./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y --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 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:51:40,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:51:40,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:51:40,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:51:40,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:51:40,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:51:40,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:51:40,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:51:40,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:51:40,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:51:40,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:51:40,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:51:40,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:51:40,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:51:40,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:51:40,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:51:40,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:51:40,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:51:40,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:51:40,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:51:40,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:51:40,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:51:40,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:51:40,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:51:40,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:51:40,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:51:40,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:51:40,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:51:40,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:51:40,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:51:40,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:51:40,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:51:40,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:51:40,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:51:40,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:51:40,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:51:40,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:51:40,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:51:40,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:51:40,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:51:40,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:51:40,185 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 18:51:40,244 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:51:40,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:51:40,249 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:51:40,249 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:51:40,252 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:51:40,252 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:51:40,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:51:40,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:51:40,254 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:51:40,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:51:40,256 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:51:40,256 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:51:40,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:51:40,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:51:40,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:51:40,257 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:51:40,258 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:51:40,258 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:51:40,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:51:40,259 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:51:40,259 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:51:40,259 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:51:40,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:51:40,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:51:40,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:51:40,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:51:40,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:51:40,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:51:40,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:51:40,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:51:40,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:51:40,265 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_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2021-11-13 18:51:40,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:51:40,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:51:40,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:51:40,715 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:51:40,716 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:51:40,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-11-13 18:51:40,817 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/data/1b0f48b8a/520856e3a5dc4b1d889f5dfd9c5b7139/FLAG6452fe740 [2021-11-13 18:51:41,570 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:51:41,570 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-11-13 18:51:41,598 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/data/1b0f48b8a/520856e3a5dc4b1d889f5dfd9c5b7139/FLAG6452fe740 [2021-11-13 18:51:41,813 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/data/1b0f48b8a/520856e3a5dc4b1d889f5dfd9c5b7139 [2021-11-13 18:51:41,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:51:41,819 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:51:41,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:51:41,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:51:41,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:51:41,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:51:41" (1/1) ... [2021-11-13 18:51:41,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f85ed7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:41, skipping insertion in model container [2021-11-13 18:51:41,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:51:41" (1/1) ... [2021-11-13 18:51:41,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:51:41,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:51:42,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:51:42,261 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-13 18:51:42,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@64815097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:42, skipping insertion in model container [2021-11-13 18:51:42,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:51:42,263 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 18:51:42,266 INFO L158 Benchmark]: Toolchain (without parser) took 445.39ms. Allocated memory is still 119.5MB. Free memory was 88.0MB in the beginning and 92.9MB in the end (delta: -4.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:51:42,267 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 119.5MB. Free memory is still 73.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:51:42,268 INFO L158 Benchmark]: CACSL2BoogieTranslator took 441.79ms. Allocated memory is still 119.5MB. Free memory was 87.7MB in the beginning and 92.9MB in the end (delta: -5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 18:51:42,270 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 119.5MB. Free memory is still 73.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 441.79ms. Allocated memory is still 119.5MB. Free memory was 87.7MB in the beginning and 92.9MB in the end (delta: -5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y --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 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:51:45,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:51:45,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:51:45,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:51:45,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:51:45,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:51:45,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:51:45,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:51:45,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:51:45,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:51:45,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:51:45,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:51:45,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:51:45,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:51:45,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:51:45,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:51:45,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:51:45,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:51:45,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:51:45,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:51:45,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:51:45,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:51:45,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:51:45,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:51:45,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:51:45,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:51:45,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:51:45,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:51:45,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:51:45,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:51:45,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:51:45,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:51:45,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:51:45,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:51:45,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:51:45,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:51:45,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:51:45,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:51:45,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:51:45,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:51:45,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:51:45,269 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 18:51:45,300 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:51:45,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:51:45,301 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:51:45,301 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:51:45,302 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:51:45,302 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:51:45,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:51:45,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:51:45,303 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:51:45,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:51:45,304 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:51:45,304 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:51:45,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:51:45,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:51:45,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:51:45,305 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:51:45,305 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:51:45,306 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:51:45,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:51:45,306 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:51:45,306 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:51:45,307 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:51:45,307 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:51:45,307 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:51:45,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:51:45,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:51:45,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:51:45,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:51:45,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:51:45,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:51:45,309 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:51:45,309 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:51:45,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:51:45,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:51:45,310 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_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2021-11-13 18:51:45,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:51:45,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:51:45,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:51:45,798 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:51:45,799 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:51:45,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-11-13 18:51:45,884 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/data/4ac03ae02/17b4597b23a746d8b1ca72b3320abc50/FLAGf9271e8f5 [2021-11-13 18:51:46,730 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:51:46,733 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-11-13 18:51:46,757 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/data/4ac03ae02/17b4597b23a746d8b1ca72b3320abc50/FLAGf9271e8f5 [2021-11-13 18:51:46,927 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/data/4ac03ae02/17b4597b23a746d8b1ca72b3320abc50 [2021-11-13 18:51:46,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:51:46,933 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:51:46,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:51:46,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:51:46,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:51:46,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:51:46" (1/1) ... [2021-11-13 18:51:46,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17bff895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:46, skipping insertion in model container [2021-11-13 18:51:46,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:51:46" (1/1) ... [2021-11-13 18:51:46,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:51:47,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:51:47,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:51:47,530 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 18:51:47,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:51:47,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:51:47,578 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:51:47,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:51:47,682 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:51:47,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:47 WrapperNode [2021-11-13 18:51:47,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:51:47,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:51:47,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:51:47,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:51:47,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:47" (1/1) ... [2021-11-13 18:51:47,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:47" (1/1) ... [2021-11-13 18:51:47,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:47" (1/1) ... [2021-11-13 18:51:47,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:47" (1/1) ... [2021-11-13 18:51:47,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:47" (1/1) ... [2021-11-13 18:51:47,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:47" (1/1) ... [2021-11-13 18:51:47,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:47" (1/1) ... [2021-11-13 18:51:47,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:51:47,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:51:47,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:51:47,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:51:47,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:47" (1/1) ... [2021-11-13 18:51:47,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:51:47,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:51:47,847 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:51:47,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:51:47,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 18:51:47,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:51:47,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:51:47,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 18:51:47,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 18:51:47,905 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-13 18:51:47,905 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2021-11-13 18:51:47,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 18:51:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 18:51:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 18:51:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 18:51:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 18:51:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 18:51:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 18:51:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 18:51:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 18:51:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 18:51:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 18:51:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 18:51:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 18:51:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 18:51:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 18:51:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 18:51:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 18:51:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 18:51:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 18:51:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 18:51:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 18:51:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 18:51:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 18:51:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 18:51:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 18:51:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 18:51:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 18:51:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 18:51:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 18:51:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 18:51:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 18:51:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 18:51:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 18:51:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 18:51:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 18:51:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 18:51:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 18:51:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 18:51:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 18:51:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 18:51:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 18:51:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 18:51:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 18:51:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 18:51:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 18:51:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 18:51:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 18:51:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 18:51:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 18:51:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 18:51:47,921 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 18:51:47,921 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 18:51:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 18:51:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 18:51:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 18:51:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 18:51:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 18:51:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-11-13 18:51:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 18:51:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 18:51:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 18:51:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 18:51:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 18:51:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 18:51:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 18:51:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 18:51:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 18:51:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 18:51:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 18:51:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 18:51:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 18:51:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 18:51:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 18:51:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 18:51:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 18:51:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 18:51:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 18:51:47,932 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 18:51:47,932 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 18:51:47,932 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 18:51:47,933 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 18:51:47,933 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 18:51:47,933 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 18:51:47,933 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 18:51:47,934 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 18:51:47,934 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 18:51:47,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 18:51:47,934 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 18:51:47,934 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 18:51:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 18:51:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 18:51:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 18:51:47,936 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 18:51:47,936 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 18:51:47,936 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 18:51:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 18:51:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 18:51:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 18:51:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 18:51:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 18:51:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 18:51:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 18:51:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 18:51:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 18:51:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 18:51:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 18:51:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-13 18:51:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2021-11-13 18:51:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:51:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 18:51:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:51:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:51:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:51:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 18:51:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:51:47,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:51:48,475 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-13 18:51:48,719 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:51:48,719 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:51:48,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:51:48 BoogieIcfgContainer [2021-11-13 18:51:48,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:51:48,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:51:48,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:51:48,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:51:48,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:51:46" (1/3) ... [2021-11-13 18:51:48,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60df6eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:51:48, skipping insertion in model container [2021-11-13 18:51:48,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:47" (2/3) ... [2021-11-13 18:51:48,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60df6eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:51:48, skipping insertion in model container [2021-11-13 18:51:48,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:51:48" (3/3) ... [2021-11-13 18:51:48,749 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2021-11-13 18:51:48,756 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:51:48,757 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-13 18:51:48,835 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:51:48,845 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:51:48,846 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-13 18:51:48,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 20 states have (on average 1.65) internal successors, (33), 32 states have internal predecessors, (33), 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) [2021-11-13 18:51:48,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 18:51:48,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:51:48,897 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:51:48,898 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-11-13 18:51:48,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:51:48,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1580649199, now seen corresponding path program 1 times [2021-11-13 18:51:48,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:51:48,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033681575] [2021-11-13 18:51:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:48,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:51:48,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:51:48,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:51:48,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:51:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:49,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:51:49,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:51:49,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:51:49,686 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-13 18:51:49,687 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 [2021-11-13 18:51:49,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:51:49,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:51:50,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:51:50,332 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:51:50,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033681575] [2021-11-13 18:51:50,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033681575] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:51:50,334 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:51:50,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-11-13 18:51:50,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429513392] [2021-11-13 18:51:50,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:51:50,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:51:50,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:51:50,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:51:50,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:51:50,392 INFO L87 Difference]: Start difference. First operand has 41 states, 20 states have (on average 1.65) internal successors, (33), 32 states have internal predecessors, (33), 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) [2021-11-13 18:51:50,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:51:50,714 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-11-13 18:51:50,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:51:50,717 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 [2021-11-13 18:51:50,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:51:50,726 INFO L225 Difference]: With dead ends: 42 [2021-11-13 18:51:50,726 INFO L226 Difference]: Without dead ends: 36 [2021-11-13 18:51:50,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:51:50,733 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 175.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.05ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 205.23ms IncrementalHoareTripleChecker+Time [2021-11-13 18:51:50,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 89 Invalid, 125 Unknown, 0 Unchecked, 6.05ms Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 31 Unchecked, 205.23ms Time] [2021-11-13 18:51:50,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-13 18:51:50,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-13 18:51:50,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 28 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:51:50,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 35 transitions. [2021-11-13 18:51:50,780 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 35 transitions. Word has length 19 [2021-11-13 18:51:50,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:51:50,780 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 35 transitions. [2021-11-13 18:51:50,781 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) [2021-11-13 18:51:50,781 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 35 transitions. [2021-11-13 18:51:50,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 18:51:50,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:51:50,782 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:51:50,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:51:50,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:51:50,997 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-11-13 18:51:50,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:51:50,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1580649198, now seen corresponding path program 1 times [2021-11-13 18:51:50,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:51:50,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106932929] [2021-11-13 18:51:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:51,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:51:51,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:51:51,001 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:51:51,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:51:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:51,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 18:51:51,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:51:51,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:51:51,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:51:51,675 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 18:51:51,676 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 [2021-11-13 18:51:51,693 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:51:51,693 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 [2021-11-13 18:51:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:51:51,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:12,445 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:12,445 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:52:12,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106932929] [2021-11-13 18:52:12,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106932929] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:52:12,446 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:52:12,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-11-13 18:52:12,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68058056] [2021-11-13 18:52:12,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:52:12,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 18:52:12,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:52:12,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 18:52:12,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=197, Unknown=5, NotChecked=0, Total=240 [2021-11-13 18:52:12,451 INFO L87 Difference]: Start difference. First operand 36 states and 35 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) [2021-11-13 18:52:13,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:13,004 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions. [2021-11-13 18:52:13,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:52:13,005 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 [2021-11-13 18:52:13,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:13,006 INFO L225 Difference]: With dead ends: 34 [2021-11-13 18:52:13,006 INFO L226 Difference]: Without dead ends: 34 [2021-11-13 18:52:13,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=60, Invalid=277, Unknown=5, NotChecked=0, Total=342 [2021-11-13 18:52:13,009 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 15 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 180.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.50ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 132 IncrementalHoareTripleChecker+Unchecked, 205.51ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:13,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 87 Invalid, 192 Unknown, 0 Unchecked, 4.50ms Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 132 Unchecked, 205.51ms Time] [2021-11-13 18:52:13,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-13 18:52:13,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-13 18:52:13,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 26 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:52:13,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 33 transitions. [2021-11-13 18:52:13,020 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 33 transitions. Word has length 19 [2021-11-13 18:52:13,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:13,020 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 33 transitions. [2021-11-13 18:52:13,021 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) [2021-11-13 18:52:13,021 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 33 transitions. [2021-11-13 18:52:13,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-13 18:52:13,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:13,022 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:13,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:13,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:13,237 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-11-13 18:52:13,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:13,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1414543091, now seen corresponding path program 1 times [2021-11-13 18:52:13,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:13,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430270768] [2021-11-13 18:52:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:13,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:13,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:13,241 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:13,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:52:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:13,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:52:13,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:13,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:52:13,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:13,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-13 18:52:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:52:14,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:52:14,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430270768] [2021-11-13 18:52:14,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430270768] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:52:14,040 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:52:14,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-11-13 18:52:14,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968062522] [2021-11-13 18:52:14,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:52:14,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:52:14,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:52:14,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:52:14,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:52:14,043 INFO L87 Difference]: Start difference. First operand 34 states and 33 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-13 18:52:14,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:14,355 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2021-11-13 18:52:14,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:52:14,356 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 21 [2021-11-13 18:52:14,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:14,357 INFO L225 Difference]: With dead ends: 32 [2021-11-13 18:52:14,357 INFO L226 Difference]: Without dead ends: 32 [2021-11-13 18:52:14,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:52:14,360 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 50 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 249.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.57ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 278.63ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:14,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 107 Invalid, 83 Unknown, 0 Unchecked, 2.57ms Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 278.63ms Time] [2021-11-13 18:52:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-13 18:52:14,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-11-13 18:52:14,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 24 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:52:14,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 31 transitions. [2021-11-13 18:52:14,368 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 31 transitions. Word has length 21 [2021-11-13 18:52:14,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:14,368 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 31 transitions. [2021-11-13 18:52:14,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-13 18:52:14,369 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2021-11-13 18:52:14,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 18:52:14,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:14,370 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:14,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:14,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:14,574 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-11-13 18:52:14,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:14,576 INFO L85 PathProgramCache]: Analyzing trace with hash 901162851, now seen corresponding path program 1 times [2021-11-13 18:52:14,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:14,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545774967] [2021-11-13 18:52:14,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:14,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:14,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:14,579 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:14,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:52:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:14,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:52:14,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:14,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:52:14,826 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 21 treesize of output 17 [2021-11-13 18:52:14,877 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 21 treesize of output 13 [2021-11-13 18:52:14,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:52:14,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:15,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:52:15,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:52:15,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545774967] [2021-11-13 18:52:15,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545774967] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:15,088 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:15,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-13 18:52:15,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795310219] [2021-11-13 18:52:15,088 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:15,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:52:15,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:52:15,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:52:15,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:52:15,095 INFO L87 Difference]: Start difference. First operand 32 states and 31 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-11-13 18:52:15,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:15,373 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2021-11-13 18:52:15,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:52:15,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 22 [2021-11-13 18:52:15,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:15,375 INFO L225 Difference]: With dead ends: 31 [2021-11-13 18:52:15,375 INFO L226 Difference]: Without dead ends: 31 [2021-11-13 18:52:15,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:52:15,377 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 174.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.18ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 199.77ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:15,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 75 Invalid, 65 Unknown, 0 Unchecked, 2.18ms Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 199.77ms Time] [2021-11-13 18:52:15,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-13 18:52:15,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-13 18:52:15,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:52:15,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 30 transitions. [2021-11-13 18:52:15,392 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 30 transitions. Word has length 22 [2021-11-13 18:52:15,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:15,393 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 30 transitions. [2021-11-13 18:52:15,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-11-13 18:52:15,394 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 30 transitions. [2021-11-13 18:52:15,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 18:52:15,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:15,395 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:15,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:15,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:15,596 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-11-13 18:52:15,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:15,597 INFO L85 PathProgramCache]: Analyzing trace with hash 901162852, now seen corresponding path program 1 times [2021-11-13 18:52:15,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:15,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471649189] [2021-11-13 18:52:15,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:15,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:15,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:15,600 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:15,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:52:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:15,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:52:15,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:15,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:52:15,912 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 [2021-11-13 18:52:15,924 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 17 treesize of output 13 [2021-11-13 18:52:15,985 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 31 treesize of output 23 [2021-11-13 18:52:15,991 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 20 treesize of output 12 [2021-11-13 18:52:16,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:52:16,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:16,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:52:16,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:52:16,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471649189] [2021-11-13 18:52:16,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471649189] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:16,825 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:16,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-13 18:52:16,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118414079] [2021-11-13 18:52:16,825 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:16,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:52:16,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:52:16,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:52:16,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:52:16,828 INFO L87 Difference]: Start difference. First operand 31 states and 30 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:52:17,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:17,284 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions. [2021-11-13 18:52:17,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:52:17,285 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 22 [2021-11-13 18:52:17,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:17,286 INFO L225 Difference]: With dead ends: 30 [2021-11-13 18:52:17,287 INFO L226 Difference]: Without dead ends: 30 [2021-11-13 18:52:17,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:52:17,289 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 276.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.53ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 310.61ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:17,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 119 Invalid, 60 Unknown, 0 Unchecked, 2.53ms Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 310.61ms Time] [2021-11-13 18:52:17,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-13 18:52:17,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-13 18:52:17,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:52:17,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 29 transitions. [2021-11-13 18:52:17,296 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 29 transitions. Word has length 22 [2021-11-13 18:52:17,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:17,297 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 29 transitions. [2021-11-13 18:52:17,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:52:17,298 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 29 transitions. [2021-11-13 18:52:17,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-13 18:52:17,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:17,299 INFO L514 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] [2021-11-13 18:52:17,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-13 18:52:17,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:17,540 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr9ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-11-13 18:52:17,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:17,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1584820282, now seen corresponding path program 1 times [2021-11-13 18:52:17,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:17,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103840145] [2021-11-13 18:52:17,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:17,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:17,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:17,543 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:17,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:52:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:17,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:52:17,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:18,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:52:18,543 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:52:18,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103840145] [2021-11-13 18:52:18,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103840145] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:52:18,543 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:52:18,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-11-13 18:52:18,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026963214] [2021-11-13 18:52:18,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:52:18,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:52:18,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:52:18,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:52:18,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:52:18,545 INFO L87 Difference]: Start difference. First operand 30 states and 29 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 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) [2021-11-13 18:52:18,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:18,869 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2021-11-13 18:52:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:52:18,870 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 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 26 [2021-11-13 18:52:18,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:18,871 INFO L225 Difference]: With dead ends: 29 [2021-11-13 18:52:18,871 INFO L226 Difference]: Without dead ends: 29 [2021-11-13 18:52:18,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:52:18,873 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 16 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 225.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.21ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 265.53ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:18,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 57 Invalid, 104 Unknown, 0 Unchecked, 2.21ms Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 13 Unchecked, 265.53ms Time] [2021-11-13 18:52:18,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-13 18:52:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-13 18:52:18,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.0) internal successors, (21), 21 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:52:18,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2021-11-13 18:52:18,879 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 26 [2021-11-13 18:52:18,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:18,879 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2021-11-13 18:52:18,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 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) [2021-11-13 18:52:18,880 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2021-11-13 18:52:18,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-13 18:52:18,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:18,881 INFO L514 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] [2021-11-13 18:52:18,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:19,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:19,087 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr11ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-11-13 18:52:19,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:19,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1701102057, now seen corresponding path program 1 times [2021-11-13 18:52:19,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:19,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599412099] [2021-11-13 18:52:19,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:19,088 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:19,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:19,089 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:19,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:52:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:52:19,219 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:52:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:52:19,306 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-13 18:52:19,306 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 18:52:19,308 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr11ENSURES_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2021-11-13 18:52:19,310 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (10 of 12 remaining) [2021-11-13 18:52:19,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (9 of 12 remaining) [2021-11-13 18:52:19,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (8 of 12 remaining) [2021-11-13 18:52:19,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (7 of 12 remaining) [2021-11-13 18:52:19,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (6 of 12 remaining) [2021-11-13 18:52:19,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (5 of 12 remaining) [2021-11-13 18:52:19,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (4 of 12 remaining) [2021-11-13 18:52:19,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (3 of 12 remaining) [2021-11-13 18:52:19,313 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8ASSERT_VIOLATIONMEMORY_FREE (2 of 12 remaining) [2021-11-13 18:52:19,313 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9ASSERT_VIOLATIONMEMORY_FREE (1 of 12 remaining) [2021-11-13 18:52:19,313 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10ASSERT_VIOLATIONMEMORY_FREE (0 of 12 remaining) [2021-11-13 18:52:19,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:19,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:19,518 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:19,522 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:52:19,532 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-11-13 18:52:19,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:52:19 BoogieIcfgContainer [2021-11-13 18:52:19,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 18:52:19,554 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 18:52:19,555 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 18:52:19,555 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 18:52:19,555 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:51:48" (3/4) ... [2021-11-13 18:52:19,560 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-13 18:52:19,560 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 18:52:19,561 INFO L158 Benchmark]: Toolchain (without parser) took 32627.76ms. Allocated memory was 62.9MB in the beginning and 113.2MB in the end (delta: 50.3MB). Free memory was 41.2MB in the beginning and 69.8MB in the end (delta: -28.6MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2021-11-13 18:52:19,561 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 62.9MB. Free memory is still 42.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:52:19,562 INFO L158 Benchmark]: CACSL2BoogieTranslator took 747.07ms. Allocated memory is still 62.9MB. Free memory was 41.0MB in the beginning and 36.9MB in the end (delta: 4.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:52:19,563 INFO L158 Benchmark]: Boogie Preprocessor took 119.88ms. Allocated memory is still 62.9MB. Free memory was 36.9MB in the beginning and 34.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:52:19,563 INFO L158 Benchmark]: RCFGBuilder took 919.96ms. Allocated memory is still 62.9MB. Free memory was 34.2MB in the beginning and 34.5MB in the end (delta: -314.3kB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2021-11-13 18:52:19,564 INFO L158 Benchmark]: TraceAbstraction took 30823.72ms. Allocated memory was 62.9MB in the beginning and 113.2MB in the end (delta: 50.3MB). Free memory was 34.0MB in the beginning and 69.8MB in the end (delta: -35.8MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2021-11-13 18:52:19,564 INFO L158 Benchmark]: Witness Printer took 5.60ms. Allocated memory is still 113.2MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:52:19,571 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 62.9MB. Free memory is still 42.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 747.07ms. Allocated memory is still 62.9MB. Free memory was 41.0MB in the beginning and 36.9MB in the end (delta: 4.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 119.88ms. Allocated memory is still 62.9MB. Free memory was 36.9MB in the beginning and 34.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 919.96ms. Allocated memory is still 62.9MB. Free memory was 34.2MB in the beginning and 34.5MB in the end (delta: -314.3kB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * TraceAbstraction took 30823.72ms. Allocated memory was 62.9MB in the beginning and 113.2MB in the end (delta: 50.3MB). Free memory was 34.0MB in the beginning and 69.8MB in the end (delta: -35.8MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. * Witness Printer took 5.60ms. Allocated memory is still 113.2MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L569] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={1:0}] [L566] return temp; VAL [\result={1:0}, temp={1:0}] [L569] RET, EXPR alloc_node() VAL [alloc_node()={1:0}] [L569] struct node* s = alloc_node(); [L570] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={2:0}] [L566] return temp; VAL [\result={2:0}, temp={2:0}] [L570] RET, EXPR alloc_node() VAL [alloc_node()={2:0}, s={1:0}] [L570] s->next = alloc_node() VAL [alloc_node()={2:0}, s={1:0}] [L571] EXPR s->next VAL [s={1:0}, s->next={2:0}] [L571] *s = *(s->next) VAL [*s = *(s->next)={0:0}, s={1:0}, s->next={2:0}] [L572] free(s) VAL [s={1:0}] [L572] free(s) VAL [s={1:0}] [L572] free(s) [L573] return 0; VAL [\result=0, s={1:0}] - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 54 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 30.7s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 116 SdHoareTripleChecker+Valid, 1465.29ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 116 mSDsluCounter, 534 SdHoareTripleChecker+Invalid, 1281.62ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 176 IncrementalHoareTripleChecker+Unchecked, 427 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 443 IncrementalHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 107 mSDtfsCounter, 443 mSolverCounterSat, 20.05ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 266 GetRequests, 187 SyntacticMatches, 9 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 19.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 25.4s InterpolantComputationTime, 157 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 246 ConstructedInterpolants, 30 QuantifiedInterpolants, 1782 SizeOfPredicates, 24 NumberOfNonLiveVariables, 444 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 28/60 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-13 18:52:19,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d79289-808d-416d-b8ee-b59c0883ac44/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample