./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be --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 14e3e63e231fa0c862b0912d52fb4325a0198eb4d9a43387e9996f85700980cb ................................................................................................................................... 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_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be --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 14e3e63e231fa0c862b0912d52fb4325a0198eb4d9a43387e9996f85700980cb ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:35:18,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:35:18,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:35:18,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:35:18,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:35:18,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:35:18,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:35:18,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:35:18,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:35:18,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:35:18,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:35:18,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:35:18,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:35:18,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:35:18,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:35:18,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:35:18,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:35:18,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:35:18,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:35:18,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:35:18,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:35:18,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:35:18,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:35:18,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:35:18,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:35:18,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:35:18,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:35:18,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:35:18,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:35:18,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:35:18,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:35:18,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:35:18,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:35:18,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:35:18,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:35:18,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:35:18,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:35:18,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:35:18,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:35:18,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:35:18,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:35:18,422 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 19:35:18,462 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:35:18,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:35:18,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:35:18,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:35:18,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:35:18,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:35:18,465 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:35:18,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:35:18,466 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:35:18,466 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:35:18,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:35:18,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:35:18,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:35:18,468 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:35:18,468 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:35:18,468 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:35:18,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:35:18,469 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:35:18,469 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:35:18,469 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:35:18,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:35:18,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:35:18,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:35:18,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:35:18,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:35:18,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:35:18,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:35:18,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:35:18,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:35:18,473 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_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14e3e63e231fa0c862b0912d52fb4325a0198eb4d9a43387e9996f85700980cb [2021-10-21 19:35:18,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:35:18,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:35:18,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:35:18,787 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:35:18,789 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:35:18,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-2.i [2021-10-21 19:35:18,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/data/f07c723a9/410d2f27713342d3bff6bd862cc922df/FLAG4f317ea2c [2021-10-21 19:35:19,486 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:35:19,487 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-2.i [2021-10-21 19:35:19,502 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/data/f07c723a9/410d2f27713342d3bff6bd862cc922df/FLAG4f317ea2c [2021-10-21 19:35:19,716 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/data/f07c723a9/410d2f27713342d3bff6bd862cc922df [2021-10-21 19:35:19,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:35:19,720 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:35:19,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:35:19,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:35:19,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:35:19,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:35:19" (1/1) ... [2021-10-21 19:35:19,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3fdef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:19, skipping insertion in model container [2021-10-21 19:35:19,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:35:19" (1/1) ... [2021-10-21 19:35:19,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:35:19,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:35:20,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:35:20,185 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) [2021-10-21 19:35:20,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@40b9b979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:20, skipping insertion in model container [2021-10-21 19:35:20,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:35:20,187 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-21 19:35:20,190 INFO L168 Benchmark]: Toolchain (without parser) took 468.14 ms. Allocated memory is still 119.5 MB. Free memory was 77.3 MB in the beginning and 91.9 MB in the end (delta: -14.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:35:20,191 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 119.5 MB. Free memory is still 95.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:35:20,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.50 ms. Allocated memory is still 119.5 MB. Free memory was 77.1 MB in the beginning and 92.4 MB in the end (delta: -15.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:35:20,196 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 119.5 MB. Free memory is still 95.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 465.50 ms. Allocated memory is still 119.5 MB. Free memory was 77.1 MB in the beginning and 92.4 MB in the end (delta: -15.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 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-e943c26 [2021-10-21 19:35:22,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:35:22,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:35:22,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:35:22,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:35:22,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:35:22,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:35:22,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:35:22,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:35:22,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:35:22,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:35:22,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:35:22,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:35:22,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:35:22,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:35:22,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:35:22,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:35:22,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:35:22,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:35:22,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:35:22,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:35:22,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:35:22,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:35:22,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:35:22,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:35:22,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:35:22,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:35:22,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:35:22,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:35:22,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:35:22,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:35:22,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:35:22,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:35:22,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:35:22,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:35:22,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:35:22,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:35:22,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:35:22,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:35:22,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:35:22,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:35:22,526 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-21 19:35:22,570 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:35:22,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:35:22,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:35:22,572 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:35:22,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:35:22,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:35:22,575 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:35:22,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:35:22,575 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:35:22,575 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:35:22,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:35:22,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:35:22,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:35:22,577 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:35:22,577 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:35:22,578 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:35:22,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:35:22,578 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:35:22,578 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 19:35:22,579 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 19:35:22,579 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:35:22,579 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:35:22,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:35:22,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:35:22,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:35:22,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:35:22,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:35:22,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:35:22,581 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 19:35:22,581 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 19:35:22,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:35:22,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 19:35:22,582 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_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14e3e63e231fa0c862b0912d52fb4325a0198eb4d9a43387e9996f85700980cb [2021-10-21 19:35:22,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:35:22,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:35:22,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:35:22,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:35:22,985 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:35:22,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-2.i [2021-10-21 19:35:23,048 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/data/e3f9c2bb8/e2bb333fcf8d4d9e842cc90c71e5efbf/FLAG5da66f1b8 [2021-10-21 19:35:23,648 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:35:23,648 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-2.i [2021-10-21 19:35:23,667 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/data/e3f9c2bb8/e2bb333fcf8d4d9e842cc90c71e5efbf/FLAG5da66f1b8 [2021-10-21 19:35:23,935 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/data/e3f9c2bb8/e2bb333fcf8d4d9e842cc90c71e5efbf [2021-10-21 19:35:23,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:35:23,938 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:35:23,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:35:23,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:35:23,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:35:23,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:35:23" (1/1) ... [2021-10-21 19:35:23,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0ebe3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:23, skipping insertion in model container [2021-10-21 19:35:23,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:35:23" (1/1) ... [2021-10-21 19:35:23,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:35:24,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:35:24,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:35:24,486 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-21 19:35:24,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:35:24,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:35:24,604 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:35:24,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:35:24,721 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:35:24,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:24 WrapperNode [2021-10-21 19:35:24,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:35:24,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:35:24,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:35:24,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:35:24,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:24" (1/1) ... [2021-10-21 19:35:24,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:24" (1/1) ... [2021-10-21 19:35:24,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:24" (1/1) ... [2021-10-21 19:35:24,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:24" (1/1) ... [2021-10-21 19:35:24,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:24" (1/1) ... [2021-10-21 19:35:24,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:24" (1/1) ... [2021-10-21 19:35:24,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:24" (1/1) ... [2021-10-21 19:35:24,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:35:24,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:35:24,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:35:24,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:35:24,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:24" (1/1) ... [2021-10-21 19:35:24,891 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:35:24,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:24,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:24,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:35:24,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 19:35:24,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:35:24,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-10-21 19:35:24,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 19:35:24,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 19:35:24,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 19:35:24,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 19:35:24,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 19:35:24,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 19:35:24,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-10-21 19:35:24,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-10-21 19:35:24,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-10-21 19:35:24,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-10-21 19:35:24,974 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-10-21 19:35:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-10-21 19:35:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-10-21 19:35:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-10-21 19:35:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-10-21 19:35:24,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-10-21 19:35:24,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-10-21 19:35:24,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-10-21 19:35:24,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-10-21 19:35:24,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-10-21 19:35:24,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-10-21 19:35:24,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-10-21 19:35:24,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-10-21 19:35:24,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-10-21 19:35:24,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-10-21 19:35:24,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-10-21 19:35:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-10-21 19:35:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-10-21 19:35:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-10-21 19:35:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-10-21 19:35:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-10-21 19:35:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-10-21 19:35:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-10-21 19:35:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-10-21 19:35:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-10-21 19:35:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-10-21 19:35:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-10-21 19:35:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-21 19:35:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-21 19:35:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-10-21 19:35:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 19:35:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-21 19:35:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-10-21 19:35:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-10-21 19:35:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 19:35:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 19:35:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 19:35:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 19:35:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 19:35:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 19:35:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 19:35:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 19:35:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 19:35:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 19:35:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 19:35:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 19:35:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 19:35:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 19:35:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 19:35:24,987 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 19:35:24,987 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 19:35:24,988 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 19:35:24,988 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 19:35:24,988 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 19:35:24,988 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 19:35:24,988 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 19:35:24,989 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 19:35:24,989 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 19:35:24,989 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 19:35:24,989 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 19:35:24,989 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 19:35:24,990 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 19:35:24,990 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 19:35:24,990 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 19:35:24,990 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 19:35:24,990 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 19:35:24,991 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 19:35:24,991 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 19:35:24,992 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 19:35:24,992 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 19:35:24,992 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 19:35:24,992 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 19:35:24,992 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 19:35:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 19:35:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 19:35:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 19:35:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 19:35:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 19:35:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 19:35:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 19:35:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 19:35:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 19:35:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 19:35:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 19:35:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 19:35:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 19:35:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 19:35:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 19:35:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 19:35:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 19:35:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 19:35:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 19:35:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 19:35:24,997 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 19:35:24,997 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 19:35:24,997 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 19:35:24,997 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 19:35:24,997 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 19:35:24,997 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 19:35:24,998 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 19:35:24,998 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 19:35:24,998 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 19:35:24,998 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 19:35:24,999 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 19:35:24,999 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 19:35:24,999 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 19:35:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 19:35:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 19:35:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 19:35:25,001 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 19:35:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 19:35:25,005 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 19:35:25,005 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 19:35:25,005 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 19:35:25,005 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 19:35:25,006 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 19:35:25,006 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 19:35:25,007 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 19:35:25,007 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 19:35:25,007 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 19:35:25,007 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 19:35:25,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 19:35:25,008 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 19:35:25,008 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 19:35:25,008 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 19:35:25,008 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 19:35:25,008 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 19:35:25,008 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 19:35:25,009 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 19:35:25,009 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 19:35:25,009 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 19:35:25,009 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 19:35:25,009 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 19:35:25,009 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 19:35:25,010 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 19:35:25,010 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 19:35:25,010 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 19:35:25,010 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 19:35:25,010 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 19:35:25,010 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 19:35:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 19:35:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-10-21 19:35:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 19:35:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-10-21 19:35:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-10-21 19:35:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-21 19:35:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-21 19:35:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-10-21 19:35:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:35:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-10-21 19:35:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-10-21 19:35:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-10-21 19:35:25,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 19:35:25,013 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-10-21 19:35:25,013 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-10-21 19:35:25,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-10-21 19:35:25,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 19:35:25,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-10-21 19:35:25,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-10-21 19:35:25,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-10-21 19:35:25,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-10-21 19:35:25,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-10-21 19:35:25,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-10-21 19:35:25,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:35:25,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-10-21 19:35:25,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-10-21 19:35:25,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-10-21 19:35:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-10-21 19:35:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-10-21 19:35:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 19:35:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-21 19:35:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-10-21 19:35:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-10-21 19:35:25,017 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-10-21 19:35:25,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-10-21 19:35:25,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-10-21 19:35:25,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-10-21 19:35:25,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-10-21 19:35:25,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-10-21 19:35:25,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-10-21 19:35:25,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-10-21 19:35:25,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-10-21 19:35:25,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-10-21 19:35:25,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-10-21 19:35:25,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-10-21 19:35:25,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-21 19:35:25,019 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-21 19:35:25,019 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-21 19:35:25,019 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-10-21 19:35:25,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 19:35:25,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 19:35:25,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:35:25,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-21 19:35:25,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:35:25,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 19:35:25,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-21 19:35:25,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-21 19:35:25,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-10-21 19:35:25,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-10-21 19:35:25,663 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-21 19:35:25,993 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-21 19:35:26,248 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:35:26,248 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-21 19:35:26,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:35:26 BoogieIcfgContainer [2021-10-21 19:35:26,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:35:26,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:35:26,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:35:26,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:35:26,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:35:23" (1/3) ... [2021-10-21 19:35:26,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da23840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:35:26, skipping insertion in model container [2021-10-21 19:35:26,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:24" (2/3) ... [2021-10-21 19:35:26,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da23840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:35:26, skipping insertion in model container [2021-10-21 19:35:26,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:35:26" (3/3) ... [2021-10-21 19:35:26,258 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test22_3-2.i [2021-10-21 19:35:26,263 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:35:26,263 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-10-21 19:35:26,320 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:35:26,326 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:35:26,326 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-10-21 19:35:26,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 113 states have internal predecessors, (122), 20 states have call successors, (20), 18 states have call predecessors, (20), 18 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-10-21 19:35:26,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:35:26,350 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:35:26,351 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:35:26,351 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_kobject_createErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:35:26,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:26,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1484999723, now seen corresponding path program 1 times [2021-10-21 19:35:26,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:35:26,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8536934] [2021-10-21 19:35:26,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:26,369 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:35:26,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:35:26,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:35:26,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 19:35:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:26,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:35:26,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:26,687 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 [2021-10-21 19:35:26,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:26,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:35:26,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:26,876 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:35:26,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8536934] [2021-10-21 19:35:26,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8536934] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:26,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:26,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-21 19:35:26,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623197712] [2021-10-21 19:35:26,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:35:26,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:35:26,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:35:26,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:35:26,931 INFO L87 Difference]: Start difference. First operand has 151 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 113 states have internal predecessors, (122), 20 states have call successors, (20), 18 states have call predecessors, (20), 18 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-21 19:35:27,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:27,172 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2021-10-21 19:35:27,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:35:27,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-10-21 19:35:27,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:35:27,185 INFO L225 Difference]: With dead ends: 133 [2021-10-21 19:35:27,185 INFO L226 Difference]: Without dead ends: 130 [2021-10-21 19:35:27,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:35:27,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-21 19:35:27,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 124. [2021-10-21 19:35:27,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 69 states have (on average 1.4057971014492754) internal successors, (97), 90 states have internal predecessors, (97), 19 states have call successors, (19), 17 states have call predecessors, (19), 17 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2021-10-21 19:35:27,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 135 transitions. [2021-10-21 19:35:27,233 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 135 transitions. Word has length 17 [2021-10-21 19:35:27,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:35:27,233 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 135 transitions. [2021-10-21 19:35:27,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-21 19:35:27,234 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 135 transitions. [2021-10-21 19:35:27,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:35:27,235 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:35:27,235 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:35:27,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:27,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:35:27,447 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_kobject_createErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:35:27,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:27,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1484999724, now seen corresponding path program 1 times [2021-10-21 19:35:27,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:35:27,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827874715] [2021-10-21 19:35:27,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:27,448 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:35:27,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:35:27,449 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:35:27,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 19:35:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:27,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:35:27,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:27,710 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 [2021-10-21 19:35:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:27,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:35:28,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:28,282 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:35:28,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827874715] [2021-10-21 19:35:28,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827874715] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:28,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:28,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-21 19:35:28,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128648401] [2021-10-21 19:35:28,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:35:28,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:35:28,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:35:28,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:35:28,286 INFO L87 Difference]: Start difference. First operand 124 states and 135 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-21 19:35:28,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:28,790 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2021-10-21 19:35:28,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:35:28,794 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2021-10-21 19:35:28,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:35:28,796 INFO L225 Difference]: With dead ends: 129 [2021-10-21 19:35:28,796 INFO L226 Difference]: Without dead ends: 129 [2021-10-21 19:35:28,797 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 251.9ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:35:28,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-21 19:35:28,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 124. [2021-10-21 19:35:28,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 68 states have (on average 1.411764705882353) internal successors, (96), 90 states have internal predecessors, (96), 19 states have call successors, (19), 17 states have call predecessors, (19), 17 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2021-10-21 19:35:28,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2021-10-21 19:35:28,809 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 17 [2021-10-21 19:35:28,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:35:28,810 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2021-10-21 19:35:28,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-21 19:35:28,810 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2021-10-21 19:35:28,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:35:28,811 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:35:28,811 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:35:28,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:29,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:35:29,026 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_kobject_createErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:35:29,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:29,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1513628874, now seen corresponding path program 1 times [2021-10-21 19:35:29,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:35:29,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303257525] [2021-10-21 19:35:29,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:29,027 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:35:29,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:35:29,028 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:35:29,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 19:35:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:29,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:35:29,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:29,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:29,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:35:29,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:29,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:35:29,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303257525] [2021-10-21 19:35:29,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303257525] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:29,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:29,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 19:35:29,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982424988] [2021-10-21 19:35:29,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:35:29,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:35:29,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:35:29,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:35:29,395 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-21 19:35:29,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:29,429 INFO L93 Difference]: Finished difference Result 123 states and 131 transitions. [2021-10-21 19:35:29,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:35:29,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-10-21 19:35:29,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:35:29,438 INFO L225 Difference]: With dead ends: 123 [2021-10-21 19:35:29,438 INFO L226 Difference]: Without dead ends: 123 [2021-10-21 19:35:29,439 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.0ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:35:29,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-21 19:35:29,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2021-10-21 19:35:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 87 states have internal predecessors, (93), 18 states have call successors, (18), 17 states have call predecessors, (18), 17 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2021-10-21 19:35:29,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 129 transitions. [2021-10-21 19:35:29,467 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 129 transitions. Word has length 17 [2021-10-21 19:35:29,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:35:29,467 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 129 transitions. [2021-10-21 19:35:29,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-21 19:35:29,468 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 129 transitions. [2021-10-21 19:35:29,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 19:35:29,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:35:29,470 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:35:29,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:29,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:35:29,681 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:35:29,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:29,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1578542280, now seen corresponding path program 1 times [2021-10-21 19:35:29,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:35:29,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750523366] [2021-10-21 19:35:29,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:29,683 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:35:29,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:35:29,684 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:35:29,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 19:35:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:29,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:35:29,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:29,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:29,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:35:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:30,100 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:35:30,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750523366] [2021-10-21 19:35:30,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750523366] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:30,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:30,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 19:35:30,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959873491] [2021-10-21 19:35:30,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:35:30,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:35:30,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:35:30,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:35:30,103 INFO L87 Difference]: Start difference. First operand 121 states and 129 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-21 19:35:30,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:30,137 INFO L93 Difference]: Finished difference Result 123 states and 130 transitions. [2021-10-21 19:35:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:35:30,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2021-10-21 19:35:30,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:35:30,140 INFO L225 Difference]: With dead ends: 123 [2021-10-21 19:35:30,141 INFO L226 Difference]: Without dead ends: 123 [2021-10-21 19:35:30,141 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:35:30,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-21 19:35:30,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2021-10-21 19:35:30,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 67 states have (on average 1.373134328358209) internal successors, (92), 87 states have internal predecessors, (92), 18 states have call successors, (18), 17 states have call predecessors, (18), 17 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2021-10-21 19:35:30,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 128 transitions. [2021-10-21 19:35:30,151 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 128 transitions. Word has length 29 [2021-10-21 19:35:30,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:35:30,152 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 128 transitions. [2021-10-21 19:35:30,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-21 19:35:30,152 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 128 transitions. [2021-10-21 19:35:30,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 19:35:30,153 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:35:30,154 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:35:30,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:30,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:35:30,365 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:35:30,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:30,366 INFO L82 PathProgramCache]: Analyzing trace with hash 581469927, now seen corresponding path program 1 times [2021-10-21 19:35:30,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:35:30,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586015971] [2021-10-21 19:35:30,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:30,367 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:35:30,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:35:30,368 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:35:30,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 19:35:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:30,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:35:30,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:30,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:35:30,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:30,876 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:35:30,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586015971] [2021-10-21 19:35:30,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586015971] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:30,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:30,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-21 19:35:30,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154357334] [2021-10-21 19:35:30,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:35:30,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:35:30,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:35:30,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:35:30,879 INFO L87 Difference]: Start difference. First operand 121 states and 128 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-21 19:35:30,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:30,946 INFO L93 Difference]: Finished difference Result 134 states and 143 transitions. [2021-10-21 19:35:30,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:35:30,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2021-10-21 19:35:30,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:35:30,948 INFO L225 Difference]: With dead ends: 134 [2021-10-21 19:35:30,948 INFO L226 Difference]: Without dead ends: 134 [2021-10-21 19:35:30,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.7ms TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:35:30,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-21 19:35:30,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2021-10-21 19:35:30,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 72 states have (on average 1.3472222222222223) internal successors, (97), 93 states have internal predecessors, (97), 20 states have call successors, (20), 18 states have call predecessors, (20), 19 states have return successors, (21), 20 states have call predecessors, (21), 19 states have call successors, (21) [2021-10-21 19:35:30,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2021-10-21 19:35:30,971 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 29 [2021-10-21 19:35:30,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:35:30,971 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2021-10-21 19:35:30,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-21 19:35:30,971 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2021-10-21 19:35:30,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 19:35:30,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:35:30,975 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:35:30,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:31,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:35:31,176 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_kref_initErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:35:31,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:31,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1899216601, now seen corresponding path program 1 times [2021-10-21 19:35:31,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:35:31,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475349185] [2021-10-21 19:35:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:31,177 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:35:31,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:35:31,182 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:35:31,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 19:35:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:31,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:35:31,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:31,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:31,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:35:31,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:31,628 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:35:31,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475349185] [2021-10-21 19:35:31,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475349185] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:31,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:31,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-21 19:35:31,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758101720] [2021-10-21 19:35:31,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:35:31,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:35:31,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:35:31,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:35:31,632 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-21 19:35:31,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:31,678 INFO L93 Difference]: Finished difference Result 136 states and 144 transitions. [2021-10-21 19:35:31,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:35:31,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2021-10-21 19:35:31,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:35:31,680 INFO L225 Difference]: With dead ends: 136 [2021-10-21 19:35:31,680 INFO L226 Difference]: Without dead ends: 132 [2021-10-21 19:35:31,681 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.8ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:35:31,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-21 19:35:31,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-10-21 19:35:31,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 74 states have (on average 1.337837837837838) internal successors, (99), 95 states have internal predecessors, (99), 20 states have call successors, (20), 18 states have call predecessors, (20), 19 states have return successors, (21), 20 states have call predecessors, (21), 19 states have call successors, (21) [2021-10-21 19:35:31,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 140 transitions. [2021-10-21 19:35:31,689 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 140 transitions. Word has length 32 [2021-10-21 19:35:31,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:35:31,689 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 140 transitions. [2021-10-21 19:35:31,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-21 19:35:31,690 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 140 transitions. [2021-10-21 19:35:31,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-21 19:35:31,691 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:35:31,691 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:35:31,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:31,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:35:31,903 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_kref_initErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:35:31,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:31,903 INFO L82 PathProgramCache]: Analyzing trace with hash -2034413241, now seen corresponding path program 1 times [2021-10-21 19:35:31,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:35:31,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787125404] [2021-10-21 19:35:31,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:31,904 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:35:31,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:35:31,905 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:35:31,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-21 19:35:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:32,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:35:32,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:32,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:32,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:35:32,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:32,502 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:35:32,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787125404] [2021-10-21 19:35:32,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787125404] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 19:35:32,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:32,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-21 19:35:32,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990924846] [2021-10-21 19:35:32,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:35:32,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:35:32,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:35:32,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:35:32,505 INFO L87 Difference]: Start difference. First operand 132 states and 140 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-21 19:35:32,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:32,674 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2021-10-21 19:35:32,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:35:32,675 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2021-10-21 19:35:32,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:35:32,677 INFO L225 Difference]: With dead ends: 140 [2021-10-21 19:35:32,677 INFO L226 Difference]: Without dead ends: 136 [2021-10-21 19:35:32,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 161.0ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:35:32,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-21 19:35:32,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-10-21 19:35:32,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 78 states have (on average 1.3205128205128205) internal successors, (103), 99 states have internal predecessors, (103), 20 states have call successors, (20), 18 states have call predecessors, (20), 19 states have return successors, (21), 20 states have call predecessors, (21), 19 states have call successors, (21) [2021-10-21 19:35:32,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 144 transitions. [2021-10-21 19:35:32,685 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 144 transitions. Word has length 34 [2021-10-21 19:35:32,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:35:32,685 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 144 transitions. [2021-10-21 19:35:32,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-21 19:35:32,686 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 144 transitions. [2021-10-21 19:35:32,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 19:35:32,687 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:35:32,687 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-21 19:35:32,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:32,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:35:32,899 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:35:32,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:32,900 INFO L82 PathProgramCache]: Analyzing trace with hash 76391075, now seen corresponding path program 1 times [2021-10-21 19:35:32,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:35:32,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7193514] [2021-10-21 19:35:32,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:32,900 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:35:32,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:35:32,901 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:35:32,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-21 19:35:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:33,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:35:33,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:35:33,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:35:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:35:33,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:35:33,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7193514] [2021-10-21 19:35:33,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7193514] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:33,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:33,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 19:35:33,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196122614] [2021-10-21 19:35:33,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:35:33,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:35:33,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:35:33,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:35:33,430 INFO L87 Difference]: Start difference. First operand 136 states and 144 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-21 19:35:33,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:33,578 INFO L93 Difference]: Finished difference Result 147 states and 155 transitions. [2021-10-21 19:35:33,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:35:33,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 32 [2021-10-21 19:35:33,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:35:33,580 INFO L225 Difference]: With dead ends: 147 [2021-10-21 19:35:33,580 INFO L226 Difference]: Without dead ends: 131 [2021-10-21 19:35:33,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:35:33,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-21 19:35:33,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 123. [2021-10-21 19:35:33,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 90 states have internal predecessors, (94), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-10-21 19:35:33,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 129 transitions. [2021-10-21 19:35:33,586 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 129 transitions. Word has length 32 [2021-10-21 19:35:33,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:35:33,586 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 129 transitions. [2021-10-21 19:35:33,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-21 19:35:33,586 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 129 transitions. [2021-10-21 19:35:33,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-21 19:35:33,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:35:33,588 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:35:33,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:33,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:35:33,800 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_kref_initErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:35:33,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:33,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1051272825, now seen corresponding path program 2 times [2021-10-21 19:35:33,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:35:33,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243493251] [2021-10-21 19:35:33,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:35:33,801 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:35:33,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:35:33,802 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:35:33,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-21 19:35:34,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 19:35:34,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:35:34,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:35:34,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:34,051 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 [2021-10-21 19:35:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-21 19:35:34,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:35:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-21 19:35:34,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:35:34,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243493251] [2021-10-21 19:35:34,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243493251] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:34,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:34,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 11 [2021-10-21 19:35:34,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860997196] [2021-10-21 19:35:34,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:35:34,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:35:34,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:35:34,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:35:34,547 INFO L87 Difference]: Start difference. First operand 123 states and 129 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 19:35:35,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:35,273 INFO L93 Difference]: Finished difference Result 146 states and 160 transitions. [2021-10-21 19:35:35,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:35:35,273 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2021-10-21 19:35:35,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:35:35,275 INFO L225 Difference]: With dead ends: 146 [2021-10-21 19:35:35,275 INFO L226 Difference]: Without dead ends: 146 [2021-10-21 19:35:35,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 56 SyntacticMatches, 9 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 221.9ms TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:35:35,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-21 19:35:35,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 122. [2021-10-21 19:35:35,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 89 states have internal predecessors, (93), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-10-21 19:35:35,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 128 transitions. [2021-10-21 19:35:35,293 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 128 transitions. Word has length 38 [2021-10-21 19:35:35,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:35:35,293 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 128 transitions. [2021-10-21 19:35:35,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 19:35:35,293 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 128 transitions. [2021-10-21 19:35:35,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-21 19:35:35,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:35:35,295 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:35:35,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:35,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:35:35,506 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_kref_initErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:35:35,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:35,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1051272824, now seen corresponding path program 1 times [2021-10-21 19:35:35,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:35:35,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696748302] [2021-10-21 19:35:35,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:35,508 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:35:35,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:35:35,508 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:35:35,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-21 19:35:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:35,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:35:35,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:35,905 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:35,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:35:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:36,348 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:35:36,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696748302] [2021-10-21 19:35:36,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696748302] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 19:35:36,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:36,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-21 19:35:36,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649646677] [2021-10-21 19:35:36,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-21 19:35:36,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:35:36,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-21 19:35:36,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:35:36,350 INFO L87 Difference]: Start difference. First operand 122 states and 128 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-21 19:35:37,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:37,145 INFO L93 Difference]: Finished difference Result 134 states and 146 transitions. [2021-10-21 19:35:37,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 19:35:37,146 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2021-10-21 19:35:37,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:35:37,147 INFO L225 Difference]: With dead ends: 134 [2021-10-21 19:35:37,147 INFO L226 Difference]: Without dead ends: 130 [2021-10-21 19:35:37,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 861.2ms TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2021-10-21 19:35:37,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-21 19:35:37,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-10-21 19:35:37,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 78 states have (on average 1.294871794871795) internal successors, (101), 97 states have internal predecessors, (101), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-10-21 19:35:37,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 136 transitions. [2021-10-21 19:35:37,154 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 136 transitions. Word has length 38 [2021-10-21 19:35:37,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:35:37,154 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 136 transitions. [2021-10-21 19:35:37,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-21 19:35:37,154 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 136 transitions. [2021-10-21 19:35:37,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-21 19:35:37,155 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:35:37,155 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:35:37,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:37,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:35:37,367 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_kref_initErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:35:37,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:37,367 INFO L82 PathProgramCache]: Analyzing trace with hash -2061530616, now seen corresponding path program 2 times [2021-10-21 19:35:37,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:35:37,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169304100] [2021-10-21 19:35:37,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:35:37,368 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:35:37,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:35:37,369 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:35:37,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-21 19:35:37,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 19:35:37,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:35:37,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:35:37,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:37,661 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 [2021-10-21 19:35:38,101 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-10-21 19:35:38,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:35:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-10-21 19:35:39,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:35:39,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169304100] [2021-10-21 19:35:39,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169304100] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:39,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:39,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2021-10-21 19:35:39,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266777822] [2021-10-21 19:35:39,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-21 19:35:39,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:35:39,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-21 19:35:39,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-21 19:35:39,229 INFO L87 Difference]: Start difference. First operand 130 states and 136 transitions. Second operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 19:35:41,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:41,435 INFO L93 Difference]: Finished difference Result 129 states and 135 transitions. [2021-10-21 19:35:41,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:35:41,436 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 46 [2021-10-21 19:35:41,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:35:41,438 INFO L225 Difference]: With dead ends: 129 [2021-10-21 19:35:41,438 INFO L226 Difference]: Without dead ends: 129 [2021-10-21 19:35:41,438 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1080.6ms TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-10-21 19:35:41,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-21 19:35:41,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-10-21 19:35:41,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 96 states have internal predecessors, (100), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-10-21 19:35:41,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2021-10-21 19:35:41,442 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 46 [2021-10-21 19:35:41,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:35:41,443 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2021-10-21 19:35:41,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 19:35:41,443 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2021-10-21 19:35:41,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-21 19:35:41,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:35:41,444 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:35:41,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:41,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:35:41,656 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:35:41,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:41,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1631731192, now seen corresponding path program 1 times [2021-10-21 19:35:41,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:35:41,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477568010] [2021-10-21 19:35:41,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:41,658 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:35:41,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:35:41,659 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:35:41,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-21 19:35:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:41,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:35:41,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:42,264 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:42,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:35:43,231 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:43,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:35:43,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477568010] [2021-10-21 19:35:43,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477568010] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 19:35:43,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:43,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-10-21 19:35:43,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483982046] [2021-10-21 19:35:43,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-21 19:35:43,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:35:43,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-21 19:35:43,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2021-10-21 19:35:43,235 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-21 19:35:43,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:43,799 INFO L93 Difference]: Finished difference Result 135 states and 141 transitions. [2021-10-21 19:35:43,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-21 19:35:43,800 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2021-10-21 19:35:43,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:35:43,802 INFO L225 Difference]: With dead ends: 135 [2021-10-21 19:35:43,802 INFO L226 Difference]: Without dead ends: 131 [2021-10-21 19:35:43,803 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 775.0ms TimeCoverageRelationStatistics Valid=250, Invalid=940, Unknown=0, NotChecked=0, Total=1190 [2021-10-21 19:35:43,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-21 19:35:43,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-10-21 19:35:43,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 80 states have (on average 1.275) internal successors, (102), 98 states have internal predecessors, (102), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-10-21 19:35:43,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 137 transitions. [2021-10-21 19:35:43,808 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 137 transitions. Word has length 51 [2021-10-21 19:35:43,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:35:43,809 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 137 transitions. [2021-10-21 19:35:43,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-21 19:35:43,809 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 137 transitions. [2021-10-21 19:35:43,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-21 19:35:43,811 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:35:43,811 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:35:43,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:44,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:35:44,024 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:35:44,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:44,024 INFO L82 PathProgramCache]: Analyzing trace with hash -346949160, now seen corresponding path program 2 times [2021-10-21 19:35:44,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:35:44,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759763308] [2021-10-21 19:35:44,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:35:44,025 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:35:44,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:35:44,026 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:35:44,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-21 19:35:44,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 19:35:44,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:35:44,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:35:44,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:44,389 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 [2021-10-21 19:35:44,698 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:35:44,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:35:44,903 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:35:44,903 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:35:44,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759763308] [2021-10-21 19:35:44,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759763308] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:44,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:44,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 11 [2021-10-21 19:35:44,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767318641] [2021-10-21 19:35:44,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:35:44,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:35:44,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:35:44,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:35:44,905 INFO L87 Difference]: Start difference. First operand 131 states and 137 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-10-21 19:35:45,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:45,624 INFO L93 Difference]: Finished difference Result 153 states and 167 transitions. [2021-10-21 19:35:45,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:35:45,625 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 53 [2021-10-21 19:35:45,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:35:45,627 INFO L225 Difference]: With dead ends: 153 [2021-10-21 19:35:45,627 INFO L226 Difference]: Without dead ends: 153 [2021-10-21 19:35:45,627 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 85 SyntacticMatches, 10 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 204.4ms TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:35:45,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-21 19:35:45,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 129. [2021-10-21 19:35:45,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 80 states have (on average 1.25) internal successors, (100), 96 states have internal predecessors, (100), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-10-21 19:35:45,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2021-10-21 19:35:45,634 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 53 [2021-10-21 19:35:45,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:35:45,634 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2021-10-21 19:35:45,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-10-21 19:35:45,635 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2021-10-21 19:35:45,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-21 19:35:45,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:35:45,636 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:35:45,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:45,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:35:45,851 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:35:45,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:45,852 INFO L82 PathProgramCache]: Analyzing trace with hash -346949159, now seen corresponding path program 1 times [2021-10-21 19:35:45,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:35:45,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997383547] [2021-10-21 19:35:45,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:45,852 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:35:45,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:35:45,853 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:35:45,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-21 19:35:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:46,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:35:46,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:46,262 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 [2021-10-21 19:35:46,788 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:35:46,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:35:47,848 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:35:47,848 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:35:47,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997383547] [2021-10-21 19:35:47,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997383547] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:47,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:47,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2021-10-21 19:35:47,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532584132] [2021-10-21 19:35:47,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-21 19:35:47,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:35:47,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-21 19:35:47,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-21 19:35:47,850 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand has 23 states, 22 states have (on average 2.0) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-21 19:35:50,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:50,081 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2021-10-21 19:35:50,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:35:50,081 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) Word has length 53 [2021-10-21 19:35:50,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:35:50,082 INFO L225 Difference]: With dead ends: 127 [2021-10-21 19:35:50,082 INFO L226 Difference]: Without dead ends: 127 [2021-10-21 19:35:50,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1055.0ms TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-10-21 19:35:50,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-21 19:35:50,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-10-21 19:35:50,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 80 states have (on average 1.225) internal successors, (98), 94 states have internal predecessors, (98), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-10-21 19:35:50,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 133 transitions. [2021-10-21 19:35:50,088 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 133 transitions. Word has length 53 [2021-10-21 19:35:50,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:35:50,089 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 133 transitions. [2021-10-21 19:35:50,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-21 19:35:50,089 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 133 transitions. [2021-10-21 19:35:50,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-21 19:35:50,090 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:35:50,090 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:35:50,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:50,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:35:50,303 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:35:50,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:50,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1487182461, now seen corresponding path program 1 times [2021-10-21 19:35:50,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:35:50,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990943479] [2021-10-21 19:35:50,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:50,304 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:35:50,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:35:50,307 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:35:50,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-21 19:35:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:50,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:35:50,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:35:50,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:35:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:35:51,112 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:35:51,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990943479] [2021-10-21 19:35:51,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990943479] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:51,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:51,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-10-21 19:35:51,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794231650] [2021-10-21 19:35:51,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:35:51,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:35:51,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:35:51,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:35:51,114 INFO L87 Difference]: Start difference. First operand 127 states and 133 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 19:35:51,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:51,151 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2021-10-21 19:35:51,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:35:51,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2021-10-21 19:35:51,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:35:51,164 INFO L225 Difference]: With dead ends: 129 [2021-10-21 19:35:51,165 INFO L226 Difference]: Without dead ends: 127 [2021-10-21 19:35:51,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:35:51,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-21 19:35:51,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-10-21 19:35:51,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 80 states have (on average 1.2125) internal successors, (97), 93 states have internal predecessors, (97), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-10-21 19:35:51,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 132 transitions. [2021-10-21 19:35:51,176 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 132 transitions. Word has length 58 [2021-10-21 19:35:51,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:35:51,177 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 132 transitions. [2021-10-21 19:35:51,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 19:35:51,177 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 132 transitions. [2021-10-21 19:35:51,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-21 19:35:51,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:35:51,178 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:35:51,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:51,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:35:51,392 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:35:51,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:51,392 INFO L82 PathProgramCache]: Analyzing trace with hash -537222574, now seen corresponding path program 1 times [2021-10-21 19:35:51,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:35:51,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403214944] [2021-10-21 19:35:51,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:51,393 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:35:51,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:35:51,408 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:35:51,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-21 19:35:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:51,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:35:51,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:52,046 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:35:52,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:35:52,395 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:35:52,396 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:35:52,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403214944] [2021-10-21 19:35:52,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403214944] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:52,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:52,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 11 [2021-10-21 19:35:52,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789044245] [2021-10-21 19:35:52,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:35:52,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:35:52,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:35:52,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:35:52,399 INFO L87 Difference]: Start difference. First operand 127 states and 132 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-10-21 19:35:52,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:52,465 INFO L93 Difference]: Finished difference Result 131 states and 135 transitions. [2021-10-21 19:35:52,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:35:52,466 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 63 [2021-10-21 19:35:52,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:35:52,467 INFO L225 Difference]: With dead ends: 131 [2021-10-21 19:35:52,467 INFO L226 Difference]: Without dead ends: 127 [2021-10-21 19:35:52,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 96.2ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:35:52,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-21 19:35:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-10-21 19:35:52,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 80 states have (on average 1.2) internal successors, (96), 92 states have internal predecessors, (96), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-10-21 19:35:52,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 131 transitions. [2021-10-21 19:35:52,473 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 131 transitions. Word has length 63 [2021-10-21 19:35:52,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:35:52,473 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 131 transitions. [2021-10-21 19:35:52,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-10-21 19:35:52,474 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 131 transitions. [2021-10-21 19:35:52,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-21 19:35:52,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:35:52,475 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:35:52,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:52,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:35:52,688 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:35:52,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:52,688 INFO L82 PathProgramCache]: Analyzing trace with hash -964060479, now seen corresponding path program 1 times [2021-10-21 19:35:52,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:35:52,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907329412] [2021-10-21 19:35:52,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:52,696 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:35:52,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:35:52,697 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:35:52,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-21 19:35:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:53,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:35:53,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:53,217 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 [2021-10-21 19:35:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:35:53,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:35:54,111 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:35:54,111 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:35:54,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907329412] [2021-10-21 19:35:54,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907329412] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:54,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:54,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16, 15] imperfect sequences [] total 16 [2021-10-21 19:35:54,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011974712] [2021-10-21 19:35:54,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-21 19:35:54,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:35:54,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-21 19:35:54,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:35:54,113 INFO L87 Difference]: Start difference. First operand 127 states and 131 transitions. Second operand has 17 states, 13 states have (on average 4.230769230769231) internal successors, (55), 11 states have internal predecessors, (55), 7 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2021-10-21 19:35:55,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:55,233 INFO L93 Difference]: Finished difference Result 178 states and 198 transitions. [2021-10-21 19:35:55,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-21 19:35:55,234 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 4.230769230769231) internal successors, (55), 11 states have internal predecessors, (55), 7 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 74 [2021-10-21 19:35:55,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:35:55,236 INFO L225 Difference]: With dead ends: 178 [2021-10-21 19:35:55,236 INFO L226 Difference]: Without dead ends: 178 [2021-10-21 19:35:55,236 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 119 SyntacticMatches, 13 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 400.2ms TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2021-10-21 19:35:55,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-21 19:35:55,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2021-10-21 19:35:55,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 98 states have (on average 1.1938775510204083) internal successors, (117), 111 states have internal predecessors, (117), 22 states have call successors, (22), 21 states have call predecessors, (22), 22 states have return successors, (27), 21 states have call predecessors, (27), 21 states have call successors, (27) [2021-10-21 19:35:55,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 166 transitions. [2021-10-21 19:35:55,246 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 166 transitions. Word has length 74 [2021-10-21 19:35:55,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:35:55,246 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 166 transitions. [2021-10-21 19:35:55,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 4.230769230769231) internal successors, (55), 11 states have internal predecessors, (55), 7 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2021-10-21 19:35:55,247 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 166 transitions. [2021-10-21 19:35:55,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-21 19:35:55,248 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:35:55,248 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:35:55,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-21 19:35:55,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:35:55,469 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_atomic_sub_returnErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:35:55,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:55,470 INFO L82 PathProgramCache]: Analyzing trace with hash -964060478, now seen corresponding path program 1 times [2021-10-21 19:35:55,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:35:55,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938593615] [2021-10-21 19:35:55,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:55,471 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:35:55,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:35:55,472 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:35:55,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-21 19:35:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:56,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-21 19:35:56,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:56,112 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 [2021-10-21 19:35:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:35:56,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:35:58,773 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:35:58,773 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:35:58,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938593615] [2021-10-21 19:35:58,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938593615] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:58,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:58,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 16] imperfect sequences [] total 32 [2021-10-21 19:35:58,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508361195] [2021-10-21 19:35:58,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-21 19:35:58,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:35:58,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-21 19:35:58,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=965, Unknown=0, NotChecked=0, Total=1056 [2021-10-21 19:35:58,789 INFO L87 Difference]: Start difference. First operand 154 states and 166 transitions. Second operand has 33 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 21 states have internal predecessors, (70), 12 states have call successors, (23), 10 states have call predecessors, (23), 6 states have return successors, (15), 8 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-21 19:36:02,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:36:02,054 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2021-10-21 19:36:02,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 19:36:02,055 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 21 states have internal predecessors, (70), 12 states have call successors, (23), 10 states have call predecessors, (23), 6 states have return successors, (15), 8 states have call predecessors, (15), 4 states have call successors, (15) Word has length 74 [2021-10-21 19:36:02,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:36:02,056 INFO L225 Difference]: With dead ends: 152 [2021-10-21 19:36:02,056 INFO L226 Difference]: Without dead ends: 152 [2021-10-21 19:36:02,057 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 113 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 2104.9ms TimeCoverageRelationStatistics Valid=132, Invalid=1350, Unknown=0, NotChecked=0, Total=1482 [2021-10-21 19:36:02,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-21 19:36:02,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-10-21 19:36:02,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 98 states have (on average 1.153061224489796) internal successors, (113), 109 states have internal predecessors, (113), 22 states have call successors, (22), 21 states have call predecessors, (22), 22 states have return successors, (27), 21 states have call predecessors, (27), 21 states have call successors, (27) [2021-10-21 19:36:02,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions. [2021-10-21 19:36:02,064 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 74 [2021-10-21 19:36:02,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:36:02,064 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 162 transitions. [2021-10-21 19:36:02,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 21 states have internal predecessors, (70), 12 states have call successors, (23), 10 states have call predecessors, (23), 6 states have return successors, (15), 8 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-21 19:36:02,065 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 162 transitions. [2021-10-21 19:36:02,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-21 19:36:02,066 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:36:02,066 INFO L512 BasicCegarLoop]: trace histogram [16, 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, 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] [2021-10-21 19:36:02,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:02,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:36:02,267 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:36:02,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:02,267 INFO L82 PathProgramCache]: Analyzing trace with hash -770520951, now seen corresponding path program 1 times [2021-10-21 19:36:02,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:36:02,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125451500] [2021-10-21 19:36:02,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:02,268 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:36:02,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:36:02,269 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:36:02,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-21 19:36:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:02,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:36:02,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:36:03,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:36:03,552 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-10-21 19:36:03,552 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:36:03,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125451500] [2021-10-21 19:36:03,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125451500] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-21 19:36:03,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:36:03,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 11 [2021-10-21 19:36:03,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656931314] [2021-10-21 19:36:03,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:36:03,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:36:03,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:36:03,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:36:03,554 INFO L87 Difference]: Start difference. First operand 152 states and 162 transitions. Second operand has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2021-10-21 19:36:03,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:36:03,622 INFO L93 Difference]: Finished difference Result 153 states and 159 transitions. [2021-10-21 19:36:03,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:36:03,623 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 77 [2021-10-21 19:36:03,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:36:03,624 INFO L225 Difference]: With dead ends: 153 [2021-10-21 19:36:03,624 INFO L226 Difference]: Without dead ends: 149 [2021-10-21 19:36:03,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 79.2ms TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:36:03,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-21 19:36:03,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2021-10-21 19:36:03,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 97 states have (on average 1.134020618556701) internal successors, (110), 107 states have internal predecessors, (110), 21 states have call successors, (21), 21 states have call predecessors, (21), 21 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2021-10-21 19:36:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 155 transitions. [2021-10-21 19:36:03,630 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 155 transitions. Word has length 77 [2021-10-21 19:36:03,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:36:03,630 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 155 transitions. [2021-10-21 19:36:03,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2021-10-21 19:36:03,631 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 155 transitions. [2021-10-21 19:36:03,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-21 19:36:03,632 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:36:03,632 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:36:03,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:03,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:36:03,847 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_kobject_cleanupErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:36:03,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:03,847 INFO L82 PathProgramCache]: Analyzing trace with hash 810528448, now seen corresponding path program 1 times [2021-10-21 19:36:03,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:36:03,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564308075] [2021-10-21 19:36:03,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:03,848 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:36:03,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:36:03,849 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:36:03,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-21 19:36:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:04,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-21 19:36:04,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:04,596 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 [2021-10-21 19:36:05,436 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:36:05,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:36:05,950 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:36:05,950 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:36:05,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564308075] [2021-10-21 19:36:05,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564308075] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:36:05,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:36:05,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20, 19] imperfect sequences [] total 20 [2021-10-21 19:36:05,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437093287] [2021-10-21 19:36:05,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-21 19:36:05,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:36:05,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-21 19:36:05,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:36:05,953 INFO L87 Difference]: Start difference. First operand 149 states and 155 transitions. Second operand has 21 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 9 states have call successors, (23), 8 states have call predecessors, (23), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-21 19:36:07,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:36:07,698 INFO L93 Difference]: Finished difference Result 180 states and 196 transitions. [2021-10-21 19:36:07,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-21 19:36:07,698 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 9 states have call successors, (23), 8 states have call predecessors, (23), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 87 [2021-10-21 19:36:07,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:36:07,700 INFO L225 Difference]: With dead ends: 180 [2021-10-21 19:36:07,700 INFO L226 Difference]: Without dead ends: 180 [2021-10-21 19:36:07,701 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 137 SyntacticMatches, 17 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 783.6ms TimeCoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2021-10-21 19:36:07,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-21 19:36:07,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 155. [2021-10-21 19:36:07,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 101 states have (on average 1.1287128712871286) internal successors, (114), 110 states have internal predecessors, (114), 24 states have call successors, (24), 24 states have call predecessors, (24), 21 states have return successors, (27), 20 states have call predecessors, (27), 23 states have call successors, (27) [2021-10-21 19:36:07,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 165 transitions. [2021-10-21 19:36:07,710 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 165 transitions. Word has length 87 [2021-10-21 19:36:07,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:36:07,710 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 165 transitions. [2021-10-21 19:36:07,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 9 states have call successors, (23), 8 states have call predecessors, (23), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-21 19:36:07,727 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 165 transitions. [2021-10-21 19:36:07,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-21 19:36:07,728 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:36:07,729 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:36:07,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:07,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:36:07,945 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_kobject_cleanupErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:36:07,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:07,945 INFO L82 PathProgramCache]: Analyzing trace with hash 810528449, now seen corresponding path program 1 times [2021-10-21 19:36:07,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:36:07,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535708024] [2021-10-21 19:36:07,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:07,946 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:36:07,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:36:07,947 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:36:07,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-21 19:36:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:08,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-21 19:36:08,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:08,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:36:09,835 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:36:09,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:36:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:36:12,747 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:36:12,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535708024] [2021-10-21 19:36:12,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535708024] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:36:12,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:36:12,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21, 20] imperfect sequences [] total 40 [2021-10-21 19:36:12,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399823591] [2021-10-21 19:36:12,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-21 19:36:12,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:36:12,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-21 19:36:12,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1525, Unknown=0, NotChecked=0, Total=1640 [2021-10-21 19:36:12,749 INFO L87 Difference]: Start difference. First operand 155 states and 165 transitions. Second operand has 41 states, 32 states have (on average 2.75) internal successors, (88), 25 states have internal predecessors, (88), 16 states have call successors, (29), 14 states have call predecessors, (29), 6 states have return successors, (17), 10 states have call predecessors, (17), 6 states have call successors, (17) [2021-10-21 19:36:17,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:36:17,172 INFO L93 Difference]: Finished difference Result 153 states and 162 transitions. [2021-10-21 19:36:17,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 19:36:17,173 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 32 states have (on average 2.75) internal successors, (88), 25 states have internal predecessors, (88), 16 states have call successors, (29), 14 states have call predecessors, (29), 6 states have return successors, (17), 10 states have call predecessors, (17), 6 states have call successors, (17) Word has length 87 [2021-10-21 19:36:17,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:36:17,174 INFO L225 Difference]: With dead ends: 153 [2021-10-21 19:36:17,174 INFO L226 Difference]: Without dead ends: 153 [2021-10-21 19:36:17,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 129 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 3317.1ms TimeCoverageRelationStatistics Valid=170, Invalid=2182, Unknown=0, NotChecked=0, Total=2352 [2021-10-21 19:36:17,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-21 19:36:17,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-10-21 19:36:17,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 101 states have (on average 1.099009900990099) internal successors, (111), 108 states have internal predecessors, (111), 24 states have call successors, (24), 24 states have call predecessors, (24), 21 states have return successors, (27), 20 states have call predecessors, (27), 23 states have call successors, (27) [2021-10-21 19:36:17,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 162 transitions. [2021-10-21 19:36:17,180 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 162 transitions. Word has length 87 [2021-10-21 19:36:17,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:36:17,180 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 162 transitions. [2021-10-21 19:36:17,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 32 states have (on average 2.75) internal successors, (88), 25 states have internal predecessors, (88), 16 states have call successors, (29), 14 states have call predecessors, (29), 6 states have return successors, (17), 10 states have call predecessors, (17), 6 states have call successors, (17) [2021-10-21 19:36:17,181 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 162 transitions. [2021-10-21 19:36:17,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-21 19:36:17,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:36:17,182 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:36:17,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-21 19:36:17,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:36:17,408 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:36:17,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:17,408 INFO L82 PathProgramCache]: Analyzing trace with hash 147123437, now seen corresponding path program 1 times [2021-10-21 19:36:17,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:36:17,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414188322] [2021-10-21 19:36:17,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:17,409 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:36:17,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:36:17,410 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:36:17,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-21 19:36:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:18,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 19:36:18,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:19,627 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:36:19,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:36:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:36:20,571 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:36:20,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414188322] [2021-10-21 19:36:20,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414188322] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:36:20,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:36:20,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21, 19] imperfect sequences [] total 39 [2021-10-21 19:36:20,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945434971] [2021-10-21 19:36:20,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-21 19:36:20,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:36:20,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-21 19:36:20,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1410, Unknown=0, NotChecked=0, Total=1560 [2021-10-21 19:36:20,574 INFO L87 Difference]: Start difference. First operand 153 states and 162 transitions. Second operand has 40 states, 31 states have (on average 3.161290322580645) internal successors, (98), 24 states have internal predecessors, (98), 17 states have call successors, (33), 15 states have call predecessors, (33), 7 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) [2021-10-21 19:36:22,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:36:22,499 INFO L93 Difference]: Finished difference Result 152 states and 161 transitions. [2021-10-21 19:36:22,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 19:36:22,500 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 31 states have (on average 3.161290322580645) internal successors, (98), 24 states have internal predecessors, (98), 17 states have call successors, (33), 15 states have call predecessors, (33), 7 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) Word has length 90 [2021-10-21 19:36:22,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:36:22,502 INFO L225 Difference]: With dead ends: 152 [2021-10-21 19:36:22,502 INFO L226 Difference]: Without dead ends: 152 [2021-10-21 19:36:22,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 136 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 1623.6ms TimeCoverageRelationStatistics Valid=206, Invalid=1956, Unknown=0, NotChecked=0, Total=2162 [2021-10-21 19:36:22,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-21 19:36:22,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-10-21 19:36:22,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 101 states have (on average 1.0891089108910892) internal successors, (110), 107 states have internal predecessors, (110), 24 states have call successors, (24), 24 states have call predecessors, (24), 21 states have return successors, (27), 20 states have call predecessors, (27), 23 states have call successors, (27) [2021-10-21 19:36:22,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 161 transitions. [2021-10-21 19:36:22,509 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 161 transitions. Word has length 90 [2021-10-21 19:36:22,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:36:22,510 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 161 transitions. [2021-10-21 19:36:22,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 31 states have (on average 3.161290322580645) internal successors, (98), 24 states have internal predecessors, (98), 17 states have call successors, (33), 15 states have call predecessors, (33), 7 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) [2021-10-21 19:36:22,510 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 161 transitions. [2021-10-21 19:36:22,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-21 19:36:22,512 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:36:22,512 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-10-21 19:36:22,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:22,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:36:22,728 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-21 19:36:22,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:22,729 INFO L82 PathProgramCache]: Analyzing trace with hash 2088002500, now seen corresponding path program 1 times [2021-10-21 19:36:22,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:36:22,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663650898] [2021-10-21 19:36:22,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:22,730 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:36:22,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:36:22,730 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:36:22,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-21 19:36:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:23,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 115 conjunts are in the unsatisfiable core [2021-10-21 19:36:23,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:23,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-21 19:36:23,876 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-21 19:36:23,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-21 19:36:23,970 INFO L354 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2021-10-21 19:36:23,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 38 [2021-10-21 19:36:24,078 INFO L354 Elim1Store]: treesize reduction 116, result has 18.3 percent of original size [2021-10-21 19:36:24,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 53 [2021-10-21 19:36:24,255 INFO L354 Elim1Store]: treesize reduction 172, result has 16.9 percent of original size [2021-10-21 19:36:24,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 66 [2021-10-21 19:36:24,472 INFO L354 Elim1Store]: treesize reduction 256, result has 14.7 percent of original size [2021-10-21 19:36:24,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 70 treesize of output 81 [2021-10-21 19:36:24,755 INFO L354 Elim1Store]: treesize reduction 352, result has 13.3 percent of original size [2021-10-21 19:36:24,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 82 treesize of output 96 [2021-10-21 19:36:25,107 INFO L354 Elim1Store]: treesize reduction 462, result has 12.2 percent of original size [2021-10-21 19:36:25,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 94 treesize of output 111 [2021-10-21 19:36:25,548 INFO L354 Elim1Store]: treesize reduction 540, result has 11.6 percent of original size [2021-10-21 19:36:25,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 102 treesize of output 122 [2021-10-21 19:36:26,081 INFO L354 Elim1Store]: treesize reduction 680, result has 10.5 percent of original size [2021-10-21 19:36:26,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 114 treesize of output 137 [2021-10-21 19:36:26,808 INFO L354 Elim1Store]: treesize reduction 796, result has 10.1 percent of original size [2021-10-21 19:36:26,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 124 treesize of output 150 [2021-10-21 19:36:27,558 INFO L354 Elim1Store]: treesize reduction 964, result has 9.2 percent of original size [2021-10-21 19:36:27,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 136 treesize of output 165 [2021-10-21 19:36:28,547 INFO L354 Elim1Store]: treesize reduction 1100, result has 8.9 percent of original size [2021-10-21 19:36:28,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 146 treesize of output 178 [2021-10-21 19:36:29,645 INFO L354 Elim1Store]: treesize reduction 1270, result has 8.4 percent of original size [2021-10-21 19:36:29,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 157 treesize of output 192 [2021-10-21 19:36:30,845 INFO L354 Elim1Store]: treesize reduction 1452, result has 7.9 percent of original size [2021-10-21 19:36:30,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 168 treesize of output 206 [2021-10-21 19:36:32,377 INFO L354 Elim1Store]: treesize reduction 1646, result has 7.5 percent of original size [2021-10-21 19:36:32,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 179 treesize of output 220 [2021-10-21 19:36:37,711 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base| (let ((.cse0 (bvadd (_ bv4 32) |c_ldv_kobject_init_internal_#in~kobj.offset|))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base|) (bvadd |c_ldv_kobject_init_internal_#in~kobj.offset| (_ bv12 32)) v_DerPreprocessor_1) (bvadd (_ bv13 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_2) (bvadd (_ bv14 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_3) (bvadd (_ bv15 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_4) .cse0 .cse0) (bvadd (_ bv8 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) .cse0))) |c_#memory_$Pointer$.offset|)) is different from true [2021-10-21 19:36:39,781 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_#in~kobj.base| (let ((.cse0 (bvadd (_ bv4 32) |c_ldv_kobject_init_#in~kobj.offset|))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_#in~kobj.base|) (bvadd |c_ldv_kobject_init_#in~kobj.offset| (_ bv12 32)) v_DerPreprocessor_1) (bvadd (_ bv13 32) |c_ldv_kobject_init_#in~kobj.offset|) v_DerPreprocessor_2) (bvadd (_ bv14 32) |c_ldv_kobject_init_#in~kobj.offset|) v_DerPreprocessor_3) (bvadd |c_ldv_kobject_init_#in~kobj.offset| (_ bv15 32)) v_DerPreprocessor_4) .cse0 .cse0) (bvadd (_ bv8 32) |c_ldv_kobject_init_#in~kobj.offset|) .cse0))))) is different from true [2021-10-21 19:36:39,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:39,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:40,004 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 19:36:40,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 185 treesize of output 195 [2021-10-21 19:36:45,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:36:45,382 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 19:36:45,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 120 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 133 treesize of output 121 [2021-10-21 19:36:47,876 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 19:36:47,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 92 treesize of output 40 [2021-10-21 19:36:48,403 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:36:48,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:39:04,610 WARN L207 SmtUtils]: Spent 2.18 m on a formula simplification that was a NOOP. DAG size: 152 [2021-10-21 19:39:12,541 WARN L207 SmtUtils]: Spent 6.15 s on a formula simplification that was a NOOP. DAG size: 106 [2021-10-21 19:39:19,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2021-10-21 19:40:38,835 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_kobject_init_#in~kobj.base_BEFORE_CALL_4| (_ BitVec 32)) (|v_ldv_kobject_init_#in~kobj.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base| (let ((.cse0 (bvadd (_ bv4 32) |c_ldv_kobject_init_internal_#in~kobj.offset|))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base|) (bvadd |c_ldv_kobject_init_internal_#in~kobj.offset| (_ bv12 32)) v_DerPreprocessor_17) (bvadd (_ bv13 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_18) (bvadd (_ bv14 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_19) (bvadd (_ bv15 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_20) .cse0 .cse0) (bvadd (_ bv8 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) .cse0))) |v_ldv_kobject_init_#in~kobj.base_BEFORE_CALL_4|) |v_ldv_kobject_init_#in~kobj.offset_BEFORE_CALL_2|) (_ bv0 32)))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.offset| c_ldv_kobject_init_internal_~kobj.base (let ((.cse1 (bvadd (_ bv4 32) c_ldv_kobject_init_internal_~kobj.offset))) (store (store (select |c_#memory_$Pointer$.offset| c_ldv_kobject_init_internal_~kobj.base) .cse1 .cse1) (bvadd (_ bv8 32) c_ldv_kobject_init_internal_~kobj.offset) .cse1))) |v_ldv_kobject_init_#in~kobj.base_BEFORE_CALL_4|) |v_ldv_kobject_init_#in~kobj.offset_BEFORE_CALL_2|)))) is different from false [2021-10-21 19:40:39,149 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 19:40:39,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3830258 treesize of output 3821565 [2021-10-21 19:40:54,167 WARN L207 SmtUtils]: Spent 15.01 s on a formula simplification that was a NOOP. DAG size: 2072 [2021-10-21 19:47:28,110 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-21 19:47:28,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-21 19:47:28,112 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:47:28,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663650898] [2021-10-21 19:47:28,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-21 19:47:28,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [110511714] [2021-10-21 19:47:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:28,113 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-21 19:47:28,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/cvc4 [2021-10-21 19:47:28,114 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-21 19:47:28,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-21 19:47:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:47:30,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 111 conjunts are in the unsatisfiable core [2021-10-21 19:47:30,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:47:30,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-21 19:47:30,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940170269] [2021-10-21 19:47:30,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:30,048 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:47:30,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:47:30,050 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:47:30,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-21 19:47:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:47:31,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 117 conjunts are in the unsatisfiable core [2021-10-21 19:47:31,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:47:31,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-21 19:47:31,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:47:31,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-21 19:47:31,194 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-21 19:47:31,195 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-21 19:47:31,203 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:47:31,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-10-21 19:47:31,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-10-21 19:47:31,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-10-21 19:47:31,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-10-21 19:47:31,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-10-21 19:47:31,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-10-21 19:47:31,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-10-21 19:47:31,208 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-10-21 19:47:31,208 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-10-21 19:47:31,208 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-10-21 19:47:31,208 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-10-21 19:47:31,208 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-10-21 19:47:31,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-10-21 19:47:31,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-10-21 19:47:31,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-10-21 19:47:31,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-10-21 19:47:31,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-10-21 19:47:31,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-10-21 19:47:31,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-10-21 19:47:31,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-10-21 19:47:31,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-10-21 19:47:31,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-10-21 19:47:31,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-10-21 19:47:31,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-10-21 19:47:31,211 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-10-21 19:47:31,211 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-10-21 19:47:31,211 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-10-21 19:47:31,211 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-10-21 19:47:31,211 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-10-21 19:47:31,211 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-10-21 19:47:31,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-10-21 19:47:31,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-10-21 19:47:31,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-10-21 19:47:31,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-10-21 19:47:31,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-10-21 19:47:31,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-10-21 19:47:31,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-10-21 19:47:31,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-10-21 19:47:31,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-10-21 19:47:31,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-10-21 19:47:31,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-10-21 19:47:31,214 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-10-21 19:47:31,214 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:47:31,214 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:47:31,214 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:47:31,214 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:47:31,215 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:47:31,215 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:47:31,215 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 19:47:31,215 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-10-21 19:47:31,215 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-10-21 19:47:31,215 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-10-21 19:47:31,216 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-10-21 19:47:31,216 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-10-21 19:47:31,216 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-10-21 19:47:31,216 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-10-21 19:47:31,216 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-10-21 19:47:31,217 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:47:31,217 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:47:31,217 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:47:31,217 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:47:31,217 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:47:31,217 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-10-21 19:47:31,218 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-10-21 19:47:31,218 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-10-21 19:47:31,218 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-10-21 19:47:31,218 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-10-21 19:47:31,218 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-10-21 19:47:31,219 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-10-21 19:47:31,219 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-10-21 19:47:31,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-21 19:47:31,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-21 19:47:31,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2021-10-21 19:47:31,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ff1b0-2037-4c65-8410-c48c6ce891ec/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt [2021-10-21 19:47:31,850 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:47:31,853 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-10-21 19:47:31,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:47:31 BoogieIcfgContainer [2021-10-21 19:47:31,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:47:31,864 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:47:31,864 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:47:31,864 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:47:31,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:35:26" (3/4) ... [2021-10-21 19:47:31,867 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:47:31,867 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:47:31,868 INFO L168 Benchmark]: Toolchain (without parser) took 727929.74 ms. Allocated memory was 65.0 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 42.1 MB in the beginning and 708.0 MB in the end (delta: -665.9 MB). Peak memory consumption was 860.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:47:31,869 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 65.0 MB. Free memory was 45.1 MB in the beginning and 45.0 MB in the end (delta: 51.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:47:31,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 782.96 ms. Allocated memory is still 65.0 MB. Free memory was 42.0 MB in the beginning and 29.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:47:31,869 INFO L168 Benchmark]: Boogie Preprocessor took 159.16 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 29.6 MB in the beginning and 59.6 MB in the end (delta: -30.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:47:31,870 INFO L168 Benchmark]: RCFGBuilder took 1367.82 ms. Allocated memory is still 81.8 MB. Free memory was 59.6 MB in the beginning and 34.8 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:47:31,870 INFO L168 Benchmark]: TraceAbstraction took 725610.99 ms. Allocated memory was 81.8 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 34.4 MB in the beginning and 709.0 MB in the end (delta: -674.6 MB). Peak memory consumption was 835.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:47:31,870 INFO L168 Benchmark]: Witness Printer took 3.79 ms. Allocated memory is still 1.6 GB. Free memory is still 708.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:47:31,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 65.0 MB. Free memory was 45.1 MB in the beginning and 45.0 MB in the end (delta: 51.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 782.96 ms. Allocated memory is still 65.0 MB. Free memory was 42.0 MB in the beginning and 29.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 159.16 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 29.6 MB in the beginning and 59.6 MB in the end (delta: -30.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1367.82 ms. Allocated memory is still 81.8 MB. Free memory was 59.6 MB in the beginning and 34.8 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 725610.99 ms. Allocated memory was 81.8 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 34.4 MB in the beginning and 709.0 MB in the end (delta: -674.6 MB). Peak memory consumption was 835.5 MB. Max. memory is 16.1 GB. * Witness Printer took 3.79 ms. Allocated memory is still 1.6 GB. Free memory is still 708.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) * 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: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L764] CALL entry_point() [L758] struct ldv_kobject *kobj; [L759] CALL, EXPR ldv_kobject_create() [L740] struct ldv_kobject *kobj; [L741] CALL, EXPR ldv_malloc(sizeof(*kobj)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L741] RET, EXPR ldv_malloc(sizeof(*kobj)) [L741] kobj = ldv_malloc(sizeof(*kobj)) [L742] COND FALSE !(!kobj) [L744] FCALL memset(kobj, 0, sizeof(*kobj)) [L745] CALL ldv_kobject_init(kobj) [L730] COND FALSE !(!kobj) [L733] CALL ldv_kobject_init_internal(kobj) [L723] COND FALSE !(!kobj) [L725] CALL ldv_kref_init(&kobj->kref) [L682] ((&kref->refcount)->counter) = (1) [L725] RET ldv_kref_init(&kobj->kref) [L726] CALL LDV_INIT_LIST_HEAD(&kobj->entry) [L540] list->next = list [L541] list->prev = list [L726] RET LDV_INIT_LIST_HEAD(&kobj->entry) [L733] RET ldv_kobject_init_internal(kobj) [L745] RET ldv_kobject_init(kobj) [L746] return kobj; [L759] RET, EXPR ldv_kobject_create() [L759] kobj = ldv_kobject_create() [L760] CALL ldv_kobject_put(kobj) [L711] COND TRUE \read(*kobj) [L712] CALL ldv_kref_put(&kobj->kref, ldv_kobject_release) [L690] CALL ldv_kref_sub(kref, 1, release) [L674] CALL, EXPR ldv_atomic_sub_return(((int) count), (&kref->refcount)) [L665] int temp; [L666] EXPR v->counter [L666] temp = v->counter [L667] temp -= i [L668] v->counter = temp [L669] return temp; [L674] RET, EXPR ldv_atomic_sub_return(((int) count), (&kref->refcount)) [L674] COND TRUE (ldv_atomic_sub_return(((int) count), (&kref->refcount)) == 0) [L675] CALL release(kref) [L706] const typeof( ((struct ldv_kobject *)0)->kref ) *__mptr = (kref); [L706] struct ldv_kobject *kobj = ({ const typeof( ((struct ldv_kobject *)0)->kref ) *__mptr = (kref); (struct ldv_kobject *)( (char *)__mptr - ((size_t) &((struct ldv_kobject *)0)->kref) );}); [L707] CALL ldv_kobject_cleanup(kobj) [L699] EXPR kobj->name [L699] char *name = kobj->name; [L700] free(kobj) [L700] free(kobj) [L700] free(kobj) [L701] COND TRUE \read(*name) [L702] free(name) - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 763]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed 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: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 47 procedures, 332 locations, 71 error locations. Started 1 CEGAR loops. OverallTime: 725529.5ms, OverallIterations: 23, TraceHistogramMax: 16, EmptinessCheckTime: 36.8ms, AutomataDifference: 21298.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2335 SDtfs, 1177 SDslu, 16412 SDs, 0 SdLazy, 9606 SolverSat, 326 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15629.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2236 GetRequests, 1790 SyntacticMatches, 69 SemanticMatches, 377 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1924 ImplicationChecksByTransitivity, 13203.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=20, InterpolantAutomatonStates: 266, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 209.2ms AutomataMinimizationTime, 22 MinimizatonAttempts, 124 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 360.5ms SsaConstructionTime, 1648.0ms SatisfiabilityAnalysisTime, 21943.5ms InterpolantComputationTime, 1096 NumberOfCodeBlocks, 1060 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2148 ConstructedInterpolants, 306 QuantifiedInterpolants, 9192 SizeOfPredicates, 94 NumberOfNonLiveVariables, 4681 ConjunctsInSsa, 325 ConjunctsInUnsatCore, 44 InterpolantComputations, 37 PerfectInterpolantSequences, 2985/3246 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 Received shutdown request...