./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.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_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/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_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/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_325e8370-9e3a-4000-a1d0-8cab89075b4f/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 43f8392da149a5e37da963296eece1aed541fa66405941aca1908b78e9471c4c ................................................................................................................................... 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_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/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_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/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_325e8370-9e3a-4000-a1d0-8cab89075b4f/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 43f8392da149a5e37da963296eece1aed541fa66405941aca1908b78e9471c4c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 20:26:56,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:26:56,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:26:56,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:26:56,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:26:56,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:26:56,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:26:56,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:26:56,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:26:56,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:26:56,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:26:56,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:26:56,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:26:56,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:26:56,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:26:56,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:26:56,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:26:56,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:26:56,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:26:56,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:26:56,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:26:56,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:26:56,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:26:56,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:26:56,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:26:56,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:26:56,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:26:56,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:26:56,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:26:56,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:26:56,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:26:56,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:26:56,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:26:56,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:26:56,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:26:56,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:26:56,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:26:56,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:26:56,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:26:56,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:26:56,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:26:56,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 20:26:56,643 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:26:56,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:26:56,644 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:26:56,645 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:26:56,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:26:56,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:26:56,646 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:26:56,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:26:56,647 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:26:56,647 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:26:56,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:26:56,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:26:56,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:26:56,653 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 20:26:56,653 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 20:26:56,653 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 20:26:56,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:26:56,654 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 20:26:56,654 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:26:56,654 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:26:56,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:26:56,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:26:56,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:26:56,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:26:56,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:26:56,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:26:56,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:26:56,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:26:56,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:26:56,657 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_325e8370-9e3a-4000-a1d0-8cab89075b4f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43f8392da149a5e37da963296eece1aed541fa66405941aca1908b78e9471c4c [2021-10-21 20:26:56,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:26:57,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:26:57,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:26:57,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:26:57,019 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:26:57,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i [2021-10-21 20:26:57,090 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/data/d5b36bea0/3e97d6b627d4421eb9de67a0058b8476/FLAG37d2ec03d [2021-10-21 20:26:57,775 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:26:57,775 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i [2021-10-21 20:26:57,802 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/data/d5b36bea0/3e97d6b627d4421eb9de67a0058b8476/FLAG37d2ec03d [2021-10-21 20:26:57,977 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/data/d5b36bea0/3e97d6b627d4421eb9de67a0058b8476 [2021-10-21 20:26:57,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:26:57,981 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 20:26:57,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:26:57,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:26:57,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:26:57,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:26:57" (1/1) ... [2021-10-21 20:26:57,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6108a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:57, skipping insertion in model container [2021-10-21 20:26:57,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:26:57" (1/1) ... [2021-10-21 20:26:57,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:26:58,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:26:58,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:26:58,471 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 20:26:58,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6af56e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:58, skipping insertion in model container [2021-10-21 20:26:58,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:26:58,472 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-21 20:26:58,474 INFO L168 Benchmark]: Toolchain (without parser) took 492.21 ms. Allocated memory is still 119.5 MB. Free memory was 77.4 MB in the beginning and 89.9 MB in the end (delta: -12.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:58,475 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 119.5 MB. Free memory was 95.3 MB in the beginning and 95.3 MB in the end (delta: 59.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:26:58,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 489.36 ms. Allocated memory is still 119.5 MB. Free memory was 77.3 MB in the beginning and 89.9 MB in the end (delta: -12.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:58,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 119.5 MB. Free memory was 95.3 MB in the beginning and 95.3 MB in the end (delta: 59.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 489.36 ms. Allocated memory is still 119.5 MB. Free memory was 77.3 MB in the beginning and 89.9 MB in the end (delta: -12.6 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 20:27:00,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:27:00,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:27:00,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:27:00,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:27:00,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:27:00,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:27:00,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:27:00,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:27:00,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:27:00,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:27:00,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:27:00,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:27:00,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:27:00,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:27:00,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:27:00,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:27:00,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:27:00,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:27:00,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:27:00,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:27:00,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:27:00,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:27:00,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:27:00,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:27:00,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:27:00,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:27:00,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:27:00,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:27:00,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:27:00,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:27:00,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:27:00,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:27:00,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:27:00,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:27:00,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:27:00,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:27:00,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:27:00,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:27:00,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:27:00,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:27:00,885 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-21 20:27:00,931 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:27:00,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:27:00,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:27:00,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:27:00,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:27:00,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:27:00,935 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:27:00,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:27:00,936 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:27:00,937 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:27:00,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:27:00,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:27:00,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:27:00,939 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 20:27:00,939 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 20:27:00,939 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 20:27:00,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:27:00,940 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 20:27:00,940 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:27:00,940 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:27:00,941 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:27:00,941 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:27:00,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:27:00,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:27:00,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:27:00,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:27:00,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:27:00,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:27:00,943 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:27:00,943 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:27:00,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:27:00,944 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:27:00,944 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_325e8370-9e3a-4000-a1d0-8cab89075b4f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43f8392da149a5e37da963296eece1aed541fa66405941aca1908b78e9471c4c [2021-10-21 20:27:01,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:27:01,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:27:01,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:27:01,398 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:27:01,399 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:27:01,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i [2021-10-21 20:27:01,467 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/data/10e512ae4/4f9112ef87e847e19f49a707b3eb0083/FLAGd075f0583 [2021-10-21 20:27:02,236 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:27:02,237 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i [2021-10-21 20:27:02,251 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/data/10e512ae4/4f9112ef87e847e19f49a707b3eb0083/FLAGd075f0583 [2021-10-21 20:27:02,481 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/data/10e512ae4/4f9112ef87e847e19f49a707b3eb0083 [2021-10-21 20:27:02,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:27:02,499 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 20:27:02,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:27:02,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:27:02,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:27:02,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:27:02" (1/1) ... [2021-10-21 20:27:02,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da69680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:02, skipping insertion in model container [2021-10-21 20:27:02,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:27:02" (1/1) ... [2021-10-21 20:27:02,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:27:02,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:27:02,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:27:02,987 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-21 20:27:03,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:27:03,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:27:03,082 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:27:03,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:27:03,208 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:27:03,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:03 WrapperNode [2021-10-21 20:27:03,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:27:03,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:27:03,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:27:03,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:27:03,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:03" (1/1) ... [2021-10-21 20:27:03,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:03" (1/1) ... [2021-10-21 20:27:03,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:03" (1/1) ... [2021-10-21 20:27:03,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:03" (1/1) ... [2021-10-21 20:27:03,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:03" (1/1) ... [2021-10-21 20:27:03,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:03" (1/1) ... [2021-10-21 20:27:03,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:03" (1/1) ... [2021-10-21 20:27:03,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:27:03,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:27:03,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:27:03,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:27:03,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:03" (1/1) ... [2021-10-21 20:27:03,350 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:27:03,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:27:03,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:27:03,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:27:03,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 20:27:03,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:27:03,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-10-21 20:27:03,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 20:27:03,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 20:27:03,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 20:27:03,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 20:27:03,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 20:27:03,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 20:27:03,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-10-21 20:27:03,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-10-21 20:27:03,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-10-21 20:27:03,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-10-21 20:27:03,432 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-10-21 20:27:03,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-10-21 20:27:03,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-10-21 20:27:03,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-10-21 20:27:03,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-10-21 20:27:03,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-10-21 20:27:03,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-10-21 20:27:03,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-10-21 20:27:03,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-10-21 20:27:03,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-10-21 20:27:03,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-10-21 20:27:03,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-10-21 20:27:03,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-10-21 20:27:03,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-10-21 20:27:03,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-10-21 20:27:03,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-10-21 20:27:03,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-10-21 20:27:03,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-10-21 20:27:03,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-10-21 20:27:03,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-10-21 20:27:03,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-10-21 20:27:03,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-10-21 20:27:03,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-10-21 20:27:03,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-10-21 20:27:03,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-10-21 20:27:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-10-21 20:27:03,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-10-21 20:27:03,445 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-21 20:27:03,445 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-21 20:27:03,445 INFO L138 BoogieDeclarations]: Found implementation of procedure f_22_get [2021-10-21 20:27:03,445 INFO L138 BoogieDeclarations]: Found implementation of procedure f_22_put [2021-10-21 20:27:03,446 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-10-21 20:27:03,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 20:27:03,446 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-21 20:27:03,446 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-10-21 20:27:03,446 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-10-21 20:27:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 20:27:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 20:27:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 20:27:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 20:27:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 20:27:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 20:27:03,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 20:27:03,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 20:27:03,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 20:27:03,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 20:27:03,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 20:27:03,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 20:27:03,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 20:27:03,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 20:27:03,449 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 20:27:03,449 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 20:27:03,449 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 20:27:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 20:27:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 20:27:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 20:27:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 20:27:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 20:27:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 20:27:03,451 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 20:27:03,451 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 20:27:03,451 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 20:27:03,451 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 20:27:03,451 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 20:27:03,451 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 20:27:03,452 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 20:27:03,452 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 20:27:03,452 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 20:27:03,452 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 20:27:03,452 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 20:27:03,452 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 20:27:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 20:27:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 20:27:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 20:27:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 20:27:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 20:27:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 20:27:03,454 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 20:27:03,454 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 20:27:03,454 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 20:27:03,454 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 20:27:03,454 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 20:27:03,454 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 20:27:03,455 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 20:27:03,455 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 20:27:03,455 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 20:27:03,455 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 20:27:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 20:27:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 20:27:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 20:27:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 20:27:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 20:27:03,457 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 20:27:03,457 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 20:27:03,457 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 20:27:03,457 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 20:27:03,457 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 20:27:03,457 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 20:27:03,458 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 20:27:03,458 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 20:27:03,458 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 20:27:03,458 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 20:27:03,458 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 20:27:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 20:27:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 20:27:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 20:27:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 20:27:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 20:27:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 20:27:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 20:27:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 20:27:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 20:27:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 20:27:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 20:27:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 20:27:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 20:27:03,467 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 20:27:03,467 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 20:27:03,467 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 20:27:03,468 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 20:27:03,472 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 20:27:03,472 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 20:27:03,472 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 20:27:03,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 20:27:03,472 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 20:27:03,472 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 20:27:03,473 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 20:27:03,473 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 20:27:03,473 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 20:27:03,473 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 20:27:03,473 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 20:27:03,473 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 20:27:03,473 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 20:27:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 20:27:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 20:27:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 20:27:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 20:27:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 20:27:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 20:27:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 20:27:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 20:27:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 20:27:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 20:27:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-10-21 20:27:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 20:27:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-10-21 20:27:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-10-21 20:27:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-21 20:27:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-21 20:27:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-10-21 20:27:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 20:27:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-10-21 20:27:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-10-21 20:27:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-10-21 20:27:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 20:27:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-10-21 20:27:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-10-21 20:27:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-10-21 20:27:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 20:27:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-10-21 20:27:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-10-21 20:27:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-10-21 20:27:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-10-21 20:27:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-10-21 20:27:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-10-21 20:27:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:27:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-10-21 20:27:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-10-21 20:27:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-10-21 20:27:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-10-21 20:27:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-10-21 20:27:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 20:27:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-21 20:27:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-10-21 20:27:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-10-21 20:27:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-10-21 20:27:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-10-21 20:27:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-10-21 20:27:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-10-21 20:27:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-10-21 20:27:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-10-21 20:27:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-10-21 20:27:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-10-21 20:27:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-10-21 20:27:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-10-21 20:27:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-10-21 20:27:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-10-21 20:27:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-21 20:27:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-21 20:27:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-21 20:27:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure f_22_get [2021-10-21 20:27:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure f_22_put [2021-10-21 20:27:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-10-21 20:27:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 20:27:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 20:27:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:27:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-21 20:27:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:27:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 20:27:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-10-21 20:27:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-10-21 20:27:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-21 20:27:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-21 20:27:04,009 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-21 20:27:04,529 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-21 20:27:04,842 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:27:04,843 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-21 20:27:04,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:27:04 BoogieIcfgContainer [2021-10-21 20:27:04,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:27:04,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:27:04,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:27:04,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:27:04,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:27:02" (1/3) ... [2021-10-21 20:27:04,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ee3579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:27:04, skipping insertion in model container [2021-10-21 20:27:04,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:03" (2/3) ... [2021-10-21 20:27:04,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ee3579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:27:04, skipping insertion in model container [2021-10-21 20:27:04,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:27:04" (3/3) ... [2021-10-21 20:27:04,861 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test22_5.i [2021-10-21 20:27:04,867 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:27:04,867 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-10-21 20:27:04,916 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:27:04,923 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 20:27:04,923 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-10-21 20:27:04,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 85 states have (on average 1.4588235294117646) internal successors, (124), 115 states have internal predecessors, (124), 21 states have call successors, (21), 19 states have call predecessors, (21), 19 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-10-21 20:27:04,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:27:04,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:04,950 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 20:27:04,950 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 20:27:04,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:04,965 INFO L82 PathProgramCache]: Analyzing trace with hash -604206848, now seen corresponding path program 1 times [2021-10-21 20:27:04,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:04,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574579070] [2021-10-21 20:27:04,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:04,982 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:04,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:04,987 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:05,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:27:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:05,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:27:05,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:05,340 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 20:27:05,413 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 20:27:05,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:05,537 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 20:27:05,537 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:05,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574579070] [2021-10-21 20:27:05,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574579070] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:05,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:05,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-21 20:27:05,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877843065] [2021-10-21 20:27:05,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:27:05,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:05,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:27:05,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:27:05,576 INFO L87 Difference]: Start difference. First operand has 155 states, 85 states have (on average 1.4588235294117646) internal successors, (124), 115 states have internal predecessors, (124), 21 states have call successors, (21), 19 states have call predecessors, (21), 19 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) 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 20:27:05,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:05,897 INFO L93 Difference]: Finished difference Result 137 states and 148 transitions. [2021-10-21 20:27:05,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:27:05,899 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 20:27:05,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:05,915 INFO L225 Difference]: With dead ends: 137 [2021-10-21 20:27:05,915 INFO L226 Difference]: Without dead ends: 134 [2021-10-21 20:27:05,916 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.3ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:27:05,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-21 20:27:05,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 128. [2021-10-21 20:27:05,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 71 states have (on average 1.3943661971830985) internal successors, (99), 92 states have internal predecessors, (99), 20 states have call successors, (20), 18 states have call predecessors, (20), 18 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2021-10-21 20:27:06,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2021-10-21 20:27:06,013 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 17 [2021-10-21 20:27:06,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:06,014 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2021-10-21 20:27:06,014 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 20:27:06,014 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2021-10-21 20:27:06,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:27:06,015 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:06,015 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 20:27:06,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:06,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:06,229 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 20:27:06,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:06,230 INFO L82 PathProgramCache]: Analyzing trace with hash -604206847, now seen corresponding path program 1 times [2021-10-21 20:27:06,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:06,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104410011] [2021-10-21 20:27:06,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:06,231 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:06,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:06,232 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:06,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:27:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:06,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 20:27:06,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:06,494 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 20:27:06,629 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 20:27:06,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:07,040 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 20:27:07,040 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:07,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104410011] [2021-10-21 20:27:07,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104410011] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:07,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:07,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-21 20:27:07,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762711141] [2021-10-21 20:27:07,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:27:07,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:07,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:27:07,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:27:07,052 INFO L87 Difference]: Start difference. First operand 128 states and 139 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 20:27:07,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:07,616 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2021-10-21 20:27:07,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:27:07,618 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 20:27:07,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:07,620 INFO L225 Difference]: With dead ends: 133 [2021-10-21 20:27:07,620 INFO L226 Difference]: Without dead ends: 133 [2021-10-21 20:27:07,621 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 248.4ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:27:07,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-21 20:27:07,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 128. [2021-10-21 20:27:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 70 states have (on average 1.4) internal successors, (98), 92 states have internal predecessors, (98), 20 states have call successors, (20), 18 states have call predecessors, (20), 18 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2021-10-21 20:27:07,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 138 transitions. [2021-10-21 20:27:07,642 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 138 transitions. Word has length 17 [2021-10-21 20:27:07,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:07,642 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 138 transitions. [2021-10-21 20:27:07,643 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 20:27:07,643 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 138 transitions. [2021-10-21 20:27:07,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:27:07,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:07,644 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 20:27:07,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-21 20:27:07,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:07,855 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 20:27:07,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:07,855 INFO L82 PathProgramCache]: Analyzing trace with hash -575577697, now seen corresponding path program 1 times [2021-10-21 20:27:07,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:07,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948740834] [2021-10-21 20:27:07,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:07,856 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:07,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:07,857 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:07,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 20:27:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:08,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:27:08,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:08,153 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 20:27:08,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:08,266 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 20:27:08,266 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:08,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948740834] [2021-10-21 20:27:08,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948740834] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:08,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:08,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 20:27:08,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194575222] [2021-10-21 20:27:08,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:27:08,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:08,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:27:08,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:27:08,272 INFO L87 Difference]: Start difference. First operand 128 states and 138 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 20:27:08,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:08,311 INFO L93 Difference]: Finished difference Result 127 states and 135 transitions. [2021-10-21 20:27:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:27:08,311 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 20:27:08,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:08,316 INFO L225 Difference]: With dead ends: 127 [2021-10-21 20:27:08,317 INFO L226 Difference]: Without dead ends: 127 [2021-10-21 20:27:08,317 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.0ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:27:08,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-21 20:27:08,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2021-10-21 20:27:08,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 69 states have (on average 1.3768115942028984) internal successors, (95), 89 states have internal predecessors, (95), 19 states have call successors, (19), 18 states have call predecessors, (19), 18 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) [2021-10-21 20:27:08,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2021-10-21 20:27:08,343 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 17 [2021-10-21 20:27:08,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:08,344 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2021-10-21 20:27:08,344 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 20:27:08,344 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2021-10-21 20:27:08,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-21 20:27:08,346 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:08,346 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] [2021-10-21 20:27:08,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:08,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:08,557 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 20:27:08,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:08,558 INFO L82 PathProgramCache]: Analyzing trace with hash -811306797, now seen corresponding path program 1 times [2021-10-21 20:27:08,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:08,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851127627] [2021-10-21 20:27:08,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:08,559 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:08,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:08,560 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:08,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 20:27:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:08,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:27:08,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:08,868 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 20:27:08,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:09,013 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 20:27:09,013 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:09,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851127627] [2021-10-21 20:27:09,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851127627] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:09,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:09,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 20:27:09,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842439728] [2021-10-21 20:27:09,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:27:09,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:09,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:27:09,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:27:09,016 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-21 20:27:09,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:09,057 INFO L93 Difference]: Finished difference Result 127 states and 134 transitions. [2021-10-21 20:27:09,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:27:09,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2021-10-21 20:27:09,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:09,060 INFO L225 Difference]: With dead ends: 127 [2021-10-21 20:27:09,060 INFO L226 Difference]: Without dead ends: 127 [2021-10-21 20:27:09,060 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.5ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:27:09,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-21 20:27:09,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2021-10-21 20:27:09,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 69 states have (on average 1.3623188405797102) internal successors, (94), 89 states have internal predecessors, (94), 19 states have call successors, (19), 18 states have call predecessors, (19), 18 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) [2021-10-21 20:27:09,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2021-10-21 20:27:09,074 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 31 [2021-10-21 20:27:09,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:09,074 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 132 transitions. [2021-10-21 20:27:09,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-21 20:27:09,074 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 132 transitions. [2021-10-21 20:27:09,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-21 20:27:09,076 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:09,076 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] [2021-10-21 20:27:09,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:09,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:09,300 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 20:27:09,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:09,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1220131022, now seen corresponding path program 1 times [2021-10-21 20:27:09,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:09,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653918669] [2021-10-21 20:27:09,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:09,301 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:09,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:09,302 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:09,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 20:27:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:09,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 20:27:09,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:09,777 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 20:27:09,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:09,972 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 20:27:09,972 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:09,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653918669] [2021-10-21 20:27:09,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653918669] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:09,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:09,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2021-10-21 20:27:09,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080364139] [2021-10-21 20:27:09,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:27:09,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:09,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:27:09,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:27:09,975 INFO L87 Difference]: Start difference. First operand 125 states and 132 transitions. Second operand has 9 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-21 20:27:10,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:10,103 INFO L93 Difference]: Finished difference Result 142 states and 151 transitions. [2021-10-21 20:27:10,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:27:10,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2021-10-21 20:27:10,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:10,106 INFO L225 Difference]: With dead ends: 142 [2021-10-21 20:27:10,106 INFO L226 Difference]: Without dead ends: 142 [2021-10-21 20:27:10,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 113.8ms TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:27:10,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-21 20:27:10,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 138. [2021-10-21 20:27:10,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 76 states have (on average 1.3289473684210527) internal successors, (101), 97 states have internal predecessors, (101), 22 states have call successors, (22), 20 states have call predecessors, (22), 21 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-10-21 20:27:10,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 146 transitions. [2021-10-21 20:27:10,117 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 146 transitions. Word has length 31 [2021-10-21 20:27:10,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:10,117 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 146 transitions. [2021-10-21 20:27:10,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-21 20:27:10,118 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 146 transitions. [2021-10-21 20:27:10,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 20:27:10,119 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:10,120 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 20:27:10,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:10,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:10,336 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 20:27:10,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:10,336 INFO L82 PathProgramCache]: Analyzing trace with hash 536113147, now seen corresponding path program 1 times [2021-10-21 20:27:10,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:10,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716229265] [2021-10-21 20:27:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:10,337 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:10,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:10,338 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:10,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 20:27:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:10,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 20:27:10,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:10,683 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 20:27:10,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:10,824 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 20:27:10,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:10,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716229265] [2021-10-21 20:27:10,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716229265] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:10,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:10,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-21 20:27:10,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919734555] [2021-10-21 20:27:10,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:27:10,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:10,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:27:10,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:27:10,829 INFO L87 Difference]: Start difference. First operand 138 states and 146 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 20:27:10,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:10,871 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2021-10-21 20:27:10,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:27:10,873 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 20:27:10,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:10,874 INFO L225 Difference]: With dead ends: 144 [2021-10-21 20:27:10,874 INFO L226 Difference]: Without dead ends: 140 [2021-10-21 20:27:10,875 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.6ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:27:10,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-21 20:27:10,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-10-21 20:27:10,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 78 states have (on average 1.3205128205128205) internal successors, (103), 99 states have internal predecessors, (103), 22 states have call successors, (22), 20 states have call predecessors, (22), 21 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-10-21 20:27:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 148 transitions. [2021-10-21 20:27:10,894 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 148 transitions. Word has length 32 [2021-10-21 20:27:10,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:10,897 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 148 transitions. [2021-10-21 20:27:10,898 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 20:27:10,899 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 148 transitions. [2021-10-21 20:27:10,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-21 20:27:10,901 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:10,901 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 20:27:10,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:11,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:11,116 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 20:27:11,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:11,117 INFO L82 PathProgramCache]: Analyzing trace with hash 690495131, now seen corresponding path program 1 times [2021-10-21 20:27:11,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:11,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076961294] [2021-10-21 20:27:11,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:11,118 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:11,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:11,121 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:11,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-21 20:27:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:11,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:27:11,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:11,469 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 20:27:11,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:11,671 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 20:27:11,671 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:11,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076961294] [2021-10-21 20:27:11,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076961294] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:27:11,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:27:11,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-21 20:27:11,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047586940] [2021-10-21 20:27:11,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:27:11,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:11,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:27:11,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:27:11,673 INFO L87 Difference]: Start difference. First operand 140 states and 148 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 20:27:11,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:11,837 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2021-10-21 20:27:11,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:27:11,838 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 20:27:11,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:11,839 INFO L225 Difference]: With dead ends: 148 [2021-10-21 20:27:11,840 INFO L226 Difference]: Without dead ends: 144 [2021-10-21 20:27:11,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 160.6ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:27:11,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-21 20:27:11,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-21 20:27:11,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 82 states have (on average 1.3048780487804879) internal successors, (107), 103 states have internal predecessors, (107), 22 states have call successors, (22), 20 states have call predecessors, (22), 21 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-10-21 20:27:11,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2021-10-21 20:27:11,846 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 34 [2021-10-21 20:27:11,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:11,847 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2021-10-21 20:27:11,847 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 20:27:11,847 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2021-10-21 20:27:11,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-21 20:27:11,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:11,849 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, 1, 1, 1, 1] [2021-10-21 20:27:11,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:12,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:12,065 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 20:27:12,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:12,065 INFO L82 PathProgramCache]: Analyzing trace with hash 780110635, now seen corresponding path program 1 times [2021-10-21 20:27:12,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:12,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221656057] [2021-10-21 20:27:12,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:12,065 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:12,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:12,066 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:12,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-21 20:27:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:12,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 20:27:12,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:12,397 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 20:27:12,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:12,705 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 20:27:12,705 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:12,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221656057] [2021-10-21 20:27:12,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221656057] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:12,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:12,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 20:27:12,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697922223] [2021-10-21 20:27:12,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:27:12,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:12,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:27:12,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:27:12,707 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-21 20:27:12,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:12,852 INFO L93 Difference]: Finished difference Result 157 states and 165 transitions. [2021-10-21 20:27:12,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:27:12,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 36 [2021-10-21 20:27:12,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:12,854 INFO L225 Difference]: With dead ends: 157 [2021-10-21 20:27:12,854 INFO L226 Difference]: Without dead ends: 137 [2021-10-21 20:27:12,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:27:12,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-21 20:27:12,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 127. [2021-10-21 20:27:12,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 92 states have internal predecessors, (96), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-21 20:27:12,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 133 transitions. [2021-10-21 20:27:12,859 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 133 transitions. Word has length 36 [2021-10-21 20:27:12,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:12,860 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 133 transitions. [2021-10-21 20:27:12,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-21 20:27:12,860 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 133 transitions. [2021-10-21 20:27:12,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-21 20:27:12,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:12,862 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 20:27:12,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:13,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:13,073 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 20:27:13,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:13,074 INFO L82 PathProgramCache]: Analyzing trace with hash -2002385957, now seen corresponding path program 2 times [2021-10-21 20:27:13,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:13,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509948729] [2021-10-21 20:27:13,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:27:13,074 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:13,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:13,075 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:13,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-21 20:27:13,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 20:27:13,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:27:13,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:27:13,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:13,343 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 20:27:13,596 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 20:27:13,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:13,827 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 20:27:13,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:13,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509948729] [2021-10-21 20:27:13,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509948729] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:13,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:13,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 11 [2021-10-21 20:27:13,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713397793] [2021-10-21 20:27:13,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:27:13,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:13,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:27:13,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:27:13,830 INFO L87 Difference]: Start difference. First operand 127 states and 133 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 20:27:14,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:14,691 INFO L93 Difference]: Finished difference Result 152 states and 166 transitions. [2021-10-21 20:27:14,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:27:14,692 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 20:27:14,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:14,694 INFO L225 Difference]: With dead ends: 152 [2021-10-21 20:27:14,695 INFO L226 Difference]: Without dead ends: 152 [2021-10-21 20:27:14,697 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 20:27:14,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-21 20:27:14,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 126. [2021-10-21 20:27:14,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 72 states have (on average 1.3194444444444444) internal successors, (95), 91 states have internal predecessors, (95), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-21 20:27:14,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 132 transitions. [2021-10-21 20:27:14,708 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 132 transitions. Word has length 38 [2021-10-21 20:27:14,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:14,709 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 132 transitions. [2021-10-21 20:27:14,709 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 20:27:14,709 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 132 transitions. [2021-10-21 20:27:14,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-21 20:27:14,712 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:14,712 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 20:27:14,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:14,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:14,922 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 20:27:14,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:14,923 INFO L82 PathProgramCache]: Analyzing trace with hash -2002385956, now seen corresponding path program 1 times [2021-10-21 20:27:14,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:14,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126652633] [2021-10-21 20:27:14,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:14,923 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:14,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:14,924 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:14,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-21 20:27:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:15,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 20:27:15,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:15,383 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 20:27:15,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:15,831 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 20:27:15,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:15,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126652633] [2021-10-21 20:27:15,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126652633] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:27:15,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:27:15,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-21 20:27:15,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149583728] [2021-10-21 20:27:15,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-21 20:27:15,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:15,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-21 20:27:15,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-10-21 20:27:15,834 INFO L87 Difference]: Start difference. First operand 126 states and 132 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 20:27:16,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:16,534 INFO L93 Difference]: Finished difference Result 138 states and 150 transitions. [2021-10-21 20:27:16,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 20:27:16,536 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 20:27:16,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:16,537 INFO L225 Difference]: With dead ends: 138 [2021-10-21 20:27:16,537 INFO L226 Difference]: Without dead ends: 134 [2021-10-21 20:27:16,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 785.5ms TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2021-10-21 20:27:16,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-21 20:27:16,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-21 20:27:16,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 80 states have (on average 1.2875) internal successors, (103), 99 states have internal predecessors, (103), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-21 20:27:16,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 140 transitions. [2021-10-21 20:27:16,543 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 140 transitions. Word has length 38 [2021-10-21 20:27:16,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:16,544 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 140 transitions. [2021-10-21 20:27:16,544 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 20:27:16,544 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 140 transitions. [2021-10-21 20:27:16,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-21 20:27:16,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:16,546 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 20:27:16,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:16,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:16,758 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 20:27:16,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:16,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1528032860, now seen corresponding path program 2 times [2021-10-21 20:27:16,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:16,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279871985] [2021-10-21 20:27:16,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:27:16,759 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:16,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:16,760 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:16,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-21 20:27:17,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 20:27:17,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:27:17,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 20:27:17,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:17,085 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 20:27:17,538 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 20:27:17,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:18,682 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 20:27:18,683 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:18,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279871985] [2021-10-21 20:27:18,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279871985] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:18,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:18,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2021-10-21 20:27:18,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955787027] [2021-10-21 20:27:18,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-21 20:27:18,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:18,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-21 20:27:18,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-21 20:27:18,686 INFO L87 Difference]: Start difference. First operand 134 states and 140 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 20:27:20,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:20,898 INFO L93 Difference]: Finished difference Result 133 states and 139 transitions. [2021-10-21 20:27:20,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 20:27:20,899 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 20:27:20,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:20,900 INFO L225 Difference]: With dead ends: 133 [2021-10-21 20:27:20,900 INFO L226 Difference]: Without dead ends: 133 [2021-10-21 20:27:20,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1068.3ms TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-10-21 20:27:20,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-21 20:27:20,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-10-21 20:27:20,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 80 states have (on average 1.275) internal successors, (102), 98 states have internal predecessors, (102), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-21 20:27:20,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 139 transitions. [2021-10-21 20:27:20,909 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 139 transitions. Word has length 46 [2021-10-21 20:27:20,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:20,910 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 139 transitions. [2021-10-21 20:27:20,910 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 20:27:20,911 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 139 transitions. [2021-10-21 20:27:20,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-21 20:27:20,914 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:20,914 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 20:27:20,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:21,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:21,127 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 20:27:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:21,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1472640772, now seen corresponding path program 1 times [2021-10-21 20:27:21,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:21,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166587168] [2021-10-21 20:27:21,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:21,127 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:21,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:21,128 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:21,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-21 20:27:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:21,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 20:27:21,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:21,780 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 20:27:21,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:22,858 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 20:27:22,859 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:22,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166587168] [2021-10-21 20:27:22,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166587168] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:27:22,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:27:22,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-10-21 20:27:22,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503978005] [2021-10-21 20:27:22,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-21 20:27:22,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:22,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-21 20:27:22,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2021-10-21 20:27:22,862 INFO L87 Difference]: Start difference. First operand 133 states and 139 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 20:27:23,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:23,546 INFO L93 Difference]: Finished difference Result 139 states and 145 transitions. [2021-10-21 20:27:23,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-21 20:27:23,547 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 20:27:23,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:23,549 INFO L225 Difference]: With dead ends: 139 [2021-10-21 20:27:23,549 INFO L226 Difference]: Without dead ends: 135 [2021-10-21 20:27:23,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 862.8ms TimeCoverageRelationStatistics Valid=250, Invalid=940, Unknown=0, NotChecked=0, Total=1190 [2021-10-21 20:27:23,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-21 20:27:23,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-10-21 20:27:23,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 100 states have internal predecessors, (104), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-21 20:27:23,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 141 transitions. [2021-10-21 20:27:23,556 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 141 transitions. Word has length 51 [2021-10-21 20:27:23,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:23,556 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 141 transitions. [2021-10-21 20:27:23,557 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 20:27:23,557 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 141 transitions. [2021-10-21 20:27:23,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-21 20:27:23,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:23,558 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 20:27:23,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:23,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:23,781 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 20:27:23,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:23,782 INFO L82 PathProgramCache]: Analyzing trace with hash 680412260, now seen corresponding path program 2 times [2021-10-21 20:27:23,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:23,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286889483] [2021-10-21 20:27:23,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:27:23,783 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:23,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:23,795 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:23,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-21 20:27:24,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 20:27:24,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:27:24,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:27:24,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:24,176 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 20:27:24,517 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 20:27:24,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:24,715 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 20:27:24,715 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:24,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286889483] [2021-10-21 20:27:24,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286889483] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:24,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:24,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 11 [2021-10-21 20:27:24,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797420679] [2021-10-21 20:27:24,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:27:24,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:24,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:27:24,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:27:24,717 INFO L87 Difference]: Start difference. First operand 135 states and 141 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 20:27:25,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:25,602 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2021-10-21 20:27:25,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:27:25,604 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 20:27:25,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:25,605 INFO L225 Difference]: With dead ends: 159 [2021-10-21 20:27:25,606 INFO L226 Difference]: Without dead ends: 159 [2021-10-21 20:27:25,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 85 SyntacticMatches, 10 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 207.8ms TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-21 20:27:25,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-21 20:27:25,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 133. [2021-10-21 20:27:25,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 98 states have internal predecessors, (102), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-21 20:27:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 139 transitions. [2021-10-21 20:27:25,613 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 139 transitions. Word has length 53 [2021-10-21 20:27:25,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:25,613 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 139 transitions. [2021-10-21 20:27:25,613 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 20:27:25,613 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 139 transitions. [2021-10-21 20:27:25,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-21 20:27:25,614 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:25,614 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 20:27:25,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:25,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:25,827 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 20:27:25,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:25,827 INFO L82 PathProgramCache]: Analyzing trace with hash 680412261, now seen corresponding path program 1 times [2021-10-21 20:27:25,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:25,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584592701] [2021-10-21 20:27:25,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:25,828 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:25,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:25,828 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:25,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-21 20:27:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:26,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 20:27:26,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:26,260 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 20:27:26,768 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 20:27:26,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:27,816 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 20:27:27,816 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:27,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584592701] [2021-10-21 20:27:27,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584592701] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:27,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:27,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2021-10-21 20:27:27,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549954480] [2021-10-21 20:27:27,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-21 20:27:27,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:27,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-21 20:27:27,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-21 20:27:27,818 INFO L87 Difference]: Start difference. First operand 133 states and 139 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 20:27:29,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:29,977 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2021-10-21 20:27:29,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 20:27:29,978 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 20:27:29,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:29,980 INFO L225 Difference]: With dead ends: 131 [2021-10-21 20:27:29,980 INFO L226 Difference]: Without dead ends: 131 [2021-10-21 20:27:29,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1031.5ms TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-10-21 20:27:29,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-21 20:27:29,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-10-21 20:27:29,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 82 states have (on average 1.2195121951219512) internal successors, (100), 96 states have internal predecessors, (100), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-21 20:27:29,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 137 transitions. [2021-10-21 20:27:29,988 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 137 transitions. Word has length 53 [2021-10-21 20:27:29,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:29,988 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 137 transitions. [2021-10-21 20:27:29,989 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 20:27:29,989 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 137 transitions. [2021-10-21 20:27:29,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-21 20:27:29,989 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:29,990 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] [2021-10-21 20:27:30,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:30,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:30,190 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 20:27:30,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:30,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1848313328, now seen corresponding path program 1 times [2021-10-21 20:27:30,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:30,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775303346] [2021-10-21 20:27:30,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:30,192 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:30,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:30,193 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:30,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-21 20:27:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:30,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 20:27:30,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:30,780 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 20:27:30,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:31,012 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 20:27:31,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:31,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775303346] [2021-10-21 20:27:31,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775303346] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:31,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:31,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-10-21 20:27:31,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343790974] [2021-10-21 20:27:31,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:27:31,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:31,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:27:31,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:27:31,014 INFO L87 Difference]: Start difference. First operand 131 states and 137 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 20:27:31,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:31,071 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2021-10-21 20:27:31,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:27:31,074 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2021-10-21 20:27:31,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:31,075 INFO L225 Difference]: With dead ends: 133 [2021-10-21 20:27:31,075 INFO L226 Difference]: Without dead ends: 131 [2021-10-21 20:27:31,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.9ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:27:31,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-21 20:27:31,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-10-21 20:27:31,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 82 states have (on average 1.2073170731707317) internal successors, (99), 95 states have internal predecessors, (99), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-21 20:27:31,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 136 transitions. [2021-10-21 20:27:31,080 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 136 transitions. Word has length 60 [2021-10-21 20:27:31,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:31,080 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 136 transitions. [2021-10-21 20:27:31,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 20:27:31,088 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 136 transitions. [2021-10-21 20:27:31,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-21 20:27:31,089 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:31,090 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:31,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:31,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:31,293 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 20:27:31,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:31,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1123996245, now seen corresponding path program 1 times [2021-10-21 20:27:31,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:31,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135847407] [2021-10-21 20:27:31,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:31,294 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:31,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:31,295 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:31,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-21 20:27:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:31,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:27:31,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:31,915 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 20:27:31,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:32,270 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 20:27:32,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:32,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135847407] [2021-10-21 20:27:32,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135847407] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:32,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:32,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 11 [2021-10-21 20:27:32,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998372381] [2021-10-21 20:27:32,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 20:27:32,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:32,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 20:27:32,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:27:32,273 INFO L87 Difference]: Start difference. First operand 131 states and 136 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-10-21 20:27:32,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:32,372 INFO L93 Difference]: Finished difference Result 135 states and 139 transitions. [2021-10-21 20:27:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:27:32,377 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2021-10-21 20:27:32,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:32,378 INFO L225 Difference]: With dead ends: 135 [2021-10-21 20:27:32,378 INFO L226 Difference]: Without dead ends: 131 [2021-10-21 20:27:32,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 82.4ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:27:32,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-21 20:27:32,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-10-21 20:27:32,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 82 states have (on average 1.1951219512195121) internal successors, (98), 94 states have internal predecessors, (98), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-21 20:27:32,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2021-10-21 20:27:32,389 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 65 [2021-10-21 20:27:32,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:32,389 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2021-10-21 20:27:32,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-10-21 20:27:32,390 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2021-10-21 20:27:32,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-21 20:27:32,391 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:32,391 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] [2021-10-21 20:27:32,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:32,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:32,605 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 20:27:32,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:32,606 INFO L82 PathProgramCache]: Analyzing trace with hash -638447166, now seen corresponding path program 1 times [2021-10-21 20:27:32,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:32,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426746494] [2021-10-21 20:27:32,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:32,607 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:32,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:32,608 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:32,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-21 20:27:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:33,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-21 20:27:33,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:33,156 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 20:27:33,669 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 20:27:33,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:34,140 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 20:27:34,141 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:34,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426746494] [2021-10-21 20:27:34,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426746494] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:34,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:34,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18, 17] imperfect sequences [] total 18 [2021-10-21 20:27:34,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939385592] [2021-10-21 20:27:34,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-21 20:27:34,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:34,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-21 20:27:34,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-10-21 20:27:34,144 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 19 states, 14 states have (on average 4.0) internal successors, (56), 12 states have internal predecessors, (56), 8 states have call successors, (20), 7 states have call predecessors, (20), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2021-10-21 20:27:35,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:35,344 INFO L93 Difference]: Finished difference Result 183 states and 200 transitions. [2021-10-21 20:27:35,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 20:27:35,345 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 4.0) internal successors, (56), 12 states have internal predecessors, (56), 8 states have call successors, (20), 7 states have call predecessors, (20), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 76 [2021-10-21 20:27:35,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:35,346 INFO L225 Difference]: With dead ends: 183 [2021-10-21 20:27:35,347 INFO L226 Difference]: Without dead ends: 183 [2021-10-21 20:27:35,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 118 SyntacticMatches, 16 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 489.7ms TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2021-10-21 20:27:35,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-10-21 20:27:35,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 157. [2021-10-21 20:27:35,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 100 states have (on average 1.19) internal successors, (119), 113 states have internal predecessors, (119), 22 states have call successors, (22), 22 states have call predecessors, (22), 23 states have return successors, (26), 21 states have call predecessors, (26), 21 states have call successors, (26) [2021-10-21 20:27:35,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2021-10-21 20:27:35,356 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 76 [2021-10-21 20:27:35,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:35,356 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2021-10-21 20:27:35,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 4.0) internal successors, (56), 12 states have internal predecessors, (56), 8 states have call successors, (20), 7 states have call predecessors, (20), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2021-10-21 20:27:35,356 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2021-10-21 20:27:35,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-21 20:27:35,357 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:35,358 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] [2021-10-21 20:27:35,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:35,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:35,569 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 20:27:35,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:35,569 INFO L82 PathProgramCache]: Analyzing trace with hash -638447165, now seen corresponding path program 1 times [2021-10-21 20:27:35,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:35,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288749556] [2021-10-21 20:27:35,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:35,570 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:35,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:35,572 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:35,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-21 20:27:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:36,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-21 20:27:36,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:36,283 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 20:27:37,034 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 20:27:37,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:39,411 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 20:27:39,411 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:39,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288749556] [2021-10-21 20:27:39,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288749556] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:39,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:39,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 18] imperfect sequences [] total 36 [2021-10-21 20:27:39,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823848984] [2021-10-21 20:27:39,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-21 20:27:39,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:39,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-21 20:27:39,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1229, Unknown=0, NotChecked=0, Total=1332 [2021-10-21 20:27:39,420 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand has 37 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 23 states have internal predecessors, (72), 14 states have call successors, (25), 12 states have call predecessors, (25), 6 states have return successors, (15), 8 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-21 20:27:43,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:43,244 INFO L93 Difference]: Finished difference Result 155 states and 163 transitions. [2021-10-21 20:27:43,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-21 20:27:43,245 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 23 states have internal predecessors, (72), 14 states have call successors, (25), 12 states have call predecessors, (25), 6 states have return successors, (15), 8 states have call predecessors, (15), 4 states have call successors, (15) Word has length 76 [2021-10-21 20:27:43,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:43,247 INFO L225 Difference]: With dead ends: 155 [2021-10-21 20:27:43,247 INFO L226 Difference]: Without dead ends: 155 [2021-10-21 20:27:43,248 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 113 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 2751.2ms TimeCoverageRelationStatistics Valid=151, Invalid=1741, Unknown=0, NotChecked=0, Total=1892 [2021-10-21 20:27:43,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-21 20:27:43,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-10-21 20:27:43,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 100 states have (on average 1.15) internal successors, (115), 111 states have internal predecessors, (115), 22 states have call successors, (22), 22 states have call predecessors, (22), 23 states have return successors, (26), 21 states have call predecessors, (26), 21 states have call successors, (26) [2021-10-21 20:27:43,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 163 transitions. [2021-10-21 20:27:43,255 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 163 transitions. Word has length 76 [2021-10-21 20:27:43,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:43,256 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 163 transitions. [2021-10-21 20:27:43,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 23 states have internal predecessors, (72), 14 states have call successors, (25), 12 states have call predecessors, (25), 6 states have return successors, (15), 8 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-21 20:27:43,256 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 163 transitions. [2021-10-21 20:27:43,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-21 20:27:43,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:43,257 INFO L512 BasicCegarLoop]: trace histogram [16, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:43,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:43,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:43,465 INFO L402 AbstractCegarLoop]: === Iteration 19 === 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 20:27:43,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:43,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1131008798, now seen corresponding path program 1 times [2021-10-21 20:27:43,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:43,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430098129] [2021-10-21 20:27:43,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:43,466 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:43,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:43,467 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:43,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-21 20:27:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:44,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:27:44,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 20:27:44,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:44,990 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 20:27:44,990 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:44,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430098129] [2021-10-21 20:27:44,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430098129] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:44,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:44,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 14 [2021-10-21 20:27:44,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616551540] [2021-10-21 20:27:44,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 20:27:44,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:44,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 20:27:44,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-10-21 20:27:44,992 INFO L87 Difference]: Start difference. First operand 155 states and 163 transitions. Second operand has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 states have internal predecessors, (45), 6 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-10-21 20:27:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:45,151 INFO L93 Difference]: Finished difference Result 159 states and 165 transitions. [2021-10-21 20:27:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:27:45,152 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 states have internal predecessors, (45), 6 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 83 [2021-10-21 20:27:45,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:45,153 INFO L225 Difference]: With dead ends: 159 [2021-10-21 20:27:45,153 INFO L226 Difference]: Without dead ends: 153 [2021-10-21 20:27:45,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 194.4ms TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-10-21 20:27:45,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-21 20:27:45,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-10-21 20:27:45,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 99 states have (on average 1.1313131313131313) internal successors, (112), 109 states have internal predecessors, (112), 22 states have call successors, (22), 22 states have call predecessors, (22), 22 states have return successors, (25), 21 states have call predecessors, (25), 21 states have call successors, (25) [2021-10-21 20:27:45,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 159 transitions. [2021-10-21 20:27:45,159 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 159 transitions. Word has length 83 [2021-10-21 20:27:45,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:45,160 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 159 transitions. [2021-10-21 20:27:45,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 states have internal predecessors, (45), 6 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-10-21 20:27:45,160 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 159 transitions. [2021-10-21 20:27:45,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-21 20:27:45,164 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:45,164 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] [2021-10-21 20:27:45,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:45,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:45,365 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 20:27:45,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:45,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1628283129, now seen corresponding path program 1 times [2021-10-21 20:27:45,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:45,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010038128] [2021-10-21 20:27:45,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:45,366 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:45,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:45,367 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:45,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-21 20:27:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:46,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-21 20:27:46,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:46,089 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 20:27:46,803 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 20:27:46,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:47,308 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 20:27:47,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:47,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010038128] [2021-10-21 20:27:47,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010038128] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:47,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:47,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22, 21] imperfect sequences [] total 22 [2021-10-21 20:27:47,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833971579] [2021-10-21 20:27:47,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-21 20:27:47,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:47,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-21 20:27:47,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2021-10-21 20:27:47,310 INFO L87 Difference]: Start difference. First operand 153 states and 159 transitions. Second operand has 23 states, 17 states have (on average 4.176470588235294) internal successors, (71), 14 states have internal predecessors, (71), 10 states have call successors, (24), 9 states have call predecessors, (24), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-21 20:27:48,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:48,944 INFO L93 Difference]: Finished difference Result 186 states and 202 transitions. [2021-10-21 20:27:48,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-21 20:27:48,945 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 4.176470588235294) internal successors, (71), 14 states have internal predecessors, (71), 10 states have call successors, (24), 9 states have call predecessors, (24), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 89 [2021-10-21 20:27:48,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:48,950 INFO L225 Difference]: With dead ends: 186 [2021-10-21 20:27:48,950 INFO L226 Difference]: Without dead ends: 186 [2021-10-21 20:27:48,950 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 138 SyntacticMatches, 18 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 693.2ms TimeCoverageRelationStatistics Valid=103, Invalid=827, Unknown=0, NotChecked=0, Total=930 [2021-10-21 20:27:48,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-10-21 20:27:48,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 159. [2021-10-21 20:27:48,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 112 states have internal predecessors, (116), 25 states have call successors, (25), 25 states have call predecessors, (25), 22 states have return successors, (28), 21 states have call predecessors, (28), 24 states have call successors, (28) [2021-10-21 20:27:48,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2021-10-21 20:27:48,969 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 89 [2021-10-21 20:27:48,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:48,970 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2021-10-21 20:27:48,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 4.176470588235294) internal successors, (71), 14 states have internal predecessors, (71), 10 states have call successors, (24), 9 states have call predecessors, (24), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-21 20:27:48,970 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2021-10-21 20:27:48,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-21 20:27:48,971 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:48,972 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] [2021-10-21 20:27:48,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:49,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:49,187 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 20:27:49,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:49,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1628283130, now seen corresponding path program 1 times [2021-10-21 20:27:49,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:49,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106225935] [2021-10-21 20:27:49,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:49,188 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:49,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:49,189 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:49,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-21 20:27:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:49,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-21 20:27:49,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:49,972 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 20:27:50,951 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 20:27:50,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:54,072 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 20:27:54,072 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:54,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106225935] [2021-10-21 20:27:54,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106225935] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:54,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:54,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23, 22] imperfect sequences [] total 44 [2021-10-21 20:27:54,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994175986] [2021-10-21 20:27:54,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-10-21 20:27:54,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:54,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-10-21 20:27:54,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1853, Unknown=0, NotChecked=0, Total=1980 [2021-10-21 20:27:54,075 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand has 45 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 27 states have internal predecessors, (90), 18 states have call successors, (31), 16 states have call predecessors, (31), 6 states have return successors, (17), 10 states have call predecessors, (17), 6 states have call successors, (17) [2021-10-21 20:27:59,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:59,275 INFO L93 Difference]: Finished difference Result 157 states and 166 transitions. [2021-10-21 20:27:59,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-21 20:27:59,276 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 27 states have internal predecessors, (90), 18 states have call successors, (31), 16 states have call predecessors, (31), 6 states have return successors, (17), 10 states have call predecessors, (17), 6 states have call successors, (17) Word has length 89 [2021-10-21 20:27:59,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:59,277 INFO L225 Difference]: With dead ends: 157 [2021-10-21 20:27:59,277 INFO L226 Difference]: Without dead ends: 157 [2021-10-21 20:27:59,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 129 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 3715.8ms TimeCoverageRelationStatistics Valid=189, Invalid=2673, Unknown=0, NotChecked=0, Total=2862 [2021-10-21 20:27:59,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-10-21 20:27:59,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-10-21 20:27:59,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 103 states have (on average 1.0970873786407767) internal successors, (113), 110 states have internal predecessors, (113), 25 states have call successors, (25), 25 states have call predecessors, (25), 22 states have return successors, (28), 21 states have call predecessors, (28), 24 states have call successors, (28) [2021-10-21 20:27:59,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 166 transitions. [2021-10-21 20:27:59,286 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 166 transitions. Word has length 89 [2021-10-21 20:27:59,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:59,286 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 166 transitions. [2021-10-21 20:27:59,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 27 states have internal predecessors, (90), 18 states have call successors, (31), 16 states have call predecessors, (31), 6 states have return successors, (17), 10 states have call predecessors, (17), 6 states have call successors, (17) [2021-10-21 20:27:59,287 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 166 transitions. [2021-10-21 20:27:59,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-10-21 20:27:59,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:59,288 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] [2021-10-21 20:27:59,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-21 20:27:59,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:59,503 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 20:27:59,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:59,503 INFO L82 PathProgramCache]: Analyzing trace with hash 822322196, now seen corresponding path program 1 times [2021-10-21 20:27:59,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:59,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326560336] [2021-10-21 20:27:59,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:59,504 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:59,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:59,505 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:59,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-21 20:28:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:00,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-21 20:28:00,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:28:01,801 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 20:28:01,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:28:02,802 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 20:28:02,802 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:28:02,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326560336] [2021-10-21 20:28:02,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326560336] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:28:02,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:28:02,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23, 21] imperfect sequences [] total 43 [2021-10-21 20:28:02,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935989269] [2021-10-21 20:28:02,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-10-21 20:28:02,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:28:02,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-10-21 20:28:02,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1726, Unknown=0, NotChecked=0, Total=1892 [2021-10-21 20:28:02,804 INFO L87 Difference]: Start difference. First operand 157 states and 166 transitions. Second operand has 44 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 26 states have internal predecessors, (100), 19 states have call successors, (35), 17 states have call predecessors, (35), 7 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) [2021-10-21 20:28:04,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:28:04,936 INFO L93 Difference]: Finished difference Result 156 states and 165 transitions. [2021-10-21 20:28:04,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-21 20:28:04,937 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 26 states have internal predecessors, (100), 19 states have call successors, (35), 17 states have call predecessors, (35), 7 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) Word has length 92 [2021-10-21 20:28:04,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:28:04,938 INFO L225 Difference]: With dead ends: 156 [2021-10-21 20:28:04,938 INFO L226 Difference]: Without dead ends: 156 [2021-10-21 20:28:04,939 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 136 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 1783.8ms TimeCoverageRelationStatistics Valid=230, Invalid=2422, Unknown=0, NotChecked=0, Total=2652 [2021-10-21 20:28:04,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-21 20:28:04,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-10-21 20:28:04,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 103 states have (on average 1.087378640776699) internal successors, (112), 109 states have internal predecessors, (112), 25 states have call successors, (25), 25 states have call predecessors, (25), 22 states have return successors, (28), 21 states have call predecessors, (28), 24 states have call successors, (28) [2021-10-21 20:28:04,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 165 transitions. [2021-10-21 20:28:04,945 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 165 transitions. Word has length 92 [2021-10-21 20:28:04,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:28:04,945 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 165 transitions. [2021-10-21 20:28:04,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 26 states have internal predecessors, (100), 19 states have call successors, (35), 17 states have call predecessors, (35), 7 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) [2021-10-21 20:28:04,946 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 165 transitions. [2021-10-21 20:28:04,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-21 20:28:04,947 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:04,947 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, 1, 1] [2021-10-21 20:28:04,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-10-21 20:28:05,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:28:05,174 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 20:28:05,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:05,174 INFO L82 PathProgramCache]: Analyzing trace with hash -692582595, now seen corresponding path program 1 times [2021-10-21 20:28:05,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:28:05,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792671820] [2021-10-21 20:28:05,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:05,175 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:28:05,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:28:05,176 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:28:05,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-21 20:28:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:06,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 121 conjunts are in the unsatisfiable core [2021-10-21 20:28:06,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:28:06,204 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 20:28:06,246 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-21 20:28:06,246 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 20:28:06,347 INFO L354 Elim1Store]: treesize reduction 68, result has 20.9 percent of original size [2021-10-21 20:28:06,347 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 38 treesize of output 40 [2021-10-21 20:28:06,482 INFO L354 Elim1Store]: treesize reduction 126, result has 18.2 percent of original size [2021-10-21 20:28:06,482 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 50 treesize of output 55 [2021-10-21 20:28:06,659 INFO L354 Elim1Store]: treesize reduction 198, result has 16.1 percent of original size [2021-10-21 20:28:06,660 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 62 treesize of output 70 [2021-10-21 20:28:06,860 INFO L354 Elim1Store]: treesize reduction 246, result has 15.2 percent of original size [2021-10-21 20:28:06,861 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 69 treesize of output 80 [2021-10-21 20:28:07,108 INFO L354 Elim1Store]: treesize reduction 332, result has 13.8 percent of original size [2021-10-21 20:28:07,109 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 80 treesize of output 94 [2021-10-21 20:28:07,465 INFO L354 Elim1Store]: treesize reduction 444, result has 12.3 percent of original size [2021-10-21 20:28:07,465 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 92 treesize of output 109 [2021-10-21 20:28:07,898 INFO L354 Elim1Store]: treesize reduction 540, result has 11.6 percent of original size [2021-10-21 20:28:07,899 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 20:28:08,432 INFO L354 Elim1Store]: treesize reduction 680, result has 10.5 percent of original size [2021-10-21 20:28:08,432 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 20:28:08,973 INFO L354 Elim1Store]: treesize reduction 828, result has 9.8 percent of original size [2021-10-21 20:28:08,973 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 126 treesize of output 152 [2021-10-21 20:28:09,698 INFO L354 Elim1Store]: treesize reduction 990, result has 9.2 percent of original size [2021-10-21 20:28:09,699 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 138 treesize of output 167 [2021-10-21 20:28:10,673 INFO L354 Elim1Store]: treesize reduction 1100, result has 8.9 percent of original size [2021-10-21 20:28:10,674 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 20:28:11,794 INFO L354 Elim1Store]: treesize reduction 1270, result has 8.4 percent of original size [2021-10-21 20:28:11,794 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 20:28:12,996 INFO L354 Elim1Store]: treesize reduction 1452, result has 7.9 percent of original size [2021-10-21 20:28:12,997 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 20:28:14,346 INFO L354 Elim1Store]: treesize reduction 1646, result has 7.5 percent of original size [2021-10-21 20:28:14,347 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 20:28:19,684 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 20:28:21,736 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 20:28:21,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:21,937 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 20:28:21,938 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 20:28:27,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:27,771 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 20:28:27,771 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 20:28:30,402 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 20:28:30,402 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 20:28:30,906 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 20:28:30,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:30:50,328 WARN L207 SmtUtils]: Spent 2.22 m on a formula simplification that was a NOOP. DAG size: 152 [2021-10-21 20:31:04,227 WARN L207 SmtUtils]: Spent 12.07 s on a formula simplification that was a NOOP. DAG size: 106 [2021-10-21 20:31:12,310 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 20:32:57,157 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 20:32:57,445 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 20:32:57,448 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 20:33:12,555 WARN L207 SmtUtils]: Spent 15.10 s on a formula simplification that was a NOOP. DAG size: 2072 [2021-10-21 20:38:41,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-21 20:38:41,935 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/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 20:38:41,936 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:38:41,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792671820] [2021-10-21 20:38:41,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/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 20:38:41,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1245443615] [2021-10-21 20:38:41,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:38:41,937 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-21 20:38:41,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/cvc4 [2021-10-21 20:38:41,938 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-21 20:38:41,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-21 20:38:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:38:44,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 117 conjunts are in the unsatisfiable core [2021-10-21 20:38:44,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:38:44,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/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 20:38:44,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249980143] [2021-10-21 20:38:44,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:38:44,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:38:44,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:38:44,147 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:38:44,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-21 20:38:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:38:45,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 123 conjunts are in the unsatisfiable core [2021-10-21 20:38:45,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:38:45,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/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 20:38:45,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:38:45,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-21 20:38:45,272 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-21 20:38:45,272 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-21 20:38:45,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:38:45,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-10-21 20:38:45,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-10-21 20:38:45,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-10-21 20:38:45,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-10-21 20:38:45,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-10-21 20:38:45,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-10-21 20:38:45,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-10-21 20:38:45,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-10-21 20:38:45,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-10-21 20:38:45,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-10-21 20:38:45,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-10-21 20:38:45,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-10-21 20:38:45,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-10-21 20:38:45,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-10-21 20:38:45,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-10-21 20:38:45,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-10-21 20:38:45,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-10-21 20:38:45,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-10-21 20:38:45,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-10-21 20:38:45,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-10-21 20:38:45,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-10-21 20:38:45,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-10-21 20:38:45,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-10-21 20:38:45,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-10-21 20:38:45,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-10-21 20:38:45,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-10-21 20:38:45,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-10-21 20:38:45,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-10-21 20:38:45,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-10-21 20:38:45,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-10-21 20:38:45,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-10-21 20:38:45,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-10-21 20:38:45,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-10-21 20:38:45,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-10-21 20:38:45,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-10-21 20:38:45,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-10-21 20:38:45,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-10-21 20:38:45,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-10-21 20:38:45,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-10-21 20:38:45,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-10-21 20:38:45,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-10-21 20:38:45,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-10-21 20:38:45,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:38:45,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:38:45,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:38:45,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:38:45,289 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:38:45,289 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:38:45,289 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 20:38:45,289 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-10-21 20:38:45,289 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-10-21 20:38:45,289 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-10-21 20:38:45,290 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-10-21 20:38:45,290 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-10-21 20:38:45,290 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-10-21 20:38:45,290 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-10-21 20:38:45,290 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-10-21 20:38:45,290 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:38:45,291 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:38:45,291 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:38:45,291 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:38:45,291 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:38:45,291 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-10-21 20:38:45,291 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-10-21 20:38:45,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-10-21 20:38:45,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-10-21 20:38:45,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-10-21 20:38:45,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-10-21 20:38:45,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-10-21 20:38:45,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-10-21 20:38:45,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-21 20:38:45,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-10-21 20:38:45,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-21 20:38:45,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e8370-9e3a-4000-a1d0-8cab89075b4f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:38:45,913 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:38:45,919 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-10-21 20:38:45,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:38:45 BoogieIcfgContainer [2021-10-21 20:38:45,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:38:45,943 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:38:45,944 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:38:45,944 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:38:45,944 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:27:04" (3/4) ... [2021-10-21 20:38:45,953 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:38:45,953 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:38:45,958 INFO L168 Benchmark]: Toolchain (without parser) took 703454.52 ms. Allocated memory was 75.5 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 60.2 MB in the beginning and 1.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 206.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:38:45,959 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 75.5 MB. Free memory was 57.6 MB in the beginning and 57.6 MB in the end (delta: 63.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:38:45,959 INFO L168 Benchmark]: CACSL2BoogieTranslator took 709.59 ms. Allocated memory is still 75.5 MB. Free memory was 60.0 MB in the beginning and 42.0 MB in the end (delta: 18.0 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:38:45,959 INFO L168 Benchmark]: Boogie Preprocessor took 130.23 ms. Allocated memory is still 75.5 MB. Free memory was 41.8 MB in the beginning and 37.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:38:45,960 INFO L168 Benchmark]: RCFGBuilder took 1505.10 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 37.2 MB in the beginning and 58.1 MB in the end (delta: -20.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:38:45,961 INFO L168 Benchmark]: TraceAbstraction took 701094.64 ms. Allocated memory was 92.3 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 57.7 MB in the beginning and 1.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 187.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:38:45,961 INFO L168 Benchmark]: Witness Printer took 9.61 ms. Allocated memory is still 1.4 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:38:45,964 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 75.5 MB. Free memory was 57.6 MB in the beginning and 57.6 MB in the end (delta: 63.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 709.59 ms. Allocated memory is still 75.5 MB. Free memory was 60.0 MB in the beginning and 42.0 MB in the end (delta: 18.0 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 130.23 ms. Allocated memory is still 75.5 MB. Free memory was 41.8 MB in the beginning and 37.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1505.10 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 37.2 MB in the beginning and 58.1 MB in the end (delta: -20.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 701094.64 ms. Allocated memory was 92.3 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 57.7 MB in the beginning and 1.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 187.6 MB. Max. memory is 16.1 GB. * Witness Printer took 9.61 ms. Allocated memory is still 1.4 GB. Free memory is still 1.1 GB. 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) }; [L770] CALL entry_point() [L764] struct ldv_kobject *kobj; [L765] 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; [L765] RET, EXPR ldv_kobject_create() [L765] kobj = ldv_kobject_create() [L766] CALL f_22_put(kobj) [L761] 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: 769]: 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 49 procedures, 341 locations, 71 error locations. Started 1 CEGAR loops. OverallTime: 700995.6ms, OverallIterations: 23, TraceHistogramMax: 16, EmptinessCheckTime: 45.6ms, AutomataDifference: 23398.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2409 SDtfs, 1258 SDslu, 19332 SDs, 0 SdLazy, 10820 SolverSat, 352 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17013.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2299 GetRequests, 1821 SyntacticMatches, 73 SemanticMatches, 405 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2296 ImplicationChecksByTransitivity, 14553.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=159occurred in iteration=20, InterpolantAutomatonStates: 281, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 290.1ms AutomataMinimizationTime, 22 MinimizatonAttempts, 134 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 341.2ms SsaConstructionTime, 1648.9ms SatisfiabilityAnalysisTime, 23131.8ms InterpolantComputationTime, 1124 NumberOfCodeBlocks, 1088 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2204 ConstructedInterpolants, 306 QuantifiedInterpolants, 9559 SizeOfPredicates, 106 NumberOfNonLiveVariables, 4858 ConjunctsInSsa, 351 ConjunctsInUnsatCore, 44 InterpolantComputations, 38 PerfectInterpolantSequences, 2984/3242 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...