./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.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_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/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_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/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_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/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 e59f2f76b5af05872fc34d1a817e9a82cf3c6006 ................................................................................................................................... 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_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/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_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/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_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/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 e59f2f76b5af05872fc34d1a817e9a82cf3c6006 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:37:30,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:37:30,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:37:30,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:37:30,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:37:30,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:37:30,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:37:30,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:37:30,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:37:30,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:37:30,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:37:30,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:37:30,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:37:30,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:37:30,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:37:30,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:37:30,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:37:30,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:37:30,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:37:30,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:37:30,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:37:30,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:37:30,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:37:30,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:37:30,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:37:30,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:37:30,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:37:30,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:37:30,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:37:30,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:37:30,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:37:30,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:37:30,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:37:30,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:37:30,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:37:30,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:37:30,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:37:30,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:37:30,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:37:30,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:37:30,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:37:30,338 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 00:37:30,383 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:37:30,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:37:30,384 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:37:30,384 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:37:30,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:37:30,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:37:30,386 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:37:30,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:37:30,386 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:37:30,386 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:37:30,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:37:30,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:37:30,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:37:30,387 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:37:30,387 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:37:30,387 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:37:30,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:37:30,388 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:37:30,388 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:37:30,388 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:37:30,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:37:30,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:37:30,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:37:30,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:37:30,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:37:30,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:37:30,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:37:30,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:37:30,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:37:30,390 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_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e59f2f76b5af05872fc34d1a817e9a82cf3c6006 [2021-10-13 00:37:30,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:37:30,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:37:30,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:37:30,679 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:37:30,681 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:37:30,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i [2021-10-13 00:37:30,742 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/data/3d159280d/d5ecc8ea9d51440490df7796ba44d1e6/FLAG1caa5e61c [2021-10-13 00:37:31,300 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:37:31,300 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i [2021-10-13 00:37:31,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/data/3d159280d/d5ecc8ea9d51440490df7796ba44d1e6/FLAG1caa5e61c [2021-10-13 00:37:31,574 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/data/3d159280d/d5ecc8ea9d51440490df7796ba44d1e6 [2021-10-13 00:37:31,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:37:31,578 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:37:31,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:37:31,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:37:31,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:37:31,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:37:31" (1/1) ... [2021-10-13 00:37:31,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de4b7a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:37:31, skipping insertion in model container [2021-10-13 00:37:31,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:37:31" (1/1) ... [2021-10-13 00:37:31,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:37:31,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:37:32,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:37:32,156 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 00:37:32,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d4d1754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:37:32, skipping insertion in model container [2021-10-13 00:37:32,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:37:32,158 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-13 00:37:32,161 INFO L168 Benchmark]: Toolchain (without parser) took 580.87 ms. Allocated memory is still 96.5 MB. Free memory was 65.0 MB in the beginning and 51.8 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:37:32,161 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 96.5 MB. Free memory is still 65.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:37:32,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 577.08 ms. Allocated memory is still 96.5 MB. Free memory was 64.8 MB in the beginning and 51.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:37:32,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 96.5 MB. Free memory is still 65.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 577.08 ms. Allocated memory is still 96.5 MB. Free memory was 64.8 MB in the beginning and 51.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 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 00:37:34,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:37:34,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:37:34,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:37:34,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:37:34,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:37:34,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:37:34,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:37:34,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:37:34,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:37:34,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:37:34,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:37:34,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:37:34,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:37:34,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:37:34,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:37:34,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:37:34,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:37:34,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:37:34,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:37:34,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:37:34,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:37:34,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:37:34,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:37:34,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:37:34,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:37:34,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:37:34,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:37:34,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:37:34,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:37:34,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:37:34,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:37:34,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:37:34,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:37:34,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:37:34,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:37:34,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:37:34,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:37:34,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:37:34,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:37:34,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:37:34,620 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 00:37:34,671 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:37:34,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:37:34,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:37:34,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:37:34,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:37:34,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:37:34,677 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:37:34,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:37:34,678 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:37:34,678 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:37:34,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:37:34,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:37:34,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:37:34,680 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:37:34,680 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:37:34,680 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:37:34,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:37:34,680 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:37:34,681 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 00:37:34,681 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 00:37:34,681 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:37:34,681 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:37:34,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:37:34,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:37:34,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:37:34,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:37:34,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:37:34,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:37:34,683 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 00:37:34,683 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 00:37:34,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:37:34,684 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 00:37:34,684 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_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e59f2f76b5af05872fc34d1a817e9a82cf3c6006 [2021-10-13 00:37:35,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:37:35,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:37:35,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:37:35,035 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:37:35,036 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:37:35,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i [2021-10-13 00:37:35,110 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/data/2347c1f12/e4db187743474c089cbd7d1737cc4e49/FLAG1c0062dc2 [2021-10-13 00:37:35,848 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:37:35,848 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i [2021-10-13 00:37:35,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/data/2347c1f12/e4db187743474c089cbd7d1737cc4e49/FLAG1c0062dc2 [2021-10-13 00:37:36,108 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/data/2347c1f12/e4db187743474c089cbd7d1737cc4e49 [2021-10-13 00:37:36,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:37:36,111 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:37:36,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:37:36,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:37:36,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:37:36,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:37:36" (1/1) ... [2021-10-13 00:37:36,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6180e121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:37:36, skipping insertion in model container [2021-10-13 00:37:36,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:37:36" (1/1) ... [2021-10-13 00:37:36,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:37:36,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:37:36,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:37:36,557 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 00:37:36,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:37:36,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:37:36,680 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:37:36,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:37:36,857 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:37:36,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:37:36 WrapperNode [2021-10-13 00:37:36,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:37:36,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:37:36,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:37:36,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:37:36,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:37:36" (1/1) ... [2021-10-13 00:37:36,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:37:36" (1/1) ... [2021-10-13 00:37:36,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:37:36" (1/1) ... [2021-10-13 00:37:36,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:37:36" (1/1) ... [2021-10-13 00:37:36,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:37:36" (1/1) ... [2021-10-13 00:37:36,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:37:36" (1/1) ... [2021-10-13 00:37:37,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:37:36" (1/1) ... [2021-10-13 00:37:37,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:37:37,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:37:37,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:37:37,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:37:37,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:37:36" (1/1) ... [2021-10-13 00:37:37,045 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:37:37,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:37:37,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:37:37,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:37:37,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:37:37,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:37:37,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-10-13 00:37:37,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:37:37,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:37:37,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:37:37,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 00:37:37,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 00:37:37,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 00:37:37,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-10-13 00:37:37,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-10-13 00:37:37,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-10-13 00:37:37,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-10-13 00:37:37,131 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-10-13 00:37:37,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-10-13 00:37:37,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-10-13 00:37:37,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-10-13 00:37:37,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-10-13 00:37:37,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-10-13 00:37:37,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-10-13 00:37:37,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-10-13 00:37:37,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-10-13 00:37:37,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-10-13 00:37:37,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-10-13 00:37:37,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-10-13 00:37:37,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-10-13 00:37:37,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-10-13 00:37:37,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-10-13 00:37:37,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-10-13 00:37:37,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-10-13 00:37:37,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-10-13 00:37:37,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-10-13 00:37:37,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-10-13 00:37:37,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-10-13 00:37:37,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-10-13 00:37:37,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-10-13 00:37:37,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-10-13 00:37:37,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-10-13 00:37:37,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-10-13 00:37:37,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-10-13 00:37:37,135 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-13 00:37:37,135 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-13 00:37:37,136 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_17 [2021-10-13 00:37:37,136 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-10-13 00:37:37,137 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:37:37,137 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-13 00:37:37,138 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-10-13 00:37:37,138 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-10-13 00:37:37,138 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:37:37,138 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:37:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:37:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:37:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:37:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:37:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:37:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:37:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:37:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:37:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:37:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:37:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:37:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:37:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:37:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:37:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:37:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:37:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 00:37:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 00:37:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 00:37:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:37:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:37:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:37:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:37:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:37:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:37:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:37:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:37:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:37:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:37:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:37:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:37:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:37:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:37:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:37:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:37:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:37:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:37:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:37:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:37:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:37:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:37:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:37:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:37:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:37:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:37:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:37:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:37:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:37:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:37:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:37:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:37:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:37:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:37:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:37:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:37:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:37:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:37:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:37:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:37:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:37:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 00:37:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:37:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:37:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 00:37:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:37:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:37:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 00:37:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:37:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:37:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:37:37,155 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:37:37,155 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:37:37,155 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:37:37,156 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:37:37,159 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:37:37,159 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:37:37,159 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:37:37,160 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:37:37,161 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:37:37,162 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:37:37,162 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:37:37,162 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:37:37,162 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:37:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:37:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:37:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:37:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:37:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:37:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:37:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:37:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:37:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:37:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:37:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:37:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:37:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:37:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:37:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:37:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:37:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:37:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:37:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:37:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:37:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:37:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:37:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-10-13 00:37:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 00:37:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-10-13 00:37:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-10-13 00:37:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-13 00:37:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-13 00:37:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-10-13 00:37:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 00:37:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-10-13 00:37:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-10-13 00:37:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-10-13 00:37:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 00:37:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-10-13 00:37:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-10-13 00:37:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-10-13 00:37:37,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 00:37:37,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-10-13 00:37:37,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-10-13 00:37:37,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-10-13 00:37:37,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-10-13 00:37:37,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-10-13 00:37:37,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-10-13 00:37:37,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:37:37,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-10-13 00:37:37,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-10-13 00:37:37,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-10-13 00:37:37,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-10-13 00:37:37,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-10-13 00:37:37,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 00:37:37,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 00:37:37,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-10-13 00:37:37,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-10-13 00:37:37,176 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-10-13 00:37:37,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-10-13 00:37:37,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-10-13 00:37:37,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-10-13 00:37:37,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-10-13 00:37:37,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-10-13 00:37:37,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-10-13 00:37:37,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-10-13 00:37:37,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-10-13 00:37:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-10-13 00:37:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-10-13 00:37:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-10-13 00:37:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-13 00:37:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-13 00:37:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-13 00:37:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_17 [2021-10-13 00:37:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-10-13 00:37:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:37:37,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:37:37,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:37:37,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-13 00:37:37,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:37:37,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:37:37,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-10-13 00:37:37,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-10-13 00:37:37,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-13 00:37:37,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-13 00:37:37,781 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:37:38,084 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:37:38,526 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:37:38,527 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 00:37:38,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:37:38 BoogieIcfgContainer [2021-10-13 00:37:38,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:37:38,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:37:38,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:37:38,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:37:38,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:37:36" (1/3) ... [2021-10-13 00:37:38,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2115bfa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:37:38, skipping insertion in model container [2021-10-13 00:37:38,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:37:36" (2/3) ... [2021-10-13 00:37:38,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2115bfa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:37:38, skipping insertion in model container [2021-10-13 00:37:38,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:37:38" (3/3) ... [2021-10-13 00:37:38,537 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test17_3.i [2021-10-13 00:37:38,542 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:37:38,543 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 85 error locations. [2021-10-13 00:37:38,586 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:37:38,593 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 00:37:38,593 INFO L340 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2021-10-13 00:37:38,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 75 states have (on average 1.6133333333333333) internal successors, (121), 107 states have internal predecessors, (121), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-10-13 00:37:38,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 00:37:38,617 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:38,618 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:37:38,618 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 81 more)] === [2021-10-13 00:37:38,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:38,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1287330039, now seen corresponding path program 1 times [2021-10-13 00:37:38,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:38,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483383871] [2021-10-13 00:37:38,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:38,637 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:38,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:38,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:38,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 00:37:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:38,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:37:38,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:38,966 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 00:37:39,023 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 00:37:39,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:39,128 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 00:37:39,129 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:39,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483383871] [2021-10-13 00:37:39,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483383871] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:39,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:39,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 00:37:39,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155227517] [2021-10-13 00:37:39,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:37:39,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:39,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:37:39,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:37:39,153 INFO L87 Difference]: Start difference. First operand has 132 states, 75 states have (on average 1.6133333333333333) internal successors, (121), 107 states have internal predecessors, (121), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) 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, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:37:39,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:39,377 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2021-10-13 00:37:39,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:37:39,378 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, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-10-13 00:37:39,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:39,387 INFO L225 Difference]: With dead ends: 72 [2021-10-13 00:37:39,387 INFO L226 Difference]: Without dead ends: 69 [2021-10-13 00:37:39,388 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:37:39,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-13 00:37:39,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2021-10-13 00:37:39,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 53 states have internal predecessors, (62), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-13 00:37:39,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2021-10-13 00:37:39,429 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 16 [2021-10-13 00:37:39,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:39,430 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2021-10-13 00:37:39,430 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, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:37:39,430 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2021-10-13 00:37:39,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 00:37:39,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:39,432 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:37:39,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:39,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:39,643 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 81 more)] === [2021-10-13 00:37:39,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:39,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1287330040, now seen corresponding path program 1 times [2021-10-13 00:37:39,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:39,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209028662] [2021-10-13 00:37:39,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:39,645 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:39,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:39,646 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:39,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 00:37:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:39,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:37:39,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:39,852 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 00:37:39,989 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 00:37:39,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:40,756 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 00:37:40,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:40,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209028662] [2021-10-13 00:37:40,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209028662] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:40,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:40,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 00:37:40,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426504386] [2021-10-13 00:37:40,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:37:40,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:40,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:37:40,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:37:40,760 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:37:41,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:41,728 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2021-10-13 00:37:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:37:41,729 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 16 [2021-10-13 00:37:41,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:41,731 INFO L225 Difference]: With dead ends: 78 [2021-10-13 00:37:41,731 INFO L226 Difference]: Without dead ends: 78 [2021-10-13 00:37:41,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 734.0ms TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:37:41,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-13 00:37:41,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 70. [2021-10-13 00:37:41,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 44 states have (on average 1.5454545454545454) internal successors, (68), 58 states have internal predecessors, (68), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-13 00:37:41,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2021-10-13 00:37:41,742 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 16 [2021-10-13 00:37:41,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:41,743 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2021-10-13 00:37:41,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:37:41,743 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2021-10-13 00:37:41,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 00:37:41,744 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:41,744 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:37:41,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 00:37:41,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:41,946 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 81 more)] === [2021-10-13 00:37:41,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:41,947 INFO L82 PathProgramCache]: Analyzing trace with hash -2120133576, now seen corresponding path program 1 times [2021-10-13 00:37:41,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:41,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817725308] [2021-10-13 00:37:41,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:41,948 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:41,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:41,949 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:41,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 00:37:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:42,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:37:42,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:42,217 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 00:37:42,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:42,316 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 00:37:42,316 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:42,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817725308] [2021-10-13 00:37:42,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817725308] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:42,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:42,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 00:37:42,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751447195] [2021-10-13 00:37:42,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:37:42,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:42,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:37:42,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:37:42,319 INFO L87 Difference]: Start difference. First operand 70 states and 81 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, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:37:42,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:42,359 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2021-10-13 00:37:42,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:37:42,360 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, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-10-13 00:37:42,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:42,362 INFO L225 Difference]: With dead ends: 69 [2021-10-13 00:37:42,362 INFO L226 Difference]: Without dead ends: 69 [2021-10-13 00:37:42,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.5ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:37:42,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-13 00:37:42,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2021-10-13 00:37:42,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 55 states have internal predecessors, (62), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-13 00:37:42,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2021-10-13 00:37:42,370 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 16 [2021-10-13 00:37:42,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:42,371 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2021-10-13 00:37:42,371 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, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:37:42,371 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2021-10-13 00:37:42,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:37:42,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:42,372 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 00:37:42,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:42,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:42,583 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 81 more)] === [2021-10-13 00:37:42,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:42,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1253321618, now seen corresponding path program 1 times [2021-10-13 00:37:42,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:42,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738435807] [2021-10-13 00:37:42,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:42,584 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:42,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:42,585 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:42,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 00:37:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:42,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:37:42,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:42,829 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 00:37:42,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:42,904 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 00:37:42,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:42,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738435807] [2021-10-13 00:37:42,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738435807] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:42,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:42,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 00:37:42,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308328023] [2021-10-13 00:37:42,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:37:42,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:42,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:37:42,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:37:42,906 INFO L87 Difference]: Start difference. First operand 67 states and 75 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, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:37:42,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:42,946 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2021-10-13 00:37:42,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:37:42,946 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, (4), 1 states have call predecessors, (4), 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 00:37:42,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:42,947 INFO L225 Difference]: With dead ends: 69 [2021-10-13 00:37:42,948 INFO L226 Difference]: Without dead ends: 69 [2021-10-13 00:37:42,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:37:42,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-13 00:37:42,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2021-10-13 00:37:42,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 55 states have internal predecessors, (61), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-13 00:37:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2021-10-13 00:37:42,955 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 17 [2021-10-13 00:37:42,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:42,956 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2021-10-13 00:37:42,956 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, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:37:42,956 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2021-10-13 00:37:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:37:42,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:42,957 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 00:37:42,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:43,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:43,168 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 81 more)] === [2021-10-13 00:37:43,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:43,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1298835343, now seen corresponding path program 1 times [2021-10-13 00:37:43,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:43,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837910829] [2021-10-13 00:37:43,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:43,169 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:43,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:43,170 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:43,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 00:37:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:43,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:37:43,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:43,410 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 00:37:43,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:43,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:43,515 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:43,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837910829] [2021-10-13 00:37:43,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837910829] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:43,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:43,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 00:37:43,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385353057] [2021-10-13 00:37:43,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:37:43,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:43,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:37:43,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:37:43,517 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 00:37:43,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:43,634 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2021-10-13 00:37:43,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:37:43,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2021-10-13 00:37:43,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:43,636 INFO L225 Difference]: With dead ends: 93 [2021-10-13 00:37:43,636 INFO L226 Difference]: Without dead ends: 88 [2021-10-13 00:37:43,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:37:43,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-13 00:37:43,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 65. [2021-10-13 00:37:43,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 40 states have (on average 1.475) internal successors, (59), 54 states have internal predecessors, (59), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-13 00:37:43,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2021-10-13 00:37:43,644 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 17 [2021-10-13 00:37:43,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:43,644 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2021-10-13 00:37:43,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 00:37:43,644 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2021-10-13 00:37:43,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 00:37:43,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:43,645 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:37:43,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:43,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:43,846 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 81 more)] === [2021-10-13 00:37:43,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:43,846 INFO L82 PathProgramCache]: Analyzing trace with hash -328857544, now seen corresponding path program 1 times [2021-10-13 00:37:43,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:43,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840727422] [2021-10-13 00:37:43,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:43,847 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:43,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:43,848 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:43,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 00:37:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:44,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:37:44,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:44,128 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 00:37:44,406 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:44,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:45,746 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:45,746 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:45,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840727422] [2021-10-13 00:37:45,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840727422] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:37:45,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:37:45,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 00:37:45,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820786959] [2021-10-13 00:37:45,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 00:37:45,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:45,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 00:37:45,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:37:45,749 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:37:47,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:47,462 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2021-10-13 00:37:47,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:37:47,462 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 22 [2021-10-13 00:37:47,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:47,464 INFO L225 Difference]: With dead ends: 82 [2021-10-13 00:37:47,464 INFO L226 Difference]: Without dead ends: 82 [2021-10-13 00:37:47,464 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1695.6ms TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2021-10-13 00:37:47,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-13 00:37:47,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2021-10-13 00:37:47,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 66 states have internal predecessors, (73), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-13 00:37:47,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2021-10-13 00:37:47,473 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 22 [2021-10-13 00:37:47,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:47,473 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2021-10-13 00:37:47,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:37:47,474 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2021-10-13 00:37:47,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 00:37:47,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:47,475 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 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 00:37:47,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:47,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:47,691 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 81 more)] === [2021-10-13 00:37:47,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:47,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1365837647, now seen corresponding path program 1 times [2021-10-13 00:37:47,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:47,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82526087] [2021-10-13 00:37:47,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:47,692 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:47,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:47,693 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:47,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 00:37:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:47,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:37:47,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:48,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:48,329 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:48,329 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:48,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82526087] [2021-10-13 00:37:48,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82526087] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:37:48,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:37:48,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-13 00:37:48,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435247706] [2021-10-13 00:37:48,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:37:48,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:48,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:37:48,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:37:48,332 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-13 00:37:48,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:48,585 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2021-10-13 00:37:48,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:37:48,586 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 32 [2021-10-13 00:37:48,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:48,587 INFO L225 Difference]: With dead ends: 83 [2021-10-13 00:37:48,587 INFO L226 Difference]: Without dead ends: 83 [2021-10-13 00:37:48,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 250.7ms TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:37:48,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-13 00:37:48,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2021-10-13 00:37:48,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 71 states have internal predecessors, (76), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-13 00:37:48,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2021-10-13 00:37:48,594 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 32 [2021-10-13 00:37:48,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:48,594 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2021-10-13 00:37:48,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-13 00:37:48,595 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2021-10-13 00:37:48,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 00:37:48,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:48,596 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:37:48,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-13 00:37:48,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:48,806 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 81 more)] === [2021-10-13 00:37:48,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:48,806 INFO L82 PathProgramCache]: Analyzing trace with hash 871274168, now seen corresponding path program 2 times [2021-10-13 00:37:48,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:48,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045406972] [2021-10-13 00:37:48,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:37:48,807 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:48,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:48,808 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:48,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 00:37:49,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:37:49,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:37:49,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:37:49,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:49,075 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 00:37:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:49,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:52,644 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:52,644 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:52,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045406972] [2021-10-13 00:37:52,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045406972] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:37:52,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:37:52,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-10-13 00:37:52,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609459369] [2021-10-13 00:37:52,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-13 00:37:52,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:52,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-13 00:37:52,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2021-10-13 00:37:52,647 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:37:57,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:57,915 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2021-10-13 00:37:57,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 00:37:57,916 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2021-10-13 00:37:57,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:57,918 INFO L225 Difference]: With dead ends: 103 [2021-10-13 00:37:57,918 INFO L226 Difference]: Without dead ends: 103 [2021-10-13 00:37:57,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 5584.7ms TimeCoverageRelationStatistics Valid=487, Invalid=1493, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 00:37:57,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-13 00:37:57,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2021-10-13 00:37:57,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 76 states have (on average 1.3157894736842106) internal successors, (100), 90 states have internal predecessors, (100), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-13 00:37:57,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2021-10-13 00:37:57,927 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 34 [2021-10-13 00:37:57,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:57,928 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2021-10-13 00:37:57,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:37:57,928 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2021-10-13 00:37:57,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 00:37:57,930 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:57,930 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 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 00:37:57,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:58,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:58,145 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 81 more)] === [2021-10-13 00:37:58,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:58,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1201348851, now seen corresponding path program 2 times [2021-10-13 00:37:58,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:58,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581838761] [2021-10-13 00:37:58,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:37:58,146 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:58,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:58,147 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:58,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 00:37:58,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 00:37:58,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:37:58,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:37:58,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-10-13 00:37:58,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:58,773 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-10-13 00:37:58,774 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:58,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581838761] [2021-10-13 00:37:58,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581838761] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:58,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:58,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-13 00:37:58,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220263372] [2021-10-13 00:37:58,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:37:58,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:58,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:37:58,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:37:58,776 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:37:58,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:58,871 INFO L93 Difference]: Finished difference Result 132 states and 147 transitions. [2021-10-13 00:37:58,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:37:58,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 47 [2021-10-13 00:37:58,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:58,874 INFO L225 Difference]: With dead ends: 132 [2021-10-13 00:37:58,874 INFO L226 Difference]: Without dead ends: 129 [2021-10-13 00:37:58,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:37:58,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-13 00:37:58,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 102. [2021-10-13 00:37:58,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 91 states have internal predecessors, (101), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-13 00:37:58,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2021-10-13 00:37:58,894 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 47 [2021-10-13 00:37:58,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:58,894 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2021-10-13 00:37:58,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:37:58,895 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2021-10-13 00:37:58,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 00:37:58,902 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:58,903 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:37:58,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:59,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:59,114 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting alloc_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 81 more)] === [2021-10-13 00:37:59,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:59,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1965849963, now seen corresponding path program 1 times [2021-10-13 00:37:59,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:59,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062194168] [2021-10-13 00:37:59,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:59,116 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:59,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:59,118 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:59,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 00:37:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:59,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:37:59,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 4 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:59,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:38:00,400 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 00:38:00,400 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:38:00,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062194168] [2021-10-13 00:38:00,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062194168] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:38:00,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:38:00,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-13 00:38:00,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374155855] [2021-10-13 00:38:00,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 00:38:00,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:38:00,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 00:38:00,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:38:00,403 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-13 00:38:00,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:38:00,897 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2021-10-13 00:38:00,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:38:00,898 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 50 [2021-10-13 00:38:00,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:38:00,900 INFO L225 Difference]: With dead ends: 102 [2021-10-13 00:38:00,900 INFO L226 Difference]: Without dead ends: 102 [2021-10-13 00:38:00,900 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 484.4ms TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2021-10-13 00:38:00,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-13 00:38:00,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-10-13 00:38:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 91 states have internal predecessors, (99), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-13 00:38:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2021-10-13 00:38:00,905 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 50 [2021-10-13 00:38:00,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:38:00,905 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2021-10-13 00:38:00,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-13 00:38:00,906 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2021-10-13 00:38:00,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-13 00:38:00,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:38:00,908 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:38:00,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:38:01,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:38:01,123 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alloc_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 81 more)] === [2021-10-13 00:38:01,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:38:01,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1148478293, now seen corresponding path program 2 times [2021-10-13 00:38:01,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:38:01,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838317488] [2021-10-13 00:38:01,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:38:01,124 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:38:01,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:38:01,125 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:38:01,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 00:38:01,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:38:01,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:38:01,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:38:01,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:38:01,523 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 00:38:01,788 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 00:38:01,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-10-13 00:38:01,839 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-10-13 00:38:01,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:38:02,229 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-10-13 00:38:02,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:38:02,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838317488] [2021-10-13 00:38:02,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838317488] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:38:02,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:38:02,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-10-13 00:38:02,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398936572] [2021-10-13 00:38:02,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:38:02,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:38:02,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:38:02,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:38:02,231 INFO L87 Difference]: Start difference. First operand 102 states and 111 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-13 00:38:02,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:38:02,865 INFO L93 Difference]: Finished difference Result 170 states and 190 transitions. [2021-10-13 00:38:02,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:38:02,870 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2021-10-13 00:38:02,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:38:02,872 INFO L225 Difference]: With dead ends: 170 [2021-10-13 00:38:02,872 INFO L226 Difference]: Without dead ends: 168 [2021-10-13 00:38:02,873 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 97 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 339.1ms TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:38:02,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-10-13 00:38:02,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 110. [2021-10-13 00:38:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.2674418604651163) internal successors, (109), 97 states have internal predecessors, (109), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-13 00:38:02,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2021-10-13 00:38:02,882 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 56 [2021-10-13 00:38:02,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:38:02,884 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2021-10-13 00:38:02,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-13 00:38:02,885 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2021-10-13 00:38:02,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-13 00:38:02,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:38:02,886 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:38:02,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:38:03,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:38:03,087 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting alloc_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 81 more)] === [2021-10-13 00:38:03,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:38:03,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1148478292, now seen corresponding path program 1 times [2021-10-13 00:38:03,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:38:03,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608283307] [2021-10-13 00:38:03,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:03,090 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:38:03,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:38:03,092 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:38:03,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 00:38:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:38:03,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 00:38:03,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:38:03,566 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 00:38:03,573 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 00:38:06,344 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 00:38:06,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2021-10-13 00:38:06,357 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 00:38:06,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-10-13 00:38:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-10-13 00:38:06,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:38:29,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-10-13 00:38:29,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2021-10-13 00:38:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-10-13 00:38:29,724 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:38:29,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608283307] [2021-10-13 00:38:29,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608283307] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:38:29,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:38:29,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-13 00:38:29,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552005873] [2021-10-13 00:38:29,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 00:38:29,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:38:29,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 00:38:29,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=402, Unknown=7, NotChecked=0, Total=462 [2021-10-13 00:38:29,727 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-13 00:40:22,120 WARN L207 SmtUtils]: Spent 6.43 s on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-10-13 00:40:45,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:40:45,907 INFO L93 Difference]: Finished difference Result 235 states and 269 transitions. [2021-10-13 00:40:45,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 00:40:45,908 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 56 [2021-10-13 00:40:45,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:40:45,910 INFO L225 Difference]: With dead ends: 235 [2021-10-13 00:40:45,910 INFO L226 Difference]: Without dead ends: 235 [2021-10-13 00:40:45,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 65126.5ms TimeCoverageRelationStatistics Valid=172, Invalid=999, Unknown=19, NotChecked=0, Total=1190 [2021-10-13 00:40:45,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-10-13 00:40:45,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 143. [2021-10-13 00:40:45,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 114 states have (on average 1.2894736842105263) internal successors, (147), 124 states have internal predecessors, (147), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (16), 12 states have call predecessors, (16), 9 states have call successors, (16) [2021-10-13 00:40:45,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 173 transitions. [2021-10-13 00:40:45,919 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 173 transitions. Word has length 56 [2021-10-13 00:40:45,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:40:45,919 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 173 transitions. [2021-10-13 00:40:45,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-13 00:40:45,920 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 173 transitions. [2021-10-13 00:40:45,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-13 00:40:45,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:40:45,921 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:40:45,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:40:46,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:40:46,122 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting alloc_17Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 81 more)] === [2021-10-13 00:40:46,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:40:46,122 INFO L82 PathProgramCache]: Analyzing trace with hash 118911672, now seen corresponding path program 1 times [2021-10-13 00:40:46,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:40:46,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625255089] [2021-10-13 00:40:46,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:40:46,123 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:40:46,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:40:46,124 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:40:46,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 00:40:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:40:46,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:40:46,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:40:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-13 00:40:46,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:40:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-13 00:40:46,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:40:46,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625255089] [2021-10-13 00:40:46,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625255089] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:40:46,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:40:46,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 00:40:46,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665406165] [2021-10-13 00:40:46,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:40:46,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:40:46,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:40:46,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:40:46,859 INFO L87 Difference]: Start difference. First operand 143 states and 173 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:40:46,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:40:46,934 INFO L93 Difference]: Finished difference Result 156 states and 187 transitions. [2021-10-13 00:40:46,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:40:46,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 58 [2021-10-13 00:40:46,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:40:46,936 INFO L225 Difference]: With dead ends: 156 [2021-10-13 00:40:46,936 INFO L226 Difference]: Without dead ends: 156 [2021-10-13 00:40:46,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:40:46,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-13 00:40:46,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 145. [2021-10-13 00:40:46,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 116 states have (on average 1.2672413793103448) internal successors, (147), 125 states have internal predecessors, (147), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (16), 13 states have call predecessors, (16), 9 states have call successors, (16) [2021-10-13 00:40:46,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 173 transitions. [2021-10-13 00:40:46,943 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 173 transitions. Word has length 58 [2021-10-13 00:40:46,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:40:46,944 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 173 transitions. [2021-10-13 00:40:46,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:40:46,944 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 173 transitions. [2021-10-13 00:40:46,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-13 00:40:46,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:40:46,945 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:40:46,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:40:47,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:40:47,158 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting alloc_17Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 81 more)] === [2021-10-13 00:40:47,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:40:47,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1861722007, now seen corresponding path program 1 times [2021-10-13 00:40:47,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:40:47,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764567721] [2021-10-13 00:40:47,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:40:47,159 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:40:47,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:40:47,160 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:40:47,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 00:40:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:40:47,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:40:47,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:40:47,760 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-10-13 00:40:47,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:40:47,890 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-10-13 00:40:47,890 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:40:47,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764567721] [2021-10-13 00:40:47,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764567721] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:40:47,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:40:47,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 00:40:47,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208422728] [2021-10-13 00:40:47,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:40:47,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:40:47,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:40:47,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:40:47,891 INFO L87 Difference]: Start difference. First operand 145 states and 173 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-13 00:40:47,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:40:47,972 INFO L93 Difference]: Finished difference Result 154 states and 182 transitions. [2021-10-13 00:40:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:40:47,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 58 [2021-10-13 00:40:47,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:40:47,974 INFO L225 Difference]: With dead ends: 154 [2021-10-13 00:40:47,974 INFO L226 Difference]: Without dead ends: 154 [2021-10-13 00:40:47,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 34.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:40:47,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-13 00:40:47,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 147. [2021-10-13 00:40:47,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 118 states have (on average 1.2627118644067796) internal successors, (149), 127 states have internal predecessors, (149), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (16), 13 states have call predecessors, (16), 9 states have call successors, (16) [2021-10-13 00:40:47,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 175 transitions. [2021-10-13 00:40:47,981 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 175 transitions. Word has length 58 [2021-10-13 00:40:47,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:40:47,981 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 175 transitions. [2021-10-13 00:40:47,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-13 00:40:47,982 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 175 transitions. [2021-10-13 00:40:47,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-13 00:40:47,983 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:40:47,983 INFO L512 BasicCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:40:47,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:40:48,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:40:48,195 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 81 more)] === [2021-10-13 00:40:48,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:40:48,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1895461816, now seen corresponding path program 3 times [2021-10-13 00:40:48,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:40:48,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359208345] [2021-10-13 00:40:48,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:40:48,196 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:40:48,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:40:48,210 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:40:48,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 00:40:48,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-10-13 00:40:48,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:40:48,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 00:40:48,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:40:49,008 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 00:40:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 41 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:40:50,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:41:02,497 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:41:02,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:41:02,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359208345] [2021-10-13 00:41:02,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359208345] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:41:02,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:41:02,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 43 [2021-10-13 00:41:02,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728419286] [2021-10-13 00:41:02,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-13 00:41:02,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:41:02,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-13 00:41:02,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=1404, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 00:41:02,501 INFO L87 Difference]: Start difference. First operand 147 states and 175 transitions. Second operand has 43 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 41 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:41:11,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:41:11,097 INFO L93 Difference]: Finished difference Result 133 states and 156 transitions. [2021-10-13 00:41:11,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 00:41:11,099 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 41 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2021-10-13 00:41:11,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:41:11,099 INFO L225 Difference]: With dead ends: 133 [2021-10-13 00:41:11,100 INFO L226 Difference]: Without dead ends: 133 [2021-10-13 00:41:11,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 12879.8ms TimeCoverageRelationStatistics Valid=444, Invalid=1536, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 00:41:11,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-13 00:41:11,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-10-13 00:41:11,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 105 states have (on average 1.2380952380952381) internal successors, (130), 113 states have internal predecessors, (130), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (16), 13 states have call predecessors, (16), 9 states have call successors, (16) [2021-10-13 00:41:11,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 156 transitions. [2021-10-13 00:41:11,107 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 156 transitions. Word has length 58 [2021-10-13 00:41:11,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:41:11,107 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 156 transitions. [2021-10-13 00:41:11,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 41 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:41:11,108 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 156 transitions. [2021-10-13 00:41:11,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-13 00:41:11,109 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:41:11,109 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:41:11,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:41:11,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:41:11,322 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 81 more)] === [2021-10-13 00:41:11,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:41:11,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1706796235, now seen corresponding path program 1 times [2021-10-13 00:41:11,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:41:11,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258600678] [2021-10-13 00:41:11,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:41:11,322 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:41:11,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:41:11,324 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:41:11,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 00:41:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:41:12,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:41:12,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:41:12,262 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-10-13 00:41:12,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:41:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-10-13 00:41:12,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:41:12,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258600678] [2021-10-13 00:41:12,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258600678] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:41:12,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:41:12,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-10-13 00:41:12,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036484237] [2021-10-13 00:41:12,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:41:12,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:41:12,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:41:12,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:41:12,634 INFO L87 Difference]: Start difference. First operand 133 states and 156 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-13 00:41:12,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:41:12,841 INFO L93 Difference]: Finished difference Result 178 states and 203 transitions. [2021-10-13 00:41:12,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:41:12,842 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 63 [2021-10-13 00:41:12,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:41:12,843 INFO L225 Difference]: With dead ends: 178 [2021-10-13 00:41:12,843 INFO L226 Difference]: Without dead ends: 172 [2021-10-13 00:41:12,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 105.9ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:41:12,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-13 00:41:12,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 133. [2021-10-13 00:41:12,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 113 states have internal predecessors, (128), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (16), 13 states have call predecessors, (16), 9 states have call successors, (16) [2021-10-13 00:41:12,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 154 transitions. [2021-10-13 00:41:12,850 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 154 transitions. Word has length 63 [2021-10-13 00:41:12,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:41:12,851 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 154 transitions. [2021-10-13 00:41:12,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-13 00:41:12,851 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 154 transitions. [2021-10-13 00:41:12,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-13 00:41:12,852 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:41:12,852 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:41:12,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 00:41:13,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:41:13,065 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 81 more)] === [2021-10-13 00:41:13,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:41:13,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1732693524, now seen corresponding path program 1 times [2021-10-13 00:41:13,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:41:13,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589440473] [2021-10-13 00:41:13,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:41:13,066 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:41:13,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:41:13,066 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:41:13,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 00:41:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:41:13,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:41:13,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:41:14,363 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-10-13 00:41:14,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:41:14,745 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-13 00:41:14,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:41:14,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589440473] [2021-10-13 00:41:14,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589440473] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:41:14,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:41:14,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2021-10-13 00:41:14,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667379710] [2021-10-13 00:41:14,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:41:14,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:41:14,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:41:14,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:41:14,747 INFO L87 Difference]: Start difference. First operand 133 states and 154 transitions. Second operand has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2021-10-13 00:41:15,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:41:15,024 INFO L93 Difference]: Finished difference Result 132 states and 152 transitions. [2021-10-13 00:41:15,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:41:15,025 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 63 [2021-10-13 00:41:15,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:41:15,026 INFO L225 Difference]: With dead ends: 132 [2021-10-13 00:41:15,026 INFO L226 Difference]: Without dead ends: 132 [2021-10-13 00:41:15,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 185.2ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:41:15,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-13 00:41:15,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-10-13 00:41:15,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 105 states have (on average 1.2) internal successors, (126), 112 states have internal predecessors, (126), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (16), 13 states have call predecessors, (16), 9 states have call successors, (16) [2021-10-13 00:41:15,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 152 transitions. [2021-10-13 00:41:15,031 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 152 transitions. Word has length 63 [2021-10-13 00:41:15,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:41:15,032 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 152 transitions. [2021-10-13 00:41:15,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2021-10-13 00:41:15,032 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 152 transitions. [2021-10-13 00:41:15,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-13 00:41:15,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:41:15,033 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:41:15,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 00:41:15,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:41:15,234 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting alloc_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 81 more)] === [2021-10-13 00:41:15,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:41:15,234 INFO L82 PathProgramCache]: Analyzing trace with hash 464441229, now seen corresponding path program 1 times [2021-10-13 00:41:15,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:41:15,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077437452] [2021-10-13 00:41:15,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:41:15,235 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:41:15,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:41:15,236 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:41:15,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 00:41:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:41:15,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:41:15,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:41:16,093 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-10-13 00:41:16,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:41:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-10-13 00:41:16,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:41:16,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077437452] [2021-10-13 00:41:16,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077437452] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:41:16,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:41:16,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 00:41:16,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011623646] [2021-10-13 00:41:16,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:41:16,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:41:16,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:41:16,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:41:16,280 INFO L87 Difference]: Start difference. First operand 132 states and 152 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 00:41:16,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:41:16,319 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2021-10-13 00:41:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:41:16,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 66 [2021-10-13 00:41:16,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:41:16,321 INFO L225 Difference]: With dead ends: 118 [2021-10-13 00:41:16,321 INFO L226 Difference]: Without dead ends: 118 [2021-10-13 00:41:16,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.0ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:41:16,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-13 00:41:16,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2021-10-13 00:41:16,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 91 states have (on average 1.1538461538461537) internal successors, (105), 98 states have internal predecessors, (105), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (12), 11 states have call predecessors, (12), 7 states have call successors, (12) [2021-10-13 00:41:16,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 125 transitions. [2021-10-13 00:41:16,326 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 125 transitions. Word has length 66 [2021-10-13 00:41:16,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:41:16,326 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 125 transitions. [2021-10-13 00:41:16,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 00:41:16,327 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 125 transitions. [2021-10-13 00:41:16,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 00:41:16,328 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:41:16,328 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:41:16,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 00:41:16,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:41:16,538 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting alloc_17Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 81 more)] === [2021-10-13 00:41:16,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:41:16,539 INFO L82 PathProgramCache]: Analyzing trace with hash -348622503, now seen corresponding path program 1 times [2021-10-13 00:41:16,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:41:16,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052408464] [2021-10-13 00:41:16,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:41:16,539 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:41:16,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:41:16,540 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:41:16,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 00:41:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:41:17,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:41:17,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:41:17,690 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-13 00:41:17,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:41:18,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-10-13 00:41:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-13 00:41:19,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:41:19,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052408464] [2021-10-13 00:41:19,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052408464] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:41:19,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:41:19,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-13 00:41:19,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136292412] [2021-10-13 00:41:19,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 00:41:19,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:41:19,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 00:41:19,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:41:19,561 INFO L87 Difference]: Start difference. First operand 116 states and 125 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 16 states have internal predecessors, (52), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-13 00:41:22,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:41:22,586 INFO L93 Difference]: Finished difference Result 146 states and 155 transitions. [2021-10-13 00:41:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 00:41:22,588 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 16 states have internal predecessors, (52), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) Word has length 68 [2021-10-13 00:41:22,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:41:22,589 INFO L225 Difference]: With dead ends: 146 [2021-10-13 00:41:22,589 INFO L226 Difference]: Without dead ends: 146 [2021-10-13 00:41:22,589 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2380.1ms TimeCoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2021-10-13 00:41:22,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-13 00:41:22,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 114. [2021-10-13 00:41:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 92 states have (on average 1.1195652173913044) internal successors, (103), 96 states have internal predecessors, (103), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (11), 11 states have call predecessors, (11), 7 states have call successors, (11) [2021-10-13 00:41:22,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2021-10-13 00:41:22,594 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 68 [2021-10-13 00:41:22,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:41:22,594 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2021-10-13 00:41:22,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 16 states have internal predecessors, (52), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-13 00:41:22,595 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2021-10-13 00:41:22,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 00:41:22,595 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:41:22,596 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:41:22,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 00:41:22,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:41:22,806 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 81 more)] === [2021-10-13 00:41:22,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:41:22,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1390109406, now seen corresponding path program 1 times [2021-10-13 00:41:22,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:41:22,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572688582] [2021-10-13 00:41:22,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:41:22,807 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:41:22,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:41:22,808 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:41:22,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 00:41:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:41:23,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 00:41:23,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:41:24,140 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-13 00:41:24,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:41:32,525 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_9| (Array (_ BitVec 32) (_ BitVec 1)))) (or (exists ((v_entry_point_~array~0.base_37 (_ BitVec 32))) (and (not (= |v_old(#valid)_BEFORE_CALL_9| (store |c_old(#valid)| v_entry_point_~array~0.base_37 (_ bv0 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_entry_point_~array~0.base_37)))))))) (= |v_old(#valid)_BEFORE_CALL_9| (store |c_#valid| c_entry_point_~array~0.base (_ bv0 1))))) is different from false [2021-10-13 00:41:32,823 INFO L354 Elim1Store]: treesize reduction 16, result has 78.1 percent of original size [2021-10-13 00:41:32,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 70 treesize of output 117 [2021-10-13 00:41:33,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-10-13 00:41:34,708 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 00:41:34,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 132 [2021-10-13 00:41:35,636 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:41:35,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572688582] [2021-10-13 00:41:35,637 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: No corresponding IProgramVar for v_prenex_3 [2021-10-13 00:41:35,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1744537724] [2021-10-13 00:41:35,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:41:35,638 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 00:41:35,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/cvc4 [2021-10-13 00:41:35,638 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 00:41:35,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-10-13 00:41:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:41:36,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:41:36,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:41:36,834 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-13 00:41:36,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 29 [2021-10-13 00:41:43,498 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-13 00:41:43,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:41:53,804 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_15| (Array (_ BitVec 32) (_ BitVec 1)))) (or (= |v_old(#valid)_BEFORE_CALL_15| (store |c_#valid| c_entry_point_~array~0.base (_ bv0 1))) (exists ((v_entry_point_~array~0.base_37 (_ BitVec 32))) (and (not (= |v_old(#valid)_BEFORE_CALL_15| (store |c_old(#valid)| v_entry_point_~array~0.base_37 (_ bv0 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_entry_point_~array~0.base_37)))))))))) is different from false [2021-10-13 00:41:54,119 INFO L354 Elim1Store]: treesize reduction 16, result has 78.1 percent of original size [2021-10-13 00:41:54,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 111 [2021-10-13 00:41:55,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-10-13 00:41:55,915 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 00:41:55,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 125 [2021-10-13 00:41:57,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: No corresponding IProgramVar for v_prenex_12 [2021-10-13 00:41:57,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993194255] [2021-10-13 00:41:57,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:41:57,098 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:41:57,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:41:57,099 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:41:57,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 00:41:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:41:58,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:41:58,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:41:58,482 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-13 00:41:58,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:42:02,696 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_21| (Array (_ BitVec 32) (_ BitVec 1)))) (or (exists ((v_entry_point_~array~0.base_37 (_ BitVec 32))) (and (not (= |v_old(#valid)_BEFORE_CALL_21| (store |c_old(#valid)| v_entry_point_~array~0.base_37 (_ bv0 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_entry_point_~array~0.base_37)))))))) (= |v_old(#valid)_BEFORE_CALL_21| |c_#valid|))) is different from false [2021-10-13 00:42:02,747 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_21| (Array (_ BitVec 32) (_ BitVec 1)))) (or (= |v_old(#valid)_BEFORE_CALL_21| (store |c_#valid| c_entry_point_~array~0.base (_ bv0 1))) (exists ((v_entry_point_~array~0.base_37 (_ BitVec 32))) (and (not (= |v_old(#valid)_BEFORE_CALL_21| (store |c_old(#valid)| v_entry_point_~array~0.base_37 (_ bv0 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_entry_point_~array~0.base_37)))))))))) is different from false [2021-10-13 00:42:03,128 INFO L354 Elim1Store]: treesize reduction 15, result has 79.5 percent of original size [2021-10-13 00:42:03,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 66 treesize of output 114 [2021-10-13 00:42:03,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-10-13 00:42:04,085 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 00:42:04,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 104 [2021-10-13 00:42:05,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: No corresponding IProgramVar for v_prenex_21 [2021-10-13 00:42:05,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:42:05,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-13 00:42:05,818 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-13 00:42:05,818 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-13 00:42:05,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:42:05,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-10-13 00:42:05,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-10-13 00:42:05,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-10-13 00:42:05,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-10-13 00:42:05,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-10-13 00:42:05,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-10-13 00:42:05,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-10-13 00:42:05,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-10-13 00:42:05,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-10-13 00:42:05,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-10-13 00:42:05,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-10-13 00:42:05,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-10-13 00:42:05,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-10-13 00:42:05,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-10-13 00:42:05,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-10-13 00:42:05,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-10-13 00:42:05,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-10-13 00:42:05,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-10-13 00:42:05,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-10-13 00:42:05,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-10-13 00:42:05,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-10-13 00:42:05,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-10-13 00:42:05,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-10-13 00:42:05,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-10-13 00:42:05,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-10-13 00:42:05,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-10-13 00:42:05,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-10-13 00:42:05,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-10-13 00:42:05,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-10-13 00:42:05,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-10-13 00:42:05,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-10-13 00:42:05,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-10-13 00:42:05,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-10-13 00:42:05,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-10-13 00:42:05,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-10-13 00:42:05,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-10-13 00:42:05,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-10-13 00:42:05,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-10-13 00:42:05,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err0REQUIRES_VIOLATION [2021-10-13 00:42:05,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err1REQUIRES_VIOLATION [2021-10-13 00:42:05,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err2REQUIRES_VIOLATION [2021-10-13 00:42:05,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err3REQUIRES_VIOLATION [2021-10-13 00:42:05,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:42:05,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:42:05,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:42:05,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err7REQUIRES_VIOLATION [2021-10-13 00:42:05,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err8REQUIRES_VIOLATION [2021-10-13 00:42:05,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-10-13 00:42:05,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-10-13 00:42:05,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-10-13 00:42:05,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-10-13 00:42:05,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:42:05,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:42:05,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:42:05,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:42:05,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:42:05,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:42:05,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-10-13 00:42:05,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-10-13 00:42:05,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-10-13 00:42:05,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-10-13 00:42:05,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-10-13 00:42:05,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-10-13 00:42:05,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-10-13 00:42:05,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-10-13 00:42:05,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:42:05,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:42:05,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:42:05,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:42:05,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:42:05,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:42:05,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-10-13 00:42:05,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-10-13 00:42:05,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-10-13 00:42:05,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-10-13 00:42:05,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-10-13 00:42:05,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-10-13 00:42:05,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-10-13 00:42:05,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-10-13 00:42:05,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION [2021-10-13 00:42:05,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION [2021-10-13 00:42:05,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:42:05,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:42:05,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:42:05,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:06,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:06,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:06,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:42:06,463 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:42:06,466 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-13 00:42:06,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:42:06 BoogieIcfgContainer [2021-10-13 00:42:06,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:42:06,477 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:42:06,477 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:42:06,478 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:42:06,478 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:37:38" (3/4) ... [2021-10-13 00:42:06,481 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:42:06,481 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:42:06,482 INFO L168 Benchmark]: Toolchain (without parser) took 270370.82 ms. Allocated memory was 54.5 MB in the beginning and 102.8 MB in the end (delta: 48.2 MB). Free memory was 31.3 MB in the beginning and 47.2 MB in the end (delta: -15.9 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:42:06,483 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 54.5 MB. Free memory is still 35.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:42:06,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 743.01 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 31.1 MB in the beginning and 50.9 MB in the end (delta: -19.8 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:42:06,484 INFO L168 Benchmark]: Boogie Preprocessor took 162.67 ms. Allocated memory is still 71.3 MB. Free memory was 50.9 MB in the beginning and 46.1 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:42:06,484 INFO L168 Benchmark]: RCFGBuilder took 1506.66 ms. Allocated memory is still 71.3 MB. Free memory was 46.1 MB in the beginning and 36.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:42:06,485 INFO L168 Benchmark]: TraceAbstraction took 267945.23 ms. Allocated memory was 71.3 MB in the beginning and 102.8 MB in the end (delta: 31.5 MB). Free memory was 35.5 MB in the beginning and 48.0 MB in the end (delta: -12.4 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. [2021-10-13 00:42:06,485 INFO L168 Benchmark]: Witness Printer took 3.85 ms. Allocated memory is still 102.8 MB. Free memory was 47.8 MB in the beginning and 47.2 MB in the end (delta: 614.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:42:06,492 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 54.5 MB. Free memory is still 35.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 743.01 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 31.1 MB in the beginning and 50.9 MB in the end (delta: -19.8 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 162.67 ms. Allocated memory is still 71.3 MB. Free memory was 50.9 MB in the beginning and 46.1 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1506.66 ms. Allocated memory is still 71.3 MB. Free memory was 46.1 MB in the beginning and 36.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 267945.23 ms. Allocated memory was 71.3 MB in the beginning and 102.8 MB in the end (delta: 31.5 MB). Free memory was 35.5 MB in the beginning and 48.0 MB in the end (delta: -12.4 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.85 ms. Allocated memory is still 102.8 MB. Free memory was 47.8 MB in the beginning and 47.2 MB in the end (delta: 614.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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: 789]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: unable to decide satisfiability of path constraint, overapproximation of memtrack at line 789. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L790] CALL entry_point() [L778] int i; [L779] int len = 10; [L780] CALL, EXPR ldv_malloc(sizeof(struct A17*)*len) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L780] RET, EXPR ldv_malloc(sizeof(struct A17*)*len) [L780] struct A17 **array = (struct A17 **)ldv_malloc(sizeof(struct A17*)*len); [L781] COND TRUE \read(**array) [L782] i=0 [L782] COND TRUE i=0) [L775] return - -3; [L785] RET alloc_17(array, len) [L786] free(array) [L786] free(array) [L786] free(array) [L790] RET entry_point() - 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: 767]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 767]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 773]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 773]: 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. - UnprovableResult [Line: 783]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 786]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 786]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 786]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 48 procedures, 372 locations, 85 error locations. Started 1 CEGAR loops. OverallTime: 267876.7ms, OverallIterations: 20, TraceHistogramMax: 15, EmptinessCheckTime: 37.6ms, AutomataDifference: 158424.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1077 SDtfs, 1745 SDslu, 6084 SDs, 0 SdLazy, 4049 SolverSat, 446 SolverUnsat, 47 SolverUnknown, 0 SolverNotchecked, 99338.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1689 GetRequests, 1388 SyntacticMatches, 10 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 89963.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=147occurred in iteration=14, InterpolantAutomatonStates: 206, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 161.5ms AutomataMinimizationTime, 19 MinimizatonAttempts, 315 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 222.8ms SsaConstructionTime, 1266.8ms SatisfiabilityAnalysisTime, 54278.3ms InterpolantComputationTime, 813 NumberOfCodeBlocks, 789 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1588 ConstructedInterpolants, 82 QuantifiedInterpolants, 11804 SizeOfPredicates, 37 NumberOfNonLiveVariables, 2940 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 38 InterpolantComputations, 18 PerfectInterpolantSequences, 2637/3566 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 00:42:06,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88c7df-9c69-4c16-bf66-0e8eead03ea8/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...