./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c4d407f41629f864eb5689f703f67280cbb5237 ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c4d407f41629f864eb5689f703f67280cbb5237 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:53:26,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:53:26,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:53:26,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:53:26,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:53:26,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:53:26,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:53:26,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:53:26,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:53:26,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:53:26,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:53:26,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:53:26,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:53:26,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:53:26,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:53:26,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:53:26,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:53:26,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:53:26,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:53:26,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:53:26,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:53:26,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:53:26,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:53:26,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:53:26,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:53:26,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:53:26,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:53:26,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:53:26,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:53:26,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:53:26,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:53:26,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:53:26,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:53:26,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:53:26,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:53:26,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:53:26,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:53:26,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:53:26,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:53:26,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:53:26,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:53:26,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 00:53:26,362 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:53:26,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:53:26,365 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:53:26,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:53:26,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:53:26,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:53:26,370 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:53:26,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:53:26,371 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:53:26,371 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:53:26,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:53:26,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:53:26,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:53:26,374 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:53:26,374 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:53:26,374 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:53:26,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:53:26,375 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:53:26,375 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:53:26,375 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:53:26,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:53:26,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:53:26,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:53:26,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:53:26,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:53:26,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:53:26,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:53:26,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:53:26,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:53:26,378 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_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c4d407f41629f864eb5689f703f67280cbb5237 [2021-10-13 00:53:26,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:53:26,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:53:26,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:53:26,796 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:53:26,798 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:53:26,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i [2021-10-13 00:53:26,898 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/data/70947f2b2/6b32d25111894dc8b46938f25319ba82/FLAG760153d61 [2021-10-13 00:53:27,804 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:53:27,805 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i [2021-10-13 00:53:27,840 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/data/70947f2b2/6b32d25111894dc8b46938f25319ba82/FLAG760153d61 [2021-10-13 00:53:27,961 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/data/70947f2b2/6b32d25111894dc8b46938f25319ba82 [2021-10-13 00:53:27,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:53:27,968 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:53:27,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:53:27,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:53:27,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:53:27,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:53:27" (1/1) ... [2021-10-13 00:53:27,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30fac330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:27, skipping insertion in model container [2021-10-13 00:53:27,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:53:27" (1/1) ... [2021-10-13 00:53:27,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:53:28,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:53:28,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:53:28,878 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-13 00:53:28,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6f052f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:28, skipping insertion in model container [2021-10-13 00:53:28,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:53:28,883 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-13 00:53:28,888 INFO L168 Benchmark]: Toolchain (without parser) took 916.76 ms. Allocated memory is still 140.5 MB. Free memory was 108.1 MB in the beginning and 112.6 MB in the end (delta: -4.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:53:28,889 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 92.3 MB. Free memory is still 49.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:53:28,892 INFO L168 Benchmark]: CACSL2BoogieTranslator took 911.05 ms. Allocated memory is still 140.5 MB. Free memory was 107.8 MB in the beginning and 112.6 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:53:28,897 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 92.3 MB. Free memory is still 49.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 911.05 ms. Allocated memory is still 140.5 MB. Free memory was 107.8 MB in the beginning and 112.6 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:53:32,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:53:32,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:53:32,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:53:32,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:53:32,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:53:32,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:53:32,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:53:32,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:53:32,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:53:32,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:53:32,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:53:32,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:53:32,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:53:32,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:53:32,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:53:32,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:53:32,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:53:32,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:53:32,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:53:32,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:53:32,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:53:32,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:53:32,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:53:32,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:53:32,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:53:32,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:53:32,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:53:32,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:53:32,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:53:32,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:53:32,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:53:32,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:53:32,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:53:32,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:53:32,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:53:32,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:53:32,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:53:32,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:53:32,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:53:32,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:53:32,354 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 00:53:32,401 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:53:32,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:53:32,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:53:32,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:53:32,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:53:32,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:53:32,405 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:53:32,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:53:32,406 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:53:32,406 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:53:32,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:53:32,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:53:32,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:53:32,407 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:53:32,408 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:53:32,408 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:53:32,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:53:32,409 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:53:32,409 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 00:53:32,409 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 00:53:32,409 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:53:32,410 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:53:32,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:53:32,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:53:32,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:53:32,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:53:32,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:53:32,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:53:32,412 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 00:53:32,412 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 00:53:32,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:53:32,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 00:53:32,413 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_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c4d407f41629f864eb5689f703f67280cbb5237 [2021-10-13 00:53:32,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:53:32,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:53:32,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:53:32,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:53:32,982 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:53:32,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i [2021-10-13 00:53:33,108 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/data/b7653c49f/54a6af3650124bb3b0b9986b63ccc0c9/FLAG280b885ff [2021-10-13 00:53:33,955 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:53:33,956 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i [2021-10-13 00:53:33,988 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/data/b7653c49f/54a6af3650124bb3b0b9986b63ccc0c9/FLAG280b885ff [2021-10-13 00:53:34,158 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/data/b7653c49f/54a6af3650124bb3b0b9986b63ccc0c9 [2021-10-13 00:53:34,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:53:34,169 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:53:34,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:53:34,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:53:34,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:53:34,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:53:34" (1/1) ... [2021-10-13 00:53:34,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ec6f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:34, skipping insertion in model container [2021-10-13 00:53:34,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:53:34" (1/1) ... [2021-10-13 00:53:34,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:53:34,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:53:35,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:53:35,178 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 00:53:35,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:53:35,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:53:35,287 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:53:35,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:53:35,433 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:53:35,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:35 WrapperNode [2021-10-13 00:53:35,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:53:35,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:53:35,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:53:35,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:53:35,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:35" (1/1) ... [2021-10-13 00:53:35,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:35" (1/1) ... [2021-10-13 00:53:35,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:35" (1/1) ... [2021-10-13 00:53:35,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:35" (1/1) ... [2021-10-13 00:53:35,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:35" (1/1) ... [2021-10-13 00:53:35,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:35" (1/1) ... [2021-10-13 00:53:35,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:35" (1/1) ... [2021-10-13 00:53:35,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:53:35,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:53:35,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:53:35,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:53:35,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:35" (1/1) ... [2021-10-13 00:53:35,586 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:53:35,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:53:35,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:53:35,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:53:35,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:53:35,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:53:35,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-10-13 00:53:35,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:53:35,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:53:35,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:53:35,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 00:53:35,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 00:53:35,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 00:53:35,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-10-13 00:53:35,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-10-13 00:53:35,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-10-13 00:53:35,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-10-13 00:53:35,728 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-10-13 00:53:35,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-10-13 00:53:35,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-10-13 00:53:35,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-10-13 00:53:35,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-10-13 00:53:35,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-10-13 00:53:35,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-10-13 00:53:35,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-10-13 00:53:35,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-10-13 00:53:35,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-10-13 00:53:35,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-10-13 00:53:35,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-10-13 00:53:35,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-10-13 00:53:35,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-10-13 00:53:35,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-10-13 00:53:35,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-10-13 00:53:35,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-10-13 00:53:35,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-10-13 00:53:35,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-10-13 00:53:35,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-10-13 00:53:35,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-10-13 00:53:35,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-10-13 00:53:35,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-10-13 00:53:35,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-10-13 00:53:35,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-10-13 00:53:35,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-10-13 00:53:35,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-10-13 00:53:35,738 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-13 00:53:35,738 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-13 00:53:35,738 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-10-13 00:53:35,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:53:35,739 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-13 00:53:35,739 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-10-13 00:53:35,740 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-10-13 00:53:35,741 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:53:35,741 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:53:35,742 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:53:35,742 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:53:35,743 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:53:35,743 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:53:35,743 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:53:35,743 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:53:35,744 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:53:35,744 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:53:35,744 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:53:35,745 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:53:35,745 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:53:35,746 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:53:35,746 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:53:35,748 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:53:35,749 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:53:35,750 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:53:35,750 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 00:53:35,750 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 00:53:35,751 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 00:53:35,751 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:53:35,751 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:53:35,751 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:53:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:53:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:53:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:53:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:53:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:53:35,753 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:53:35,753 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:53:35,753 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:53:35,754 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:53:35,755 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:53:35,755 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:53:35,755 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:53:35,755 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:53:35,756 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:53:35,756 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:53:35,756 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:53:35,756 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:53:35,756 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:53:35,757 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:53:35,757 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:53:35,757 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:53:35,757 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:53:35,758 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:53:35,758 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:53:35,758 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:53:35,758 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:53:35,758 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:53:35,759 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:53:35,759 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:53:35,760 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:53:35,760 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:53:35,760 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:53:35,760 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:53:35,760 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:53:35,761 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:53:35,761 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:53:35,761 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:53:35,761 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:53:35,762 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 00:53:35,762 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:53:35,762 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:53:35,762 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 00:53:35,762 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:53:35,763 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:53:35,763 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 00:53:35,763 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:53:35,763 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:53:35,764 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:53:35,764 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:53:35,765 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:53:35,765 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:53:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:53:35,767 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:53:35,771 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:53:35,772 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:53:35,772 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:53:35,773 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:53:35,774 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:53:35,776 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:53:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:53:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:53:35,779 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:53:35,786 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:53:35,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:53:35,786 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:53:35,786 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:53:35,787 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:53:35,787 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:53:35,787 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:53:35,787 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:53:35,787 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:53:35,788 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:53:35,788 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:53:35,788 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:53:35,788 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:53:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:53:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:53:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:53:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:53:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:53:35,790 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:53:35,790 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:53:35,790 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:53:35,790 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-10-13 00:53:35,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 00:53:35,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-10-13 00:53:35,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-10-13 00:53:35,791 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-13 00:53:35,791 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-13 00:53:35,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-10-13 00:53:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 00:53:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-10-13 00:53:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-10-13 00:53:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-10-13 00:53:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 00:53:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-10-13 00:53:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-10-13 00:53:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-10-13 00:53:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 00:53:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-10-13 00:53:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-10-13 00:53:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-10-13 00:53:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-10-13 00:53:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-10-13 00:53:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-10-13 00:53:35,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:53:35,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-10-13 00:53:35,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-10-13 00:53:35,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-10-13 00:53:35,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-10-13 00:53:35,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-10-13 00:53:35,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 00:53:35,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 00:53:35,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-10-13 00:53:35,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-10-13 00:53:35,797 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-10-13 00:53:35,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-10-13 00:53:35,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-10-13 00:53:35,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-10-13 00:53:35,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-10-13 00:53:35,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-10-13 00:53:35,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-10-13 00:53:35,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-10-13 00:53:35,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-10-13 00:53:35,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-10-13 00:53:35,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-10-13 00:53:35,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-10-13 00:53:35,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-13 00:53:35,800 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-13 00:53:35,800 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-13 00:53:35,800 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-10-13 00:53:35,800 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:53:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:53:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:53:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-13 00:53:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:53:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:53:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-13 00:53:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-13 00:53:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-10-13 00:53:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-10-13 00:53:36,743 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:53:37,262 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:53:37,635 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:53:37,635 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-13 00:53:37,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:53:37 BoogieIcfgContainer [2021-10-13 00:53:37,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:53:37,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:53:37,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:53:37,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:53:37,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:53:34" (1/3) ... [2021-10-13 00:53:37,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57889522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:53:37, skipping insertion in model container [2021-10-13 00:53:37,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:35" (2/3) ... [2021-10-13 00:53:37,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57889522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:53:37, skipping insertion in model container [2021-10-13 00:53:37,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:53:37" (3/3) ... [2021-10-13 00:53:37,651 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test22_2-1.i [2021-10-13 00:53:37,658 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:53:37,659 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-10-13 00:53:37,717 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:53:37,727 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:53:37,728 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-10-13 00:53:37,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 69 states have internal predecessors, (75), 12 states have call successors, (12), 11 states have call predecessors, (12), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-10-13 00:53:37,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:53:37,766 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:37,767 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:37,767 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_kobject_createErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:53:37,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:37,775 INFO L82 PathProgramCache]: Analyzing trace with hash -896940051, now seen corresponding path program 1 times [2021-10-13 00:53:37,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:53:37,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778454293] [2021-10-13 00:53:37,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:37,793 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:53:37,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:53:37,798 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:53:37,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 00:53:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:38,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:53:38,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:38,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 00:53:38,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:38,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:53:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:38,499 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:53:38,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778454293] [2021-10-13 00:53:38,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778454293] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:53:38,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:53:38,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 00:53:38,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886979479] [2021-10-13 00:53:38,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:53:38,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:53:38,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:53:38,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:53:38,532 INFO L87 Difference]: Start difference. First operand has 92 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 69 states have internal predecessors, (75), 12 states have call successors, (12), 11 states have call predecessors, (12), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:53:38,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:38,810 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-10-13 00:53:38,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:53:38,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-10-13 00:53:38,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:38,828 INFO L225 Difference]: With dead ends: 74 [2021-10-13 00:53:38,828 INFO L226 Difference]: Without dead ends: 71 [2021-10-13 00:53:38,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.9ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:53:38,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-13 00:53:38,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2021-10-13 00:53:38,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 46 states have internal predecessors, (50), 11 states have call successors, (11), 10 states have call predecessors, (11), 10 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2021-10-13 00:53:38,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2021-10-13 00:53:38,885 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 17 [2021-10-13 00:53:38,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:38,886 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2021-10-13 00:53:38,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:53:38,887 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2021-10-13 00:53:38,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:53:38,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:38,888 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:38,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:39,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:53:39,108 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_kobject_createErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:53:39,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:39,109 INFO L82 PathProgramCache]: Analyzing trace with hash -896940050, now seen corresponding path program 1 times [2021-10-13 00:53:39,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:53:39,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945157234] [2021-10-13 00:53:39,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:39,110 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:53:39,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:53:39,116 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:53:39,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 00:53:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:39,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:53:39,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:39,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 00:53:39,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:39,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:53:40,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:40,180 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:53:40,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945157234] [2021-10-13 00:53:40,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945157234] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:53:40,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:53:40,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-13 00:53:40,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922490001] [2021-10-13 00:53:40,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:53:40,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:53:40,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:53:40,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:53:40,186 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:53:40,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:40,851 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2021-10-13 00:53:40,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:53:40,853 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2021-10-13 00:53:40,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:40,855 INFO L225 Difference]: With dead ends: 70 [2021-10-13 00:53:40,856 INFO L226 Difference]: Without dead ends: 70 [2021-10-13 00:53:40,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 351.3ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:53:40,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-13 00:53:40,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2021-10-13 00:53:40,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 46 states have internal predecessors, (49), 11 states have call successors, (11), 10 states have call predecessors, (11), 10 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2021-10-13 00:53:40,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2021-10-13 00:53:40,868 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 17 [2021-10-13 00:53:40,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:40,873 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2021-10-13 00:53:40,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:53:40,874 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2021-10-13 00:53:40,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:53:40,877 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:40,877 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:40,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:41,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:53:41,093 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_kobject_createErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:53:41,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:41,093 INFO L82 PathProgramCache]: Analyzing trace with hash -868310900, now seen corresponding path program 1 times [2021-10-13 00:53:41,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:53:41,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034323711] [2021-10-13 00:53:41,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:41,095 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:53:41,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:53:41,100 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:53:41,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 00:53:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:41,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:53:41,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:41,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:41,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:53:41,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:41,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:53:41,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034323711] [2021-10-13 00:53:41,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034323711] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:53:41,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:53:41,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 00:53:41,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374747002] [2021-10-13 00:53:41,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:53:41,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:53:41,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:53:41,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:53:41,611 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:53:41,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:41,647 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2021-10-13 00:53:41,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:53:41,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-10-13 00:53:41,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:41,654 INFO L225 Difference]: With dead ends: 64 [2021-10-13 00:53:41,654 INFO L226 Difference]: Without dead ends: 64 [2021-10-13 00:53:41,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.8ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:53:41,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-13 00:53:41,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2021-10-13 00:53:41,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 43 states have internal predecessors, (46), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2021-10-13 00:53:41,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-10-13 00:53:41,686 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 17 [2021-10-13 00:53:41,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:41,686 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-10-13 00:53:41,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:53:41,688 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-10-13 00:53:41,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 00:53:41,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:41,690 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:41,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:41,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:53:41,906 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:53:41,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:41,907 INFO L82 PathProgramCache]: Analyzing trace with hash 2008128002, now seen corresponding path program 1 times [2021-10-13 00:53:41,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:53:41,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68236669] [2021-10-13 00:53:41,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:41,908 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:53:41,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:53:41,910 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:53:41,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 00:53:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:42,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:53:42,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:42,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:42,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:53:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:42,486 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:53:42,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68236669] [2021-10-13 00:53:42,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68236669] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:53:42,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:53:42,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 00:53:42,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857037180] [2021-10-13 00:53:42,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:53:42,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:53:42,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:53:42,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:53:42,497 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 00:53:42,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:42,532 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2021-10-13 00:53:42,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:53:42,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 22 [2021-10-13 00:53:42,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:42,538 INFO L225 Difference]: With dead ends: 64 [2021-10-13 00:53:42,538 INFO L226 Difference]: Without dead ends: 64 [2021-10-13 00:53:42,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:53:42,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-13 00:53:42,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2021-10-13 00:53:42,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 43 states have internal predecessors, (45), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2021-10-13 00:53:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2021-10-13 00:53:42,556 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 22 [2021-10-13 00:53:42,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:42,557 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2021-10-13 00:53:42,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 00:53:42,557 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2021-10-13 00:53:42,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 00:53:42,559 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:42,559 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:42,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:42,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:53:42,769 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:53:42,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:42,770 INFO L82 PathProgramCache]: Analyzing trace with hash 211176643, now seen corresponding path program 1 times [2021-10-13 00:53:42,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:53:42,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465511138] [2021-10-13 00:53:42,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:42,771 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:53:42,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:53:42,773 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:53:42,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 00:53:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:43,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:53:43,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:43,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:43,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:53:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:43,366 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:53:43,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465511138] [2021-10-13 00:53:43,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465511138] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:53:43,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:53:43,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 00:53:43,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280555454] [2021-10-13 00:53:43,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:53:43,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:53:43,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:53:43,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:53:43,369 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-13 00:53:43,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:43,504 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2021-10-13 00:53:43,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:53:43,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2021-10-13 00:53:43,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:43,507 INFO L225 Difference]: With dead ends: 68 [2021-10-13 00:53:43,507 INFO L226 Difference]: Without dead ends: 58 [2021-10-13 00:53:43,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:53:43,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-13 00:53:43,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-13 00:53:43,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 32 states have (on average 1.28125) internal successors, (41), 40 states have internal predecessors, (41), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-10-13 00:53:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-10-13 00:53:43,513 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 22 [2021-10-13 00:53:43,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:43,514 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-10-13 00:53:43,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-13 00:53:43,514 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-10-13 00:53:43,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 00:53:43,516 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:43,516 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:43,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:43,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:53:43,728 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_kref_initErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:53:43,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:43,729 INFO L82 PathProgramCache]: Analyzing trace with hash -45428445, now seen corresponding path program 1 times [2021-10-13 00:53:43,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:53:43,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198107996] [2021-10-13 00:53:43,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:43,730 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:53:43,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:53:43,731 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:53:43,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 00:53:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:44,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:53:44,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:44,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:44,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:53:44,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:44,342 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:53:44,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198107996] [2021-10-13 00:53:44,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198107996] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:53:44,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:53:44,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 00:53:44,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845639397] [2021-10-13 00:53:44,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:53:44,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:53:44,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:53:44,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:53:44,345 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 00:53:44,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:44,411 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2021-10-13 00:53:44,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:53:44,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2021-10-13 00:53:44,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:44,420 INFO L225 Difference]: With dead ends: 64 [2021-10-13 00:53:44,421 INFO L226 Difference]: Without dead ends: 60 [2021-10-13 00:53:44,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.4ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:53:44,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-13 00:53:44,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-13 00:53:44,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 42 states have internal predecessors, (43), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-10-13 00:53:44,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-10-13 00:53:44,427 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 32 [2021-10-13 00:53:44,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:44,427 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-10-13 00:53:44,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 00:53:44,428 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-10-13 00:53:44,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 00:53:44,429 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:44,430 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:44,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:44,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:53:44,645 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_kref_initErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:53:44,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:44,646 INFO L82 PathProgramCache]: Analyzing trace with hash -792080061, now seen corresponding path program 1 times [2021-10-13 00:53:44,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:53:44,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985222495] [2021-10-13 00:53:44,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:44,647 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:53:44,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:53:44,649 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:53:44,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 00:53:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:44,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:53:44,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:45,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:45,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:53:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:45,459 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:53:45,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985222495] [2021-10-13 00:53:45,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985222495] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:53:45,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:53:45,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-13 00:53:45,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452163568] [2021-10-13 00:53:45,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:53:45,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:53:45,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:53:45,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:53:45,463 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 00:53:45,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:45,757 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-10-13 00:53:45,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:53:45,759 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2021-10-13 00:53:45,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:45,760 INFO L225 Difference]: With dead ends: 68 [2021-10-13 00:53:45,760 INFO L226 Difference]: Without dead ends: 64 [2021-10-13 00:53:45,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 282.1ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:53:45,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-13 00:53:45,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-13 00:53:45,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 38 states have (on average 1.236842105263158) internal successors, (47), 46 states have internal predecessors, (47), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-10-13 00:53:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2021-10-13 00:53:45,768 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 34 [2021-10-13 00:53:45,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:45,768 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2021-10-13 00:53:45,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 00:53:45,769 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2021-10-13 00:53:45,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 00:53:45,771 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:45,771 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:45,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:45,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:53:45,977 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_kref_initErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:53:45,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:45,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1102366333, now seen corresponding path program 2 times [2021-10-13 00:53:45,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:53:45,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495101652] [2021-10-13 00:53:45,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:53:45,979 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:53:45,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:53:45,985 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:53:45,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 00:53:46,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 00:53:46,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:53:46,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:53:46,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:46,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 00:53:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-13 00:53:46,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:53:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-13 00:53:47,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:53:47,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495101652] [2021-10-13 00:53:47,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495101652] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:53:47,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:53:47,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 11 [2021-10-13 00:53:47,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300725248] [2021-10-13 00:53:47,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:53:47,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:53:47,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:53:47,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:53:47,016 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-13 00:53:47,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:47,755 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2021-10-13 00:53:47,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:53:47,756 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2021-10-13 00:53:47,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:47,758 INFO L225 Difference]: With dead ends: 63 [2021-10-13 00:53:47,758 INFO L226 Difference]: Without dead ends: 63 [2021-10-13 00:53:47,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 10 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 372.5ms TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:53:47,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-13 00:53:47,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-10-13 00:53:47,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 45 states have internal predecessors, (46), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-10-13 00:53:47,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2021-10-13 00:53:47,764 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 38 [2021-10-13 00:53:47,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:47,765 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2021-10-13 00:53:47,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-13 00:53:47,765 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2021-10-13 00:53:47,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 00:53:47,767 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:47,767 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:47,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:47,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:53:47,985 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_kref_initErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:53:47,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:47,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1102366332, now seen corresponding path program 1 times [2021-10-13 00:53:47,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:53:47,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317555555] [2021-10-13 00:53:47,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:47,987 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:53:47,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:53:47,989 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:53:47,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 00:53:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:48,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:53:48,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:48,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:53:49,221 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:49,221 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:53:49,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317555555] [2021-10-13 00:53:49,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317555555] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:53:49,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:53:49,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-13 00:53:49,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968075861] [2021-10-13 00:53:49,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 00:53:49,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:53:49,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 00:53:49,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:53:49,225 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 00:53:50,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:50,458 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2021-10-13 00:53:50,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 00:53:50,463 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2021-10-13 00:53:50,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:50,464 INFO L225 Difference]: With dead ends: 75 [2021-10-13 00:53:50,465 INFO L226 Difference]: Without dead ends: 71 [2021-10-13 00:53:50,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1254.0ms TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2021-10-13 00:53:50,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-13 00:53:50,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-10-13 00:53:50,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 46 states have (on average 1.173913043478261) internal successors, (54), 53 states have internal predecessors, (54), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-10-13 00:53:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2021-10-13 00:53:50,473 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 38 [2021-10-13 00:53:50,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:50,473 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2021-10-13 00:53:50,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 00:53:50,474 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2021-10-13 00:53:50,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-13 00:53:50,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:50,476 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:50,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:50,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:53:50,689 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_kref_initErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:53:50,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:50,690 INFO L82 PathProgramCache]: Analyzing trace with hash 2064886276, now seen corresponding path program 2 times [2021-10-13 00:53:50,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:53:50,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951024316] [2021-10-13 00:53:50,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:53:50,692 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:53:50,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:53:50,693 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:53:50,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 00:53:51,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 00:53:51,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:53:51,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 00:53:51,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:51,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 00:53:51,855 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-10-13 00:53:51,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:53:53,119 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-10-13 00:53:53,119 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:53:53,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951024316] [2021-10-13 00:53:53,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951024316] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:53:53,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:53:53,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2021-10-13 00:53:53,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630734481] [2021-10-13 00:53:53,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 00:53:53,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:53:53,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 00:53:53,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-13 00:53:53,121 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:53:54,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:54,480 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2021-10-13 00:53:54,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:53:54,481 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 46 [2021-10-13 00:53:54,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:54,482 INFO L225 Difference]: With dead ends: 70 [2021-10-13 00:53:54,482 INFO L226 Difference]: Without dead ends: 70 [2021-10-13 00:53:54,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1326.9ms TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-10-13 00:53:54,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-13 00:53:54,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-13 00:53:54,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 52 states have internal predecessors, (53), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-10-13 00:53:54,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2021-10-13 00:53:54,486 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 46 [2021-10-13 00:53:54,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:54,486 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2021-10-13 00:53:54,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:53:54,486 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2021-10-13 00:53:54,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 00:53:54,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:54,487 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:54,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:54,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:53:54,688 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:53:54,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:54,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1743926468, now seen corresponding path program 1 times [2021-10-13 00:53:54,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:53:54,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245387434] [2021-10-13 00:53:54,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:54,695 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:53:54,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:53:54,695 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:53:54,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 00:53:54,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:55,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 00:53:55,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:55,330 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:55,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:53:56,545 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:56,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:53:56,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245387434] [2021-10-13 00:53:56,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245387434] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:53:56,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:53:56,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-10-13 00:53:56,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997626366] [2021-10-13 00:53:56,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-13 00:53:56,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:53:56,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-13 00:53:56,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 00:53:56,549 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:53:57,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:57,101 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2021-10-13 00:53:57,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 00:53:57,103 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2021-10-13 00:53:57,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:57,104 INFO L225 Difference]: With dead ends: 76 [2021-10-13 00:53:57,104 INFO L226 Difference]: Without dead ends: 72 [2021-10-13 00:53:57,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 948.2ms TimeCoverageRelationStatistics Valid=250, Invalid=940, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 00:53:57,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-13 00:53:57,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-13 00:53:57,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 54 states have internal predecessors, (55), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-10-13 00:53:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2021-10-13 00:53:57,109 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 51 [2021-10-13 00:53:57,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:57,110 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2021-10-13 00:53:57,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:53:57,110 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2021-10-13 00:53:57,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 00:53:57,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:57,111 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:57,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:57,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:53:57,321 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:53:57,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:57,322 INFO L82 PathProgramCache]: Analyzing trace with hash 845780764, now seen corresponding path program 2 times [2021-10-13 00:53:57,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:53:57,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448094346] [2021-10-13 00:53:57,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:53:57,323 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:53:57,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:53:57,324 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:53:57,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 00:53:57,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 00:53:57,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:53:57,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:53:57,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:57,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 00:53:58,118 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-13 00:53:58,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:53:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-13 00:53:58,366 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:53:58,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448094346] [2021-10-13 00:53:58,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448094346] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:53:58,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:53:58,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 11 [2021-10-13 00:53:58,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522866721] [2021-10-13 00:53:58,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:53:58,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:53:58,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:53:58,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:53:58,368 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-10-13 00:53:58,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:58,806 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2021-10-13 00:53:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:53:58,807 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 53 [2021-10-13 00:53:58,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:58,808 INFO L225 Difference]: With dead ends: 70 [2021-10-13 00:53:58,808 INFO L226 Difference]: Without dead ends: 70 [2021-10-13 00:53:58,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 84 SyntacticMatches, 11 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 231.3ms TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:53:58,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-13 00:53:58,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-13 00:53:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 52 states have internal predecessors, (53), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-10-13 00:53:58,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2021-10-13 00:53:58,812 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 53 [2021-10-13 00:53:58,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:58,813 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2021-10-13 00:53:58,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-10-13 00:53:58,813 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2021-10-13 00:53:58,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 00:53:58,814 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:58,814 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:58,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:59,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:53:59,024 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:53:59,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:59,024 INFO L82 PathProgramCache]: Analyzing trace with hash 845780765, now seen corresponding path program 1 times [2021-10-13 00:53:59,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:53:59,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139655589] [2021-10-13 00:53:59,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:59,025 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:53:59,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:53:59,025 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:53:59,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 00:53:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:59,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 00:53:59,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:59,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 00:53:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-13 00:53:59,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:54:01,243 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-13 00:54:01,243 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:54:01,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139655589] [2021-10-13 00:54:01,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139655589] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:54:01,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:54:01,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2021-10-13 00:54:01,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958995208] [2021-10-13 00:54:01,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 00:54:01,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:54:01,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 00:54:01,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-13 00:54:01,245 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand has 23 states, 22 states have (on average 2.0) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-13 00:54:02,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:54:02,477 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2021-10-13 00:54:02,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:54:02,486 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) Word has length 53 [2021-10-13 00:54:02,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:54:02,487 INFO L225 Difference]: With dead ends: 68 [2021-10-13 00:54:02,487 INFO L226 Difference]: Without dead ends: 68 [2021-10-13 00:54:02,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1186.8ms TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-10-13 00:54:02,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-13 00:54:02,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-10-13 00:54:02,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.0625) internal successors, (51), 50 states have internal predecessors, (51), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-10-13 00:54:02,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2021-10-13 00:54:02,500 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 53 [2021-10-13 00:54:02,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:54:02,501 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2021-10-13 00:54:02,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-13 00:54:02,501 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2021-10-13 00:54:02,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 00:54:02,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:54:02,503 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:54:02,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:54:02,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:54:02,718 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:54:02,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:54:02,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1516815243, now seen corresponding path program 1 times [2021-10-13 00:54:02,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:54:02,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572708750] [2021-10-13 00:54:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:54:02,719 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:54:02,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:54:02,719 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:54:02,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 00:54:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:54:03,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:54:03,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:54:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-13 00:54:03,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:54:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-13 00:54:03,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:54:03,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572708750] [2021-10-13 00:54:03,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572708750] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:54:03,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:54:03,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-10-13 00:54:03,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220969712] [2021-10-13 00:54:03,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:54:03,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:54:03,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:54:03,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:54:03,565 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:54:03,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:54:03,609 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2021-10-13 00:54:03,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:54:03,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2021-10-13 00:54:03,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:54:03,610 INFO L225 Difference]: With dead ends: 70 [2021-10-13 00:54:03,611 INFO L226 Difference]: Without dead ends: 68 [2021-10-13 00:54:03,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.1ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:54:03,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-13 00:54:03,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-10-13 00:54:03,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 49 states have internal predecessors, (50), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-10-13 00:54:03,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2021-10-13 00:54:03,615 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 51 [2021-10-13 00:54:03,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:54:03,615 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2021-10-13 00:54:03,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:54:03,616 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2021-10-13 00:54:03,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-13 00:54:03,617 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:54:03,617 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:54:03,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-13 00:54:03,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:54:03,826 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:54:03,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:54:03,827 INFO L82 PathProgramCache]: Analyzing trace with hash 240473020, now seen corresponding path program 1 times [2021-10-13 00:54:03,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:54:03,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827541718] [2021-10-13 00:54:03,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:54:03,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:54:03,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:54:03,829 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:54:03,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 00:54:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:54:04,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:54:04,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:54:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-13 00:54:04,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:54:04,975 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-13 00:54:04,975 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:54:04,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827541718] [2021-10-13 00:54:04,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827541718] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:54:04,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:54:04,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 11 [2021-10-13 00:54:04,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912719128] [2021-10-13 00:54:04,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:54:04,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:54:04,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:54:04,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:54:04,978 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-13 00:54:05,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:54:05,071 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2021-10-13 00:54:05,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:54:05,071 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 56 [2021-10-13 00:54:05,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:54:05,072 INFO L225 Difference]: With dead ends: 72 [2021-10-13 00:54:05,072 INFO L226 Difference]: Without dead ends: 68 [2021-10-13 00:54:05,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 101.1ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:54:05,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-13 00:54:05,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-10-13 00:54:05,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 48 states have internal predecessors, (49), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-10-13 00:54:05,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2021-10-13 00:54:05,076 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 56 [2021-10-13 00:54:05,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:54:05,077 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2021-10-13 00:54:05,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-13 00:54:05,077 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2021-10-13 00:54:05,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 00:54:05,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:54:05,079 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:54:05,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:54:05,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:54:05,283 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:54:05,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:54:05,283 INFO L82 PathProgramCache]: Analyzing trace with hash 214334517, now seen corresponding path program 1 times [2021-10-13 00:54:05,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:54:05,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080836846] [2021-10-13 00:54:05,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:54:05,284 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:54:05,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:54:05,286 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:54:05,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 00:54:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:54:05,781 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:54:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:54:05,999 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-13 00:54:06,000 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:54:06,001 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:54:06,002 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-10-13 00:54:06,003 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-10-13 00:54:06,003 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-10-13 00:54:06,003 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-10-13 00:54:06,003 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-10-13 00:54:06,004 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-10-13 00:54:06,004 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-10-13 00:54:06,004 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-10-13 00:54:06,004 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-10-13 00:54:06,004 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-10-13 00:54:06,004 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-10-13 00:54:06,005 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-10-13 00:54:06,005 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-10-13 00:54:06,005 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-10-13 00:54:06,005 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-10-13 00:54:06,005 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-10-13 00:54:06,005 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-10-13 00:54:06,006 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-10-13 00:54:06,006 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-10-13 00:54:06,006 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-10-13 00:54:06,006 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-10-13 00:54:06,006 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-10-13 00:54:06,006 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-10-13 00:54:06,007 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-10-13 00:54:06,007 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-10-13 00:54:06,007 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-10-13 00:54:06,007 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-10-13 00:54:06,007 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-10-13 00:54:06,007 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-10-13 00:54:06,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-10-13 00:54:06,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-10-13 00:54:06,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-10-13 00:54:06,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-10-13 00:54:06,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-10-13 00:54:06,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-10-13 00:54:06,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-10-13 00:54:06,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-10-13 00:54:06,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-10-13 00:54:06,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-10-13 00:54:06,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-10-13 00:54:06,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-10-13 00:54:06,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-10-13 00:54:06,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:54:06,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:54:06,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:54:06,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:54:06,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:54:06,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:54:06,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-10-13 00:54:06,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-10-13 00:54:06,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-10-13 00:54:06,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-10-13 00:54:06,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-10-13 00:54:06,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-10-13 00:54:06,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-10-13 00:54:06,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-10-13 00:54:06,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:54:06,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:54:06,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:54:06,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:54:06,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:54:06,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:54:06,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-10-13 00:54:06,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-10-13 00:54:06,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-10-13 00:54:06,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-10-13 00:54:06,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-10-13 00:54:06,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-10-13 00:54:06,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-10-13 00:54:06,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-10-13 00:54:06,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 00:54:06,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:54:06,242 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:54:06,257 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-10-13 00:54:06,264 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-13 00:54:06,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:54:06 BoogieIcfgContainer [2021-10-13 00:54:06,284 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:54:06,284 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:54:06,284 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:54:06,285 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:54:06,285 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:53:37" (3/4) ... [2021-10-13 00:54:06,288 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:54:06,288 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:54:06,290 INFO L168 Benchmark]: Toolchain (without parser) took 32120.38 ms. Allocated memory was 77.6 MB in the beginning and 123.7 MB in the end (delta: 46.1 MB). Free memory was 42.0 MB in the beginning and 75.6 MB in the end (delta: -33.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2021-10-13 00:54:06,290 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 77.6 MB. Free memory was 60.0 MB in the beginning and 59.9 MB in the end (delta: 69.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:54:06,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1260.76 ms. Allocated memory is still 77.6 MB. Free memory was 41.8 MB in the beginning and 43.7 MB in the end (delta: -1.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:54:06,291 INFO L168 Benchmark]: Boogie Preprocessor took 131.72 ms. Allocated memory is still 77.6 MB. Free memory was 43.7 MB in the beginning and 39.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:54:06,292 INFO L168 Benchmark]: RCFGBuilder took 2069.57 ms. Allocated memory was 77.6 MB in the beginning and 102.8 MB in the end (delta: 25.2 MB). Free memory was 39.0 MB in the beginning and 70.6 MB in the end (delta: -31.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:54:06,292 INFO L168 Benchmark]: TraceAbstraction took 28641.67 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 70.1 MB in the beginning and 75.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:54:06,293 INFO L168 Benchmark]: Witness Printer took 4.34 ms. Allocated memory is still 123.7 MB. Free memory is still 75.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:54:06,295 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 77.6 MB. Free memory was 60.0 MB in the beginning and 59.9 MB in the end (delta: 69.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1260.76 ms. Allocated memory is still 77.6 MB. Free memory was 41.8 MB in the beginning and 43.7 MB in the end (delta: -1.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 131.72 ms. Allocated memory is still 77.6 MB. Free memory was 43.7 MB in the beginning and 39.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2069.57 ms. Allocated memory was 77.6 MB in the beginning and 102.8 MB in the end (delta: 25.2 MB). Free memory was 39.0 MB in the beginning and 70.6 MB in the end (delta: -31.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 28641.67 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 70.1 MB in the beginning and 75.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.34 ms. Allocated memory is still 123.7 MB. Free memory is still 75.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 761]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 761. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [\old(ldv_global_msg_list)=null, \old(ldv_global_msg_list)=null, ldv_global_msg_list={-2147483648:0}] [L762] CALL entry_point() VAL [ldv_global_msg_list={-2147483648:0}] [L758] struct ldv_kobject *kobj; VAL [ldv_global_msg_list={-2147483648:0}] [L759] CALL, EXPR ldv_kobject_create() VAL [ldv_global_msg_list={-2147483648:0}] [L740] struct ldv_kobject *kobj; VAL [ldv_global_msg_list={-2147483648:0}] [L741] CALL, EXPR ldv_malloc(sizeof(*kobj)) VAL [\old(size)=16, ldv_global_msg_list={-2147483648:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L741] RET, EXPR ldv_malloc(sizeof(*kobj)) VAL [ldv_global_msg_list={-2147483648:0}, ldv_malloc(sizeof(*kobj))={1:0}] [L741] kobj = ldv_malloc(sizeof(*kobj)) [L742] COND FALSE !(!kobj) VAL [kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L744] FCALL memset(kobj, 0, sizeof(*kobj)) VAL [kobj={1:0}, ldv_global_msg_list={-2147483648:0}, memset(kobj, 0, sizeof(*kobj))={1:0}] [L745] CALL ldv_kobject_init(kobj) VAL [kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L730] COND FALSE !(!kobj) VAL [kobj={1:0}, kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L733] CALL ldv_kobject_init_internal(kobj) VAL [kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L723] COND FALSE !(!kobj) VAL [kobj={1:0}, kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L725] CALL ldv_kref_init(&kobj->kref) VAL [kref={1:12}, ldv_global_msg_list={-2147483648:0}] [L682] ((&kref->refcount)->counter) = (1) VAL [kref={1:12}, kref={1:12}, ldv_global_msg_list={-2147483648:0}] [L725] RET ldv_kref_init(&kobj->kref) VAL [kobj={1:0}, kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L726] CALL LDV_INIT_LIST_HEAD(&kobj->entry) VAL [ldv_global_msg_list={-2147483648:0}, list={1:4}] [L540] list->next = list VAL [ldv_global_msg_list={-2147483648:0}, list={1:4}, list={1:4}] [L541] list->prev = list VAL [ldv_global_msg_list={-2147483648:0}, list={1:4}, list={1:4}] [L726] RET LDV_INIT_LIST_HEAD(&kobj->entry) VAL [kobj={1:0}, kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L733] RET ldv_kobject_init_internal(kobj) VAL [kobj={1:0}, kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L745] RET ldv_kobject_init(kobj) VAL [kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L746] return kobj; VAL [\result={1:0}, kobj={1:0}, ldv_global_msg_list={-2147483648:0}] [L759] RET, EXPR ldv_kobject_create() VAL [ldv_global_msg_list={-2147483648:0}, ldv_kobject_create()={1:0}] [L759] kobj = ldv_kobject_create() [L762] RET entry_point() VAL [ldv_global_msg_list={-2147483648:0}] - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 47 procedures, 330 locations, 71 error locations. Started 1 CEGAR loops. OverallTime: 28526.0ms, OverallIterations: 16, TraceHistogramMax: 16, EmptinessCheckTime: 38.3ms, AutomataDifference: 7338.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 21.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 760 SDtfs, 374 SDslu, 4036 SDs, 0 SdLazy, 2295 SolverSat, 162 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4727.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1109 GetRequests, 896 SyntacticMatches, 28 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 6240.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=0, InterpolantAutomatonStates: 144, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 153.6ms AutomataMinimizationTime, 15 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 276.3ms SsaConstructionTime, 923.7ms SatisfiabilityAnalysisTime, 11934.0ms InterpolantComputationTime, 614 NumberOfCodeBlocks, 578 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1064 ConstructedInterpolants, 80 QuantifiedInterpolants, 3835 SizeOfPredicates, 28 NumberOfNonLiveVariables, 2264 ConjunctsInSsa, 146 ConjunctsInUnsatCore, 30 InterpolantComputations, 24 PerfectInterpolantSequences, 1340/1598 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 00:54:06,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78f067f-6644-41a9-9eb3-76f4051c9c07/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...