./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 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/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_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt --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 86b203c3a804c103d90401bd32cfcff28939b920 ................................................................................................................................... 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_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/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_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt --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 86b203c3a804c103d90401bd32cfcff28939b920 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:17:16,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:17:16,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:17:16,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:17:16,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:17:16,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:17:16,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:17:16,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:17:16,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:17:16,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:17:16,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:17:16,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:17:16,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:17:16,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:17:16,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:17:16,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:17:16,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:17:16,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:17:16,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:17:16,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:17:16,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:17:16,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:17:16,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:17:16,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:17:16,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:17:16,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:17:16,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:17:16,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:17:16,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:17:16,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:17:16,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:17:16,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:17:16,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:17:16,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:17:17,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:17:17,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:17:17,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:17:17,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:17:17,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:17:17,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:17:17,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:17:17,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 00:17:17,054 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:17:17,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:17:17,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:17:17,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:17:17,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:17:17,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:17:17,065 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:17:17,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:17:17,065 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:17:17,066 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:17:17,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:17:17,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:17:17,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:17:17,068 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:17:17,068 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:17:17,068 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:17:17,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:17:17,069 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:17:17,069 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:17:17,069 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:17:17,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:17:17,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:17:17,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:17:17,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:17:17,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:17:17,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:17:17,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:17:17,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:17:17,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:17:17,073 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_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86b203c3a804c103d90401bd32cfcff28939b920 [2021-10-13 00:17:17,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:17:17,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:17:17,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:17:17,469 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:17:17,470 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:17:17,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-10-13 00:17:17,559 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/data/df98358c9/b85455f7dea84d9da998899fca96972c/FLAGc5b1fa24d [2021-10-13 00:17:18,312 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:17:18,317 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-10-13 00:17:18,339 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/data/df98358c9/b85455f7dea84d9da998899fca96972c/FLAGc5b1fa24d [2021-10-13 00:17:18,568 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/data/df98358c9/b85455f7dea84d9da998899fca96972c [2021-10-13 00:17:18,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:17:18,573 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:17:18,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:17:18,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:17:18,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:17:18,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:17:18" (1/1) ... [2021-10-13 00:17:18,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58fa2aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:18, skipping insertion in model container [2021-10-13 00:17:18,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:17:18" (1/1) ... [2021-10-13 00:17:18,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:17:18,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:17:19,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:17:19,053 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) [2021-10-13 00:17:19,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@48a7860f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:19, skipping insertion in model container [2021-10-13 00:17:19,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:17:19,058 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-13 00:17:19,060 INFO L168 Benchmark]: Toolchain (without parser) took 486.05 ms. Allocated memory is still 104.9 MB. Free memory was 71.4 MB in the beginning and 78.0 MB in the end (delta: -6.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:19,062 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 104.9 MB. Free memory was 57.9 MB in the beginning and 57.8 MB in the end (delta: 54.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:17:19,064 INFO L168 Benchmark]: CACSL2BoogieTranslator took 482.84 ms. Allocated memory is still 104.9 MB. Free memory was 71.4 MB in the beginning and 78.0 MB in the end (delta: -6.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:19,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 104.9 MB. Free memory was 57.9 MB in the beginning and 57.8 MB in the end (delta: 54.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 482.84 ms. Allocated memory is still 104.9 MB. Free memory was 71.4 MB in the beginning and 78.0 MB in the end (delta: -6.5 MB). Peak memory consumption was 6.3 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-4e77c04 [2021-10-13 00:17:21,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:17:21,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:17:21,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:17:21,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:17:21,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:17:21,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:17:21,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:17:21,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:17:21,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:17:21,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:17:21,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:17:21,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:17:21,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:17:21,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:17:21,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:17:21,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:17:21,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:17:21,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:17:21,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:17:21,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:17:21,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:17:21,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:17:21,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:17:21,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:17:21,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:17:21,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:17:21,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:17:21,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:17:21,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:17:21,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:17:21,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:17:21,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:17:21,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:17:21,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:17:21,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:17:21,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:17:21,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:17:21,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:17:21,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:17:21,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:17:21,879 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 00:17:21,923 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:17:21,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:17:21,924 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:17:21,924 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:17:21,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:17:21,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:17:21,926 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:17:21,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:17:21,926 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:17:21,926 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:17:21,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:17:21,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:17:21,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:17:21,927 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:17:21,927 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:17:21,927 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:17:21,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:17:21,928 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:17:21,928 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 00:17:21,928 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 00:17:21,928 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:17:21,929 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:17:21,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:17:21,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:17:21,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:17:21,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:17:21,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:17:21,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:17:21,930 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 00:17:21,930 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 00:17:21,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:17:21,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 00:17:21,931 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_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86b203c3a804c103d90401bd32cfcff28939b920 [2021-10-13 00:17:22,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:17:22,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:17:22,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:17:22,383 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:17:22,384 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:17:22,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-10-13 00:17:22,477 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/data/e14ef6983/0e3cf5ec2f5f426d8a0fd80244135f3a/FLAG08ba97147 [2021-10-13 00:17:23,183 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:17:23,184 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-10-13 00:17:23,198 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/data/e14ef6983/0e3cf5ec2f5f426d8a0fd80244135f3a/FLAG08ba97147 [2021-10-13 00:17:23,392 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/data/e14ef6983/0e3cf5ec2f5f426d8a0fd80244135f3a [2021-10-13 00:17:23,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:17:23,402 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:17:23,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:17:23,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:17:23,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:17:23,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:17:23" (1/1) ... [2021-10-13 00:17:23,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57eac099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:23, skipping insertion in model container [2021-10-13 00:17:23,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:17:23" (1/1) ... [2021-10-13 00:17:23,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:17:23,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:17:23,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:17:23,809 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 00:17:23,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:17:23,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:17:23,888 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:17:23,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:17:24,015 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:17:24,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:24 WrapperNode [2021-10-13 00:17:24,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:17:24,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:17:24,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:17:24,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:17:24,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:24" (1/1) ... [2021-10-13 00:17:24,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:24" (1/1) ... [2021-10-13 00:17:24,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:24" (1/1) ... [2021-10-13 00:17:24,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:24" (1/1) ... [2021-10-13 00:17:24,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:24" (1/1) ... [2021-10-13 00:17:24,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:24" (1/1) ... [2021-10-13 00:17:24,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:24" (1/1) ... [2021-10-13 00:17:24,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:17:24,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:17:24,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:17:24,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:17:24,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:24" (1/1) ... [2021-10-13 00:17:24,107 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:17:24,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:17:24,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:17:24,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:17:24,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:17:24,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:17:24,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:17:24,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:17:24,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:17:24,182 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-13 00:17:24,182 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2021-10-13 00:17:24,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:17:24,182 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:17:24,182 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:17:24,182 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:17:24,183 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:17:24,183 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:17:24,183 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:17:24,183 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:17:24,183 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:17:24,183 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:17:24,183 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:17:24,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:17:24,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:17:24,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:17:24,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:17:24,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:17:24,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:17:24,185 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:17:24,185 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:17:24,185 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:17:24,185 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:17:24,185 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:17:24,185 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:17:24,185 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:17:24,185 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:17:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:17:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:17:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:17:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:17:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:17:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:17:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:17:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:17:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:17:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:17:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:17:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:17:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:17:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:17:24,188 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:17:24,188 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:17:24,188 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:17:24,188 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:17:24,188 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:17:24,188 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:17:24,188 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:17:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:17:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:17:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:17:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:17:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:17:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:17:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:17:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:17:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:17:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:17:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:17:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-13 00:17:24,191 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:17:24,191 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:17:24,191 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:17:24,191 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 00:17:24,191 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:17:24,191 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:17:24,192 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 00:17:24,192 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:17:24,192 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:17:24,192 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 00:17:24,192 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:17:24,192 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:17:24,193 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:17:24,193 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:17:24,193 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:17:24,193 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:17:24,193 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:17:24,193 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:17:24,194 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:17:24,194 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:17:24,194 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:17:24,194 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:17:24,194 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:17:24,194 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:17:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:17:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:17:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:17:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:17:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:17:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:17:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:17:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:17:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:17:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:17:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:17:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:17:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:17:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:17:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:17:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:17:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:17:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:17:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:17:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:17:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:17:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:17:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:17:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:17:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-13 00:17:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2021-10-13 00:17:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 00:17:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:17:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 00:17:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 00:17:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:17:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:17:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:17:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:17:24,575 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-13 00:17:24,806 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:17:24,806 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-13 00:17:24,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:17:24 BoogieIcfgContainer [2021-10-13 00:17:24,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:17:24,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:17:24,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:17:24,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:17:24,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:17:23" (1/3) ... [2021-10-13 00:17:24,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201d8756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:17:24, skipping insertion in model container [2021-10-13 00:17:24,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:24" (2/3) ... [2021-10-13 00:17:24,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201d8756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:17:24, skipping insertion in model container [2021-10-13 00:17:24,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:17:24" (3/3) ... [2021-10-13 00:17:24,819 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-1.i [2021-10-13 00:17:24,825 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:17:24,826 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-10-13 00:17:24,881 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:17:24,888 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:17:24,888 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-10-13 00:17:24,907 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) [2021-10-13 00:17:24,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 00:17:24,916 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:24,917 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:17:24,918 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-10-13 00:17:24,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:24,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1901459912, now seen corresponding path program 1 times [2021-10-13 00:17:24,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:17:24,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030114041] [2021-10-13 00:17:24,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:24,939 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:17:24,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:17:24,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:17:24,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 00:17:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:17:25,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:17:25,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:17:25,202 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 [2021-10-13 00:17:25,424 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 00:17:25,425 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 [2021-10-13 00:17:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:25,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:17:25,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:25,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:17:25,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030114041] [2021-10-13 00:17:25,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030114041] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:17:25,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:17:25,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-10-13 00:17:25,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756551903] [2021-10-13 00:17:25,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:17:25,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:17:26,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:17:26,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:17:26,005 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) [2021-10-13 00:17:26,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:17:26,665 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-10-13 00:17:26,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:17:26,667 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 [2021-10-13 00:17:26,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:17:26,677 INFO L225 Difference]: With dead ends: 44 [2021-10-13 00:17:26,677 INFO L226 Difference]: Without dead ends: 38 [2021-10-13 00:17:26,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 332.7ms TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:17:26,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-13 00:17:26,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2021-10-13 00:17:26,722 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) [2021-10-13 00:17:26,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-10-13 00:17:26,725 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 19 [2021-10-13 00:17:26,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:17:26,727 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-10-13 00:17:26,727 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) [2021-10-13 00:17:26,728 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-10-13 00:17:26,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 00:17:26,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:26,729 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:17:26,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:17:26,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:17:26,949 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-10-13 00:17:26,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:26,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1901459911, now seen corresponding path program 1 times [2021-10-13 00:17:26,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:17:26,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911900882] [2021-10-13 00:17:26,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:26,952 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:17:26,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:17:26,954 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:17:26,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 00:17:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:17:27,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 00:17:27,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:17:27,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-10-13 00:17:27,157 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 [2021-10-13 00:17:27,527 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 00:17:27,528 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 [2021-10-13 00:17:27,541 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 00:17:27,542 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 [2021-10-13 00:17:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:27,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:17:47,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:47,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:17:47,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911900882] [2021-10-13 00:17:47,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911900882] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:17:47,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:17:47,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-13 00:17:47,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584830873] [2021-10-13 00:17:47,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 00:17:47,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:17:47,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 00:17:47,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=197, Unknown=5, NotChecked=0, Total=240 [2021-10-13 00:17:47,760 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) [2021-10-13 00:18:16,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:18:16,574 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-10-13 00:18:16,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:18:16,575 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 [2021-10-13 00:18:16,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:18:16,577 INFO L225 Difference]: With dead ends: 32 [2021-10-13 00:18:16,577 INFO L226 Difference]: Without dead ends: 32 [2021-10-13 00:18:16,578 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 22343.1ms TimeCoverageRelationStatistics Valid=74, Invalid=341, Unknown=5, NotChecked=0, Total=420 [2021-10-13 00:18:16,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-13 00:18:16,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-13 00:18:16,584 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) [2021-10-13 00:18:16,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-10-13 00:18:16,585 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 19 [2021-10-13 00:18:16,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:18:16,586 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-10-13 00:18:16,586 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) [2021-10-13 00:18:16,587 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-10-13 00:18:16,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 00:18:16,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:18:16,588 INFO L512 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] [2021-10-13 00:18:16,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:18:16,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:18:16,802 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-10-13 00:18:16,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:18:16,803 INFO L82 PathProgramCache]: Analyzing trace with hash 294926047, now seen corresponding path program 1 times [2021-10-13 00:18:16,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:18:16,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476443583] [2021-10-13 00:18:16,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:18:16,805 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:18:16,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:18:16,806 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:18:16,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 00:18:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:18:16,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:18:16,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:18:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:18:17,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:18:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:18:17,846 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:18:17,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476443583] [2021-10-13 00:18:17,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476443583] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:18:17,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:18:17,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-10-13 00:18:17,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979450043] [2021-10-13 00:18:17,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:18:17,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:18:17,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:18:17,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:18:17,849 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) [2021-10-13 00:18:18,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:18:18,166 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-10-13 00:18:18,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:18:18,167 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 [2021-10-13 00:18:18,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:18:18,169 INFO L225 Difference]: With dead ends: 32 [2021-10-13 00:18:18,169 INFO L226 Difference]: Without dead ends: 32 [2021-10-13 00:18:18,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 315.8ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:18:18,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-13 00:18:18,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-10-13 00:18:18,174 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) [2021-10-13 00:18:18,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-10-13 00:18:18,175 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 27 [2021-10-13 00:18:18,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:18:18,176 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-10-13 00:18:18,176 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) [2021-10-13 00:18:18,176 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-10-13 00:18:18,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 00:18:18,177 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:18:18,177 INFO L512 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] [2021-10-13 00:18:18,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:18:18,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:18:18,378 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr11ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-10-13 00:18:18,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:18:18,379 INFO L82 PathProgramCache]: Analyzing trace with hash -43907359, now seen corresponding path program 1 times [2021-10-13 00:18:18,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:18:18,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504992651] [2021-10-13 00:18:18,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:18:18,381 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:18:18,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:18:18,382 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:18:18,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 00:18:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:18:18,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:18:18,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:18:18,670 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 [2021-10-13 00:18:18,756 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 [2021-10-13 00:18:18,790 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 15 treesize of output 7 [2021-10-13 00:18:18,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:18:18,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:18:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:18:19,050 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:18:19,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504992651] [2021-10-13 00:18:19,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504992651] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:18:19,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:18:19,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2021-10-13 00:18:19,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837634696] [2021-10-13 00:18:19,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:18:19,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:18:19,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:18:19,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:18:19,053 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) [2021-10-13 00:18:19,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:18:19,293 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-10-13 00:18:19,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:18:19,296 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 [2021-10-13 00:18:19,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:18:19,297 INFO L225 Difference]: With dead ends: 30 [2021-10-13 00:18:19,297 INFO L226 Difference]: Without dead ends: 30 [2021-10-13 00:18:19,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 208.9ms TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:18:19,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-13 00:18:19,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-13 00:18:19,302 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) [2021-10-13 00:18:19,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-10-13 00:18:19,304 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 29 [2021-10-13 00:18:19,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:18:19,304 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-10-13 00:18:19,305 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) [2021-10-13 00:18:19,305 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-10-13 00:18:19,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 00:18:19,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:18:19,306 INFO L512 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] [2021-10-13 00:18:19,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:18:19,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:18:19,513 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr12ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-10-13 00:18:19,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:18:19,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1361128031, now seen corresponding path program 1 times [2021-10-13 00:18:19,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:18:19,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88174727] [2021-10-13 00:18:19,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:18:19,514 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:18:19,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:18:19,519 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:18:19,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 00:18:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:18:19,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:18:19,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:18:20,259 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 [2021-10-13 00:18:20,469 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 [2021-10-13 00:18:20,534 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 [2021-10-13 00:18:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:18:20,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:18:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:18:21,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:18:21,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88174727] [2021-10-13 00:18:21,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88174727] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:18:21,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:18:21,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 8] imperfect sequences [] total 17 [2021-10-13 00:18:21,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028048364] [2021-10-13 00:18:21,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 00:18:21,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:18:21,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 00:18:21,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:18:21,340 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) [2021-10-13 00:18:22,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:18:22,360 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-10-13 00:18:22,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:18:22,361 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 [2021-10-13 00:18:22,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:18:22,365 INFO L225 Difference]: With dead ends: 30 [2021-10-13 00:18:22,365 INFO L226 Difference]: Without dead ends: 30 [2021-10-13 00:18:22,366 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 866.7ms TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:18:22,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-13 00:18:22,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-10-13 00:18:22,370 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) [2021-10-13 00:18:22,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-10-13 00:18:22,371 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 30 [2021-10-13 00:18:22,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:18:22,372 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-10-13 00:18:22,372 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) [2021-10-13 00:18:22,372 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-10-13 00:18:22,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 00:18:22,373 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:18:22,374 INFO L512 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] [2021-10-13 00:18:22,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:18:22,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:18:22,580 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr13ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-10-13 00:18:22,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:18:22,580 INFO L82 PathProgramCache]: Analyzing trace with hash 754704099, now seen corresponding path program 1 times [2021-10-13 00:18:22,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:18:22,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199973889] [2021-10-13 00:18:22,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:18:22,588 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:18:22,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:18:22,589 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:18:22,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 00:18:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:18:22,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 00:18:22,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:18:22,826 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 [2021-10-13 00:18:23,103 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 00:18:23,104 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 [2021-10-13 00:18:23,206 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 [2021-10-13 00:18:23,439 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 [2021-10-13 00:18:23,498 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 [2021-10-13 00:18:23,742 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-13 00:18:23,743 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 [2021-10-13 00:18:23,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:18:23,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:18:26,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:18:26,702 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:18:26,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199973889] [2021-10-13 00:18:26,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199973889] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 00:18:26,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:18:26,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 23 [2021-10-13 00:18:26,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945842574] [2021-10-13 00:18:26,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:18:26,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:18:26,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:18:26,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=484, Unknown=1, NotChecked=0, Total=552 [2021-10-13 00:18:26,705 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) [2021-10-13 00:18:27,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:18:27,424 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-10-13 00:18:27,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:18:27,426 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 [2021-10-13 00:18:27,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:18:27,427 INFO L225 Difference]: With dead ends: 28 [2021-10-13 00:18:27,427 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 00:18:27,428 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 3162.2ms TimeCoverageRelationStatistics Valid=98, Invalid=657, Unknown=1, NotChecked=0, Total=756 [2021-10-13 00:18:27,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 00:18:27,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-13 00:18:27,432 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) [2021-10-13 00:18:27,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-10-13 00:18:27,433 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 31 [2021-10-13 00:18:27,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:18:27,434 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-10-13 00:18:27,434 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) [2021-10-13 00:18:27,435 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-10-13 00:18:27,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 00:18:27,436 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:18:27,436 INFO L512 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] [2021-10-13 00:18:27,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:18:27,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:18:27,641 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-10-13 00:18:27,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:18:27,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1920990692, now seen corresponding path program 1 times [2021-10-13 00:18:27,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:18:27,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901703671] [2021-10-13 00:18:27,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:18:27,642 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:18:27,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:18:27,643 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:18:27,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 00:18:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:18:27,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 00:18:27,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:18:27,961 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 [2021-10-13 00:18:28,492 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 [2021-10-13 00:18:28,738 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 [2021-10-13 00:18:28,806 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 [2021-10-13 00:18:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:18:31,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:18:44,414 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 [2021-10-13 00:18:44,840 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 [2021-10-13 00:18:45,246 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 [2021-10-13 00:18:46,004 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 [2021-10-13 00:19:05,840 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 [2021-10-13 00:19:11,265 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 [2021-10-13 00:19:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2021-10-13 00:19:11,319 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:19:11,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901703671] [2021-10-13 00:19:11,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901703671] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:11,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:11,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [18] total 33 [2021-10-13 00:19:11,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607894963] [2021-10-13 00:19:11,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 00:19:11,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:19:11,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 00:19:11,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=654, Unknown=38, NotChecked=342, Total=1122 [2021-10-13 00:19:11,322 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) [2021-10-13 00:19:19,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:19,233 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-10-13 00:19:19,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 00:19:19,234 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 [2021-10-13 00:19:19,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:19,235 INFO L225 Difference]: With dead ends: 27 [2021-10-13 00:19:19,235 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:19:19,236 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 39678.1ms TimeCoverageRelationStatistics Valid=156, Invalid=1236, Unknown=38, NotChecked=462, Total=1892 [2021-10-13 00:19:19,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:19:19,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:19:19,236 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) [2021-10-13 00:19:19,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:19:19,237 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-10-13 00:19:19,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:19,237 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:19:19,237 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) [2021-10-13 00:19:19,238 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:19:19,238 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:19:19,241 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION [2021-10-13 00:19:19,241 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION [2021-10-13 00:19:19,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2REQUIRES_VIOLATION [2021-10-13 00:19:19,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr3REQUIRES_VIOLATION [2021-10-13 00:19:19,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr4REQUIRES_VIOLATION [2021-10-13 00:19:19,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr5REQUIRES_VIOLATION [2021-10-13 00:19:19,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr6REQUIRES_VIOLATION [2021-10-13 00:19:19,243 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr7REQUIRES_VIOLATION [2021-10-13 00:19:19,243 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:19:19,243 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:19:19,243 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr10ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:19:19,244 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr11ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:19:19,244 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr12ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:19:19,244 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr13ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:19:19,244 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr14ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:19:19,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:19:19,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:19:19,458 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:19:19,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:19:19 BoogieIcfgContainer [2021-10-13 00:19:19,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:19:19,464 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:19:19,465 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:19:19,466 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:19:19,466 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:17:24" (3/4) ... [2021-10-13 00:19:19,469 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:19:19,475 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:19:19,476 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-13 00:19:19,476 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure myexit [2021-10-13 00:19:19,476 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-10-13 00:19:19,477 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-10-13 00:19:19,477 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-13 00:19:19,477 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure alloc_node [2021-10-13 00:19:19,482 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-13 00:19:19,483 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-13 00:19:19,483 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:19:19,483 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:19:19,526 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:19:19,527 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:19:19,528 INFO L168 Benchmark]: Toolchain (without parser) took 116125.52 ms. Allocated memory was 73.4 MB in the beginning and 94.4 MB in the end (delta: 21.0 MB). Free memory was 53.7 MB in the beginning and 42.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 33.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:19:19,528 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 73.4 MB. Free memory is still 54.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:19:19,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 617.27 ms. Allocated memory is still 73.4 MB. Free memory was 53.6 MB in the beginning and 53.4 MB in the end (delta: 249.8 kB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:19:19,530 INFO L168 Benchmark]: Boogie Preprocessor took 75.16 ms. Allocated memory is still 73.4 MB. Free memory was 53.4 MB in the beginning and 50.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:19:19,530 INFO L168 Benchmark]: RCFGBuilder took 711.73 ms. Allocated memory was 73.4 MB in the beginning and 94.4 MB in the end (delta: 21.0 MB). Free memory was 50.8 MB in the beginning and 73.0 MB in the end (delta: -22.2 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:19:19,531 INFO L168 Benchmark]: TraceAbstraction took 114649.07 ms. Allocated memory is still 94.4 MB. Free memory was 72.2 MB in the beginning and 45.0 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:19:19,531 INFO L168 Benchmark]: Witness Printer took 62.94 ms. Allocated memory is still 94.4 MB. Free memory was 45.0 MB in the beginning and 42.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:19:19,533 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 73.4 MB. Free memory is still 54.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 617.27 ms. Allocated memory is still 73.4 MB. Free memory was 53.6 MB in the beginning and 53.4 MB in the end (delta: 249.8 kB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.16 ms. Allocated memory is still 73.4 MB. Free memory was 53.4 MB in the beginning and 50.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 711.73 ms. Allocated memory was 73.4 MB in the beginning and 94.4 MB in the end (delta: 21.0 MB). Free memory was 50.8 MB in the beginning and 73.0 MB in the end (delta: -22.2 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 114649.07 ms. Allocated memory is still 94.4 MB. Free memory was 72.2 MB in the beginning and 45.0 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. * Witness Printer took 62.94 ms. Allocated memory is still 94.4 MB. Free memory was 45.0 MB in the beginning and 42.0 MB in the end (delta: 3.1 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 114579.4ms, OverallIterations: 7, TraceHistogramMax: 2, EmptinessCheckTime: 22.0ms, AutomataDifference: 39748.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 115 SDtfs, 189 SDslu, 558 SDs, 0 SdLazy, 1235 SolverSat, 69 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 31707.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 402 GetRequests, 246 SyntacticMatches, 13 SemanticMatches, 143 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 66907.9ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 54.3ms AutomataMinimizationTime, 7 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 61.6ms SsaConstructionTime, 258.3ms SatisfiabilityAnalysisTime, 71739.5ms 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! [2021-10-13 00:19:19,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0a9713-d9f5-4073-ae78-f22325bc88b0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...