:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 08:47:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 08:47:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 08:47:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 08:47:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 08:47:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 08:47:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 08:47:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 08:47:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 08:47:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 08:47:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 08:47:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 08:47:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 08:47:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 08:47:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 08:47:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 08:47:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2021-10-28 08:47:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 08:47:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 08:47:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 08:47:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 08:47:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:47:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 08:47:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:47:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 08:47:21,489 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 08:47:21,720 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:47:21,721 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-28 08:47:21,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:47:21 BoogieIcfgContainer [2021-10-28 08:47:21,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:47:21,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:47:21,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:47:21,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:47:21,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:47:20" (1/3) ... [2021-10-28 08:47:21,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d74fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:47:21, skipping insertion in model container [2021-10-28 08:47:21,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:20" (2/3) ... [2021-10-28 08:47:21,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d74fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:47:21, skipping insertion in model container [2021-10-28 08:47:21,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:47:21" (3/3) ... [2021-10-28 08:47:21,733 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-1.i [2021-10-28 08:47:21,740 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:47:21,740 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-10-28 08:47:21,798 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:47:21,806 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:47:21,807 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-10-28 08:47:21,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 39 states have internal predecessors, (40), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 08:47:21,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 08:47:21,838 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:47:21,839 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:47:21,840 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-10-28 08:47:21,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:47:21,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1901459912, now seen corresponding path program 1 times [2021-10-28 08:47:21,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:47:21,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42399681] [2021-10-28 08:47:21,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:47:21,865 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:47:21,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:47:21,870 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:47:21,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 08:47:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:47:22,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 08:47:22,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:47:22,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:47:22,528 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-28 08:47:22,529 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 21 treesize of output 26 [2021-10-28 08:47:22,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:47:22,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:47:23,148 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:47:23,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:47:23,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42399681] [2021-10-28 08:47:23,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [42399681] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 08:47:23,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:47:23,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-10-28 08:47:23,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077917719] [2021-10-28 08:47:23,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 08:47:23,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:47:23,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 08:47:23,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:47:23,198 INFO L87 Difference]: Start difference. First operand has 48 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 39 states have internal predecessors, (40), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 08:47:24,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:47:24,042 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-10-28 08:47:24,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:47:24,045 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 19 [2021-10-28 08:47:24,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:47:24,054 INFO L225 Difference]: With dead ends: 44 [2021-10-28 08:47:24,054 INFO L226 Difference]: Without dead ends: 38 [2021-10-28 08:47:24,056 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-28 08:47:24,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-28 08:47:24,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2021-10-28 08:47:24,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 30 states have internal predecessors, (30), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:47:24,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-10-28 08:47:24,102 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 19 [2021-10-28 08:47:24,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:47:24,104 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-10-28 08:47:24,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 08:47:24,105 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-10-28 08:47:24,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 08:47:24,107 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:47:24,107 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:47:24,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:47:24,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:47:24,330 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-10-28 08:47:24,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:47:24,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1901459911, now seen corresponding path program 1 times [2021-10-28 08:47:24,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:47:24,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519407229] [2021-10-28 08:47:24,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:47:24,333 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:47:24,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:47:24,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:47:24,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 08:47:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:47:24,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 08:47:24,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:47:24,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:47:24,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:47:25,031 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 08:47:25,032 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 36 treesize of output 38 [2021-10-28 08:47:25,048 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 08:47:25,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 35 [2021-10-28 08:47:25,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:47:25,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:47:39,288 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~s~0.offset_BEFORE_CALL_2 (_ BitVec 32)) (v_main_~s~0.base_BEFORE_CALL_4 (_ BitVec 32)) (v_alloc_node_~temp~0.base_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_alloc_node_~temp~0.base_16)))) (let ((.cse0 (bvadd (_ bv4 32) v_main_~s~0.offset_BEFORE_CALL_2))) (and (bvule v_main_~s~0.offset_BEFORE_CALL_2 .cse0) (bvule .cse0 (select (store |c_#length| v_alloc_node_~temp~0.base_16 (_ bv4 32)) v_main_~s~0.base_BEFORE_CALL_4)))) (exists ((v_alloc_node_~temp~0.base_15 (_ BitVec 32))) (and (let ((.cse1 (bvadd (_ bv4 32) v_main_~s~0.offset_BEFORE_CALL_2))) (or (not (bvule .cse1 (select (store |c_old(#length)| v_alloc_node_~temp~0.base_15 (_ bv4 32)) v_main_~s~0.base_BEFORE_CALL_4))) (not (bvule v_main_~s~0.offset_BEFORE_CALL_2 .cse1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_alloc_node_~temp~0.base_15))))))))))) is different from false [2021-10-28 08:47:44,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:47:44,841 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:47:44,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519407229] [2021-10-28 08:47:44,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519407229] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 08:47:44,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:47:44,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-28 08:47:44,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235842657] [2021-10-28 08:47:44,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 08:47:44,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:47:44,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 08:47:44,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=170, Unknown=7, NotChecked=26, Total=240 [2021-10-28 08:47:44,853 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 08:48:07,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:48:07,327 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-10-28 08:48:07,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:48:07,329 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 19 [2021-10-28 08:48:07,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:48:07,331 INFO L225 Difference]: With dead ends: 32 [2021-10-28 08:48:07,332 INFO L226 Difference]: Without dead ends: 32 [2021-10-28 08:48:07,333 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=71, Invalid=306, Unknown=7, NotChecked=36, Total=420 [2021-10-28 08:48:07,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-28 08:48:07,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-28 08:48:07,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 25 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:48:07,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-10-28 08:48:07,343 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 19 [2021-10-28 08:48:07,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:48:07,344 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-10-28 08:48:07,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 08:48:07,345 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-10-28 08:48:07,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 08:48:07,346 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:07,347 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:48:07,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:48:07,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:48:07,548 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-10-28 08:48:07,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash 294926047, now seen corresponding path program 1 times [2021-10-28 08:48:07,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:48:07,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728284924] [2021-10-28 08:48:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:07,550 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:48:07,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:48:07,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:48:07,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 08:48:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:48:07,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 08:48:07,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:48:08,403 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:08,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:48:08,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:48:08,768 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:48:08,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728284924] [2021-10-28 08:48:08,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728284924] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 08:48:08,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:48:08,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-10-28 08:48:08,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869611541] [2021-10-28 08:48:08,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 08:48:08,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:48:08,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:48:08,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:48:08,772 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 4 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-28 08:48:09,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:48:09,200 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-10-28 08:48:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:48:09,202 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 4 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 27 [2021-10-28 08:48:09,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:48:09,203 INFO L225 Difference]: With dead ends: 32 [2021-10-28 08:48:09,204 INFO L226 Difference]: Without dead ends: 32 [2021-10-28 08:48:09,204 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-28 08:48:09,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-28 08:48:09,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-10-28 08:48:09,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 24 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:48:09,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-10-28 08:48:09,210 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 27 [2021-10-28 08:48:09,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:48:09,211 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-10-28 08:48:09,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 4 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-28 08:48:09,212 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-10-28 08:48:09,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 08:48:09,213 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:09,213 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:48:09,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:48:09,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:48:09,414 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr11ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-10-28 08:48:09,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:09,415 INFO L85 PathProgramCache]: Analyzing trace with hash -43907359, now seen corresponding path program 1 times [2021-10-28 08:48:09,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:48:09,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440766848] [2021-10-28 08:48:09,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:09,417 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:48:09,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:48:09,419 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:48:09,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 08:48:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:48:09,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 08:48:09,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:48:09,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 08:48:09,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-28 08:48:09,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-28 08:48:09,954 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:48:09,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:48:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:48:10,189 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:48:10,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440766848] [2021-10-28 08:48:10,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440766848] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:48:10,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:48:10,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2021-10-28 08:48:10,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027007592] [2021-10-28 08:48:10,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 08:48:10,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:48:10,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 08:48:10,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:48:10,193 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 08:48:10,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:48:10,485 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-10-28 08:48:10,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:48:10,488 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2021-10-28 08:48:10,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:48:10,491 INFO L225 Difference]: With dead ends: 30 [2021-10-28 08:48:10,491 INFO L226 Difference]: Without dead ends: 30 [2021-10-28 08:48:10,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-28 08:48:10,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-28 08:48:10,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-28 08:48:10,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:48:10,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-10-28 08:48:10,500 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 29 [2021-10-28 08:48:10,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:48:10,501 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-10-28 08:48:10,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 08:48:10,502 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-10-28 08:48:10,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 08:48:10,503 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:10,504 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:48:10,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-28 08:48:10,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:48:10,718 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr12ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-10-28 08:48:10,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:10,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1361128031, now seen corresponding path program 1 times [2021-10-28 08:48:10,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:48:10,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264177230] [2021-10-28 08:48:10,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:10,720 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:48:10,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:48:10,721 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:48:10,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 08:48:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:48:10,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 08:48:10,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:48:11,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-28 08:48:11,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-28 08:48:11,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-28 08:48:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:12,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:48:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:48:12,822 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:48:12,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264177230] [2021-10-28 08:48:12,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264177230] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:48:12,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:48:12,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 8] imperfect sequences [] total 17 [2021-10-28 08:48:12,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497104717] [2021-10-28 08:48:12,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-28 08:48:12,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:48:12,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 08:48:12,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-28 08:48:12,825 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-10-28 08:48:14,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:48:14,130 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-10-28 08:48:14,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 08:48:14,131 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 30 [2021-10-28 08:48:14,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:48:14,133 INFO L225 Difference]: With dead ends: 30 [2021-10-28 08:48:14,133 INFO L226 Difference]: Without dead ends: 30 [2021-10-28 08:48:14,137 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-10-28 08:48:14,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-28 08:48:14,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-10-28 08:48:14,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:48:14,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-10-28 08:48:14,142 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 30 [2021-10-28 08:48:14,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:48:14,143 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-10-28 08:48:14,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-10-28 08:48:14,144 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-10-28 08:48:14,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 08:48:14,145 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:14,145 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:48:14,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-28 08:48:14,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:48:14,354 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr13ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-10-28 08:48:14,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:14,354 INFO L85 PathProgramCache]: Analyzing trace with hash 754704099, now seen corresponding path program 1 times [2021-10-28 08:48:14,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:48:14,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188414367] [2021-10-28 08:48:14,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:14,355 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:48:14,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:48:14,356 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:48:14,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 08:48:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:48:14,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 08:48:14,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:48:14,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:48:15,048 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-28 08:48:15,049 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 31 treesize of output 38 [2021-10-28 08:48:15,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-10-28 08:48:15,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-10-28 08:48:15,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-10-28 08:48:15,914 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-28 08:48:15,915 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 40 treesize of output 43 [2021-10-28 08:48:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:16,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:48:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:19,191 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:48:19,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188414367] [2021-10-28 08:48:19,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188414367] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-28 08:48:19,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:48:19,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 23 [2021-10-28 08:48:19,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032006238] [2021-10-28 08:48:19,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 08:48:19,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:48:19,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 08:48:19,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=484, Unknown=1, NotChecked=0, Total=552 [2021-10-28 08:48:19,195 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 08:48:20,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:48:20,097 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-10-28 08:48:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 08:48:20,099 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2021-10-28 08:48:20,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:48:20,100 INFO L225 Difference]: With dead ends: 28 [2021-10-28 08:48:20,100 INFO L226 Difference]: Without dead ends: 28 [2021-10-28 08:48:20,102 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=98, Invalid=657, Unknown=1, NotChecked=0, Total=756 [2021-10-28 08:48:20,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-28 08:48:20,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-28 08:48:20,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.0) internal successors, (21), 21 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:48:20,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-10-28 08:48:20,108 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 31 [2021-10-28 08:48:20,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:48:20,108 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-10-28 08:48:20,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 08:48:20,109 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-10-28 08:48:20,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 08:48:20,111 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:20,111 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:48:20,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-28 08:48:20,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:48:20,316 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-10-28 08:48:20,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:20,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1920990692, now seen corresponding path program 1 times [2021-10-28 08:48:20,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:48:20,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21709363] [2021-10-28 08:48:20,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:20,317 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:48:20,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:48:20,318 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:48:20,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 08:48:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:48:20,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-28 08:48:20,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:48:20,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:48:21,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2021-10-28 08:48:21,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 34 [2021-10-28 08:48:21,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 30 [2021-10-28 08:48:24,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:48:24,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:48:41,849 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_3| (Array (_ BitVec 32) (_ BitVec 1))) (v_main_~s~0.base_BEFORE_CALL_10 (_ BitVec 32))) (let ((.cse0 (store |c_#valid| v_main_~s~0.base_BEFORE_CALL_10 (_ bv0 1)))) (or (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 |c_alloc_node_#res.base|)))))) (_ bv1 1)))) (not (= |c_alloc_node_#res.base| (_ bv0 32)))) (exists ((|v_main_#t~ret4.base_23| (_ BitVec 32))) (let ((.cse1 (store (store |c_old(#valid)| |v_main_#t~ret4.base_23| (_ bv1 1)) v_main_~s~0.base_BEFORE_CALL_10 (_ bv0 1)))) (and (= (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_main_#t~ret4.base_23|)))))))) (_ bv0 1)) (not (= (_ bv0 32) |v_main_#t~ret4.base_23|)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse1 |v_main_#t~ret4.base_23|)))))))) (_ bv1 1))) (not (= |v_old(#valid)_BEFORE_CALL_3| (store .cse1 |v_main_#t~ret4.base_23| (_ bv0 1))))))) (= |v_old(#valid)_BEFORE_CALL_3| (store .cse0 |c_alloc_node_#res.base| (_ bv0 1)))))) is different from false [2021-10-28 08:48:42,266 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_3| (Array (_ BitVec 32) (_ BitVec 1))) (v_main_~s~0.base_BEFORE_CALL_10 (_ BitVec 32))) (let ((.cse0 (store |c_#valid| v_main_~s~0.base_BEFORE_CALL_10 (_ bv0 1)))) (or (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 |c_alloc_node_#res.base|)))))) (_ bv1 1)))) (not (= |c_alloc_node_#res.base| (_ bv0 32)))) (= |v_old(#valid)_BEFORE_CALL_3| (store .cse0 |c_alloc_node_#res.base| (_ bv0 1))) (exists ((|v_main_#t~ret4.base_23| (_ BitVec 32))) (let ((.cse1 (store (store |c_old(#valid)| |v_main_#t~ret4.base_23| (_ bv1 1)) v_main_~s~0.base_BEFORE_CALL_10 (_ bv0 1)))) (and (not (= (_ bv0 32) |v_main_#t~ret4.base_23|)) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_main_#t~ret4.base_23|))))))))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse1 |v_main_#t~ret4.base_23|)))))))) (_ bv1 1))) (not (= |v_old(#valid)_BEFORE_CALL_3| (store .cse1 |v_main_#t~ret4.base_23| (_ bv0 1)))))))))) is different from false [2021-10-28 08:48:42,682 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_3| (Array (_ BitVec 32) (_ BitVec 1))) (v_main_~s~0.base_BEFORE_CALL_10 (_ BitVec 32))) (let ((.cse0 (store |c_#valid| v_main_~s~0.base_BEFORE_CALL_10 (_ bv0 1)))) (or (= |v_old(#valid)_BEFORE_CALL_3| (store .cse0 c_alloc_node_~temp~0.base (_ bv0 1))) (and (not (= (_ bv0 32) c_alloc_node_~temp~0.base)) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 c_alloc_node_~temp~0.base)))))))))) (exists ((|v_main_#t~ret4.base_23| (_ BitVec 32))) (let ((.cse1 (store (store |c_old(#valid)| |v_main_#t~ret4.base_23| (_ bv1 1)) v_main_~s~0.base_BEFORE_CALL_10 (_ bv0 1)))) (and (not (= (_ bv0 32) |v_main_#t~ret4.base_23|)) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_main_#t~ret4.base_23|))))))))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse1 |v_main_#t~ret4.base_23|)))))))) (_ bv1 1))) (not (= |v_old(#valid)_BEFORE_CALL_3| (store .cse1 |v_main_#t~ret4.base_23| (_ bv0 1)))))))))) is different from false [2021-10-28 08:48:43,615 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_3| (Array (_ BitVec 32) (_ BitVec 1))) (v_main_~s~0.base_BEFORE_CALL_10 (_ BitVec 32)) (v_alloc_node_~temp~0.base_54 (_ BitVec 32))) (let ((.cse0 (store (store |c_#valid| v_alloc_node_~temp~0.base_54 (_ bv1 1)) v_main_~s~0.base_BEFORE_CALL_10 (_ bv0 1)))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_alloc_node_~temp~0.base_54)))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 v_alloc_node_~temp~0.base_54)))))))))))) (exists ((|v_main_#t~ret4.base_23| (_ BitVec 32))) (let ((.cse1 (store (store |c_old(#valid)| |v_main_#t~ret4.base_23| (_ bv1 1)) v_main_~s~0.base_BEFORE_CALL_10 (_ bv0 1)))) (and (not (= (_ bv0 32) |v_main_#t~ret4.base_23|)) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_main_#t~ret4.base_23|))))))))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse1 |v_main_#t~ret4.base_23|)))))))) (_ bv1 1))) (not (= |v_old(#valid)_BEFORE_CALL_3| (store .cse1 |v_main_#t~ret4.base_23| (_ bv0 1))))))) (= v_alloc_node_~temp~0.base_54 (_ bv0 32)) (= |v_old(#valid)_BEFORE_CALL_3| (store .cse0 v_alloc_node_~temp~0.base_54 (_ bv0 1)))))) is different from false [2021-10-28 08:49:09,097 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~ret4.base_23| (_ BitVec 32)) (|v_old(#valid)_BEFORE_CALL_4| (Array (_ BitVec 32) (_ BitVec 1)))) (let ((.cse0 (store (store |c_#valid| |v_main_#t~ret4.base_23| (_ bv1 1)) |c_alloc_node_#res.base| (_ bv0 1)))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_main_#t~ret4.base_23|))))) (= (_ bv0 32) |v_main_#t~ret4.base_23|) (= |v_old(#valid)_BEFORE_CALL_4| (store .cse0 |v_main_#t~ret4.base_23| (_ bv0 1))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 |v_main_#t~ret4.base_23|)))))))))) (_ bv1 1)))) (exists ((|v_main_#t~ret3.base_26| (_ BitVec 32)) (|v_main_#t~ret4.base_23| (_ BitVec 32))) (let ((.cse1 (store |c_old(#valid)| |v_main_#t~ret3.base_26| (_ bv1 1)))) (and (not (= |v_old(#valid)_BEFORE_CALL_4| (store (store (store .cse1 |v_main_#t~ret4.base_23| (_ bv1 1)) |v_main_#t~ret3.base_26| (_ bv0 1)) |v_main_#t~ret4.base_23| (_ bv0 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_main_#t~ret3.base_26|))))))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select .cse1 |v_main_#t~ret4.base_23|)))))) (not (= (_ bv0 32) |v_main_#t~ret4.base_23|)))))))) is different from false [2021-10-28 08:49:09,778 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~ret4.base_23| (_ BitVec 32)) (|v_old(#valid)_BEFORE_CALL_4| (Array (_ BitVec 32) (_ BitVec 1)))) (let ((.cse0 (store (store |c_#valid| |v_main_#t~ret4.base_23| (_ bv1 1)) c_alloc_node_~temp~0.base (_ bv0 1)))) (or (= |v_old(#valid)_BEFORE_CALL_4| (store .cse0 |v_main_#t~ret4.base_23| (_ bv0 1))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_main_#t~ret4.base_23|))))) (= (_ bv0 32) |v_main_#t~ret4.base_23|) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 |v_main_#t~ret4.base_23|)))))))))))) (_ bv1 1)))) (exists ((|v_main_#t~ret3.base_26| (_ BitVec 32)) (|v_main_#t~ret4.base_23| (_ BitVec 32))) (let ((.cse1 (store |c_old(#valid)| |v_main_#t~ret3.base_26| (_ bv1 1)))) (and (not (= |v_old(#valid)_BEFORE_CALL_4| (store (store (store .cse1 |v_main_#t~ret4.base_23| (_ bv1 1)) |v_main_#t~ret3.base_26| (_ bv0 1)) |v_main_#t~ret4.base_23| (_ bv0 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_main_#t~ret3.base_26|))))))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select .cse1 |v_main_#t~ret4.base_23|)))))) (not (= (_ bv0 32) |v_main_#t~ret4.base_23|)))))))) is different from false [2021-10-28 08:49:10,492 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~ret4.base_23| (_ BitVec 32)) (|v_old(#valid)_BEFORE_CALL_4| (Array (_ BitVec 32) (_ BitVec 1))) (v_alloc_node_~temp~0.base_58 (_ BitVec 32))) (let ((.cse0 (store |c_#valid| v_alloc_node_~temp~0.base_58 (_ bv1 1)))) (or (= (_ bv0 32) |v_main_#t~ret4.base_23|) (= |v_old(#valid)_BEFORE_CALL_4| (store (store (store .cse0 |v_main_#t~ret4.base_23| (_ bv1 1)) v_alloc_node_~temp~0.base_58 (_ bv0 1)) |v_main_#t~ret4.base_23| (_ bv0 1))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_alloc_node_~temp~0.base_58)))) (not (= (_ bv0 1) (bvneg (bvneg (select .cse0 |v_main_#t~ret4.base_23|))))) (exists ((|v_main_#t~ret3.base_26| (_ BitVec 32)) (|v_main_#t~ret4.base_23| (_ BitVec 32))) (let ((.cse1 (store |c_old(#valid)| |v_main_#t~ret3.base_26| (_ bv1 1)))) (and (not (= |v_old(#valid)_BEFORE_CALL_4| (store (store (store .cse1 |v_main_#t~ret4.base_23| (_ bv1 1)) |v_main_#t~ret3.base_26| (_ bv0 1)) |v_main_#t~ret4.base_23| (_ bv0 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_main_#t~ret3.base_26|))))))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select .cse1 |v_main_#t~ret4.base_23|)))))) (not (= (_ bv0 32) |v_main_#t~ret4.base_23|)))))))) is different from false [2021-10-28 08:49:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2021-10-28 08:49:10,553 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:49:10,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21709363] [2021-10-28 08:49:10,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21709363] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-28 08:49:10,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:49:10,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [18] total 33 [2021-10-28 08:49:10,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312987358] [2021-10-28 08:49:10,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-28 08:49:10,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:49:10,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 08:49:10,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=618, Unknown=26, NotChecked=392, Total=1122 [2021-10-28 08:49:10,556 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 18 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:49:18,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:49:18,443 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-10-28 08:49:18,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 08:49:18,444 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2021-10-28 08:49:18,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:49:18,445 INFO L225 Difference]: With dead ends: 27 [2021-10-28 08:49:18,445 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 08:49:18,447 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 45.3s TimeCoverageRelationStatistics Valid=152, Invalid=1182, Unknown=26, NotChecked=532, Total=1892 [2021-10-28 08:49:18,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 08:49:18,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 08:49:18,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:49:18,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 08:49:18,448 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-10-28 08:49:18,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:49:18,448 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:49:18,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:49:18,448 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 08:49:18,449 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 08:49:18,452 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION [2021-10-28 08:49:18,452 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION [2021-10-28 08:49:18,453 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2REQUIRES_VIOLATION [2021-10-28 08:49:18,453 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr3REQUIRES_VIOLATION [2021-10-28 08:49:18,453 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr4REQUIRES_VIOLATION [2021-10-28 08:49:18,453 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr5REQUIRES_VIOLATION [2021-10-28 08:49:18,453 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr6REQUIRES_VIOLATION [2021-10-28 08:49:18,454 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr7REQUIRES_VIOLATION [2021-10-28 08:49:18,454 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:49:18,454 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:49:18,454 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr10ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:49:18,454 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr11ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:49:18,455 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr12ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:49:18,455 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr13ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:49:18,455 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr14ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 08:49:18,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 08:49:18,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:49:18,659 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:49:18,660 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:49:18,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:49:18 BoogieIcfgContainer [2021-10-28 08:49:18,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:49:18,664 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:49:18,664 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:49:18,664 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:49:18,665 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:47:21" (3/4) ... [2021-10-28 08:49:18,668 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 08:49:18,677 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 08:49:18,677 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-28 08:49:18,677 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure myexit [2021-10-28 08:49:18,677 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-10-28 08:49:18,678 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-10-28 08:49:18,678 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-28 08:49:18,678 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure alloc_node [2021-10-28 08:49:18,686 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-28 08:49:18,686 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-28 08:49:18,687 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:49:18,687 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:49:18,727 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:49:18,728 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:49:18,729 INFO L168 Benchmark]: Toolchain (without parser) took 118689.27 ms. Allocated memory was 56.6 MB in the beginning and 98.6 MB in the end (delta: 41.9 MB). Free memory was 31.5 MB in the beginning and 66.4 MB in the end (delta: -34.9 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-28 08:49:18,729 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 56.6 MB. Free memory was 37.2 MB in the beginning and 37.1 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:49:18,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.81 ms. Allocated memory was 56.6 MB in the beginning and 81.8 MB in the end (delta: 25.2 MB). Free memory was 31.3 MB in the beginning and 55.6 MB in the end (delta: -24.3 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-28 08:49:18,731 INFO L168 Benchmark]: Boogie Preprocessor took 81.62 ms. Allocated memory is still 81.8 MB. Free memory was 55.6 MB in the beginning and 53.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:49:18,731 INFO L168 Benchmark]: RCFGBuilder took 892.92 ms. Allocated memory is still 81.8 MB. Free memory was 53.0 MB in the beginning and 54.4 MB in the end (delta: -1.4 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2021-10-28 08:49:18,732 INFO L168 Benchmark]: TraceAbstraction took 116937.66 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 53.7 MB in the beginning and 69.4 MB in the end (delta: -15.8 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:49:18,732 INFO L168 Benchmark]: Witness Printer took 64.06 ms. Allocated memory is still 98.6 MB. Free memory was 69.4 MB in the beginning and 66.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:49:18,735 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 56.6 MB. Free memory was 37.2 MB in the beginning and 37.1 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 705.81 ms. Allocated memory was 56.6 MB in the beginning and 81.8 MB in the end (delta: 25.2 MB). Free memory was 31.3 MB in the beginning and 55.6 MB in the end (delta: -24.3 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.62 ms. Allocated memory is still 81.8 MB. Free memory was 55.6 MB in the beginning and 53.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 892.92 ms. Allocated memory is still 81.8 MB. Free memory was 53.0 MB in the beginning and 54.4 MB in the end (delta: -1.4 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 116937.66 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 53.7 MB in the beginning and 69.4 MB in the end (delta: -15.8 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. * Witness Printer took 64.06 ms. Allocated memory is still 98.6 MB. Free memory was 69.4 MB in the beginning and 66.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 570]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 570]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 572]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 572]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 568]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 61 locations, 15 error locations. Started 1 CEGAR loops. OverallTime: 116.8s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 34.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 115 SDtfs, 225 SDslu, 535 SDs, 0 SdLazy, 1191 SolverSat, 74 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 30.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 402 GetRequests, 246 SyntacticMatches, 13 SemanticMatches, 143 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 68.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 79.2s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 360 ConstructedInterpolants, 88 QuantifiedInterpolants, 5212 SizeOfPredicates, 36 NumberOfNonLiveVariables, 614 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 37/70 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 - AllSpecificationsHoldResult: All specifications hold 15 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 08:49:18,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e1ff2-b2d0-4664-958b-6b9fc81314e0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...