./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G --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 8767e0bad2c10bf5e26ce466e806335c672949ef870a6e01ac396a8c6ce00fcd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:44:04,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:44:04,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:44:04,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:44:04,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:44:04,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:44:04,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:44:04,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:44:04,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:44:04,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:44:04,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:44:04,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:44:04,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:44:04,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:44:04,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:44:04,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:44:04,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:44:04,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:44:04,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:44:04,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:44:04,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:44:04,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:44:04,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:44:04,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:44:04,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:44:04,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:44:04,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:44:04,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:44:04,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:44:04,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:44:04,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:44:04,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:44:04,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:44:04,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:44:04,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:44:04,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:44:04,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:44:04,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:44:04,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:44:04,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:44:04,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:44:04,990 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-23 12:44:05,037 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:44:05,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:44:05,038 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:44:05,038 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:44:05,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:44:05,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:44:05,048 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:44:05,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:44:05,049 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:44:05,049 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 12:44:05,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:44:05,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:44:05,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:44:05,051 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 12:44:05,051 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 12:44:05,051 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 12:44:05,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:44:05,051 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 12:44:05,052 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:44:05,052 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:44:05,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:44:05,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:44:05,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:44:05,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:44:05,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:44:05,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:44:05,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:44:05,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:44:05,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:44:05,055 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_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8767e0bad2c10bf5e26ce466e806335c672949ef870a6e01ac396a8c6ce00fcd [2021-11-23 12:44:05,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:44:05,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:44:05,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:44:05,442 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:44:05,443 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:44:05,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2021-11-23 12:44:05,535 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/data/6b1884d59/4f90808f2a014bad9e7110be26eece7e/FLAGba0840897 [2021-11-23 12:44:06,086 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:44:06,086 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2021-11-23 12:44:06,117 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/data/6b1884d59/4f90808f2a014bad9e7110be26eece7e/FLAGba0840897 [2021-11-23 12:44:06,392 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/data/6b1884d59/4f90808f2a014bad9e7110be26eece7e [2021-11-23 12:44:06,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:44:06,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:44:06,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:44:06,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:44:06,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:44:06,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:44:06" (1/1) ... [2021-11-23 12:44:06,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@647fc46f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:06, skipping insertion in model container [2021-11-23 12:44:06,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:44:06" (1/1) ... [2021-11-23 12:44:06,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:44:06,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:44:07,013 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:44:07,043 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-23 12:44:07,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6c453b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:07, skipping insertion in model container [2021-11-23 12:44:07,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:44:07,046 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 12:44:07,049 INFO L158 Benchmark]: Toolchain (without parser) took 645.27ms. Allocated memory is still 109.1MB. Free memory was 67.8MB in the beginning and 78.6MB in the end (delta: -10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 12:44:07,050 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 109.1MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:44:07,052 INFO L158 Benchmark]: CACSL2BoogieTranslator took 640.45ms. Allocated memory is still 109.1MB. Free memory was 67.5MB in the beginning and 78.6MB in the end (delta: -11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 12:44:07,055 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 109.1MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 640.45ms. Allocated memory is still 109.1MB. Free memory was 67.5MB in the beginning and 78.6MB in the end (delta: -11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G --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 8767e0bad2c10bf5e26ce466e806335c672949ef870a6e01ac396a8c6ce00fcd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:44:09,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:44:09,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:44:09,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:44:09,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:44:09,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:44:09,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:44:09,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:44:09,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:44:09,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:44:09,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:44:09,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:44:09,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:44:09,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:44:09,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:44:09,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:44:09,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:44:09,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:44:09,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:44:09,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:44:09,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:44:09,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:44:09,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:44:09,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:44:09,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:44:09,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:44:09,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:44:09,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:44:09,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:44:09,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:44:09,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:44:09,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:44:09,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:44:09,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:44:09,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:44:09,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:44:09,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:44:09,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:44:09,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:44:09,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:44:09,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:44:09,535 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-23 12:44:09,577 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:44:09,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:44:09,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:44:09,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:44:09,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:44:09,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:44:09,583 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:44:09,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:44:09,583 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:44:09,584 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 12:44:09,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:44:09,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:44:09,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:44:09,585 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 12:44:09,586 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 12:44:09,586 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 12:44:09,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:44:09,586 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 12:44:09,587 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 12:44:09,587 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 12:44:09,587 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:44:09,587 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:44:09,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:44:09,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:44:09,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:44:09,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:44:09,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:44:09,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:44:09,589 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 12:44:09,589 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 12:44:09,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:44:09,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 12:44:09,590 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_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8767e0bad2c10bf5e26ce466e806335c672949ef870a6e01ac396a8c6ce00fcd [2021-11-23 12:44:09,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:44:10,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:44:10,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:44:10,010 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:44:10,011 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:44:10,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2021-11-23 12:44:10,110 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/data/3fb270263/deadb003604847e0a67bd552c0850186/FLAGfd3c6c89f [2021-11-23 12:44:10,974 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:44:10,975 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2021-11-23 12:44:10,996 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/data/3fb270263/deadb003604847e0a67bd552c0850186/FLAGfd3c6c89f [2021-11-23 12:44:11,178 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/data/3fb270263/deadb003604847e0a67bd552c0850186 [2021-11-23 12:44:11,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:44:11,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:44:11,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:44:11,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:44:11,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:44:11,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:44:11" (1/1) ... [2021-11-23 12:44:11,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55076dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:11, skipping insertion in model container [2021-11-23 12:44:11,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:44:11" (1/1) ... [2021-11-23 12:44:11,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:44:11,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:44:11,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:44:11,889 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 12:44:11,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:44:12,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:44:12,030 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:44:12,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:44:12,185 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:44:12,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:12 WrapperNode [2021-11-23 12:44:12,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:44:12,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:44:12,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:44:12,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:44:12,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:12" (1/1) ... [2021-11-23 12:44:12,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:12" (1/1) ... [2021-11-23 12:44:12,259 INFO L137 Inliner]: procedures = 169, calls = 77, calls flagged for inlining = 33, calls inlined = 8, statements flattened = 65 [2021-11-23 12:44:12,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:44:12,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:44:12,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:44:12,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:44:12,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:12" (1/1) ... [2021-11-23 12:44:12,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:12" (1/1) ... [2021-11-23 12:44:12,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:12" (1/1) ... [2021-11-23 12:44:12,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:12" (1/1) ... [2021-11-23 12:44:12,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:12" (1/1) ... [2021-11-23 12:44:12,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:12" (1/1) ... [2021-11-23 12:44:12,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:12" (1/1) ... [2021-11-23 12:44:12,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:44:12,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:44:12,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:44:12,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:44:12,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:12" (1/1) ... [2021-11-23 12:44:12,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:44:12,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:12,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:12,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:44:12,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 12:44:12,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:44:12,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 12:44:12,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:44:12,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 12:44:12,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:44:12,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:44:12,525 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:44:12,527 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:44:12,700 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:44:12,706 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:44:12,706 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 12:44:12,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:44:12 BoogieIcfgContainer [2021-11-23 12:44:12,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:44:12,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:44:12,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:44:12,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:44:12,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:44:11" (1/3) ... [2021-11-23 12:44:12,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a36e46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:44:12, skipping insertion in model container [2021-11-23 12:44:12,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:12" (2/3) ... [2021-11-23 12:44:12,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a36e46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:44:12, skipping insertion in model container [2021-11-23 12:44:12,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:44:12" (3/3) ... [2021-11-23 12:44:12,715 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_3.i [2021-11-23 12:44:12,720 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:44:12,720 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-23 12:44:12,807 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:44:12,814 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:44:12,814 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-23 12:44:12,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 21 states have (on average 1.619047619047619) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:12,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 12:44:12,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:12,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:12,835 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-23 12:44:12,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:12,841 INFO L85 PathProgramCache]: Analyzing trace with hash 119408775, now seen corresponding path program 1 times [2021-11-23 12:44:12,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:44:12,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447366117] [2021-11-23 12:44:12,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:12,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:44:12,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:44:12,872 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:44:12,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 12:44:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:12,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:44:13,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:13,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:13,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:13,135 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:44:13,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447366117] [2021-11-23 12:44:13,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447366117] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:13,138 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:13,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 12:44:13,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210479087] [2021-11-23 12:44:13,140 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:13,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:13,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:44:13,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:13,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:13,188 INFO L87 Difference]: Start difference. First operand has 30 states, 21 states have (on average 1.619047619047619) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:13,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:13,287 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2021-11-23 12:44:13,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:44:13,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 12:44:13,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:13,301 INFO L225 Difference]: With dead ends: 57 [2021-11-23 12:44:13,301 INFO L226 Difference]: Without dead ends: 53 [2021-11-23 12:44:13,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:13,312 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 57 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:13,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 93 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:13,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-23 12:44:13,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 30. [2021-11-23 12:44:13,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:13,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-11-23 12:44:13,368 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 8 [2021-11-23 12:44:13,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:13,369 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-11-23 12:44:13,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:13,371 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-11-23 12:44:13,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 12:44:13,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:13,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:13,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:13,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:44:13,584 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-23 12:44:13,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:13,585 INFO L85 PathProgramCache]: Analyzing trace with hash 119443416, now seen corresponding path program 1 times [2021-11-23 12:44:13,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:44:13,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333529060] [2021-11-23 12:44:13,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:13,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:44:13,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:44:13,587 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:44:13,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 12:44:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:13,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:44:13,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:13,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:13,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:13,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:13,715 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:44:13,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333529060] [2021-11-23 12:44:13,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333529060] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:13,716 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:13,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 12:44:13,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363723727] [2021-11-23 12:44:13,716 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:13,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:13,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:44:13,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:13,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:13,719 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:13,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:13,744 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-11-23 12:44:13,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:13,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 12:44:13,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:13,746 INFO L225 Difference]: With dead ends: 29 [2021-11-23 12:44:13,746 INFO L226 Difference]: Without dead ends: 29 [2021-11-23 12:44:13,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:13,748 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 50 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:13,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 30 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:13,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-23 12:44:13,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-23 12:44:13,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:13,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-11-23 12:44:13,754 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 8 [2021-11-23 12:44:13,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:13,754 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-11-23 12:44:13,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:13,755 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-11-23 12:44:13,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 12:44:13,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:13,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:13,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:13,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:44:13,966 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-23 12:44:13,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:13,967 INFO L85 PathProgramCache]: Analyzing trace with hash 176667077, now seen corresponding path program 1 times [2021-11-23 12:44:13,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:44:13,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327809031] [2021-11-23 12:44:13,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:13,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:44:13,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:44:13,969 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:44:13,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 12:44:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:14,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:44:14,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:14,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:14,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:14,185 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:44:14,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327809031] [2021-11-23 12:44:14,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327809031] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:14,186 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:14,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-23 12:44:14,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752299826] [2021-11-23 12:44:14,187 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:14,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:14,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:44:14,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:14,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:14,189 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:14,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:14,246 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2021-11-23 12:44:14,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:14,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 12:44:14,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:14,249 INFO L225 Difference]: With dead ends: 37 [2021-11-23 12:44:14,250 INFO L226 Difference]: Without dead ends: 37 [2021-11-23 12:44:14,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:14,256 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 44 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:14,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 25 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:14,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-23 12:44:14,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2021-11-23 12:44:14,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.5) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:14,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2021-11-23 12:44:14,270 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 8 [2021-11-23 12:44:14,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:14,271 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2021-11-23 12:44:14,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:14,271 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2021-11-23 12:44:14,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 12:44:14,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:14,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:14,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:14,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:44:14,485 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-23 12:44:14,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:14,485 INFO L85 PathProgramCache]: Analyzing trace with hash 176667078, now seen corresponding path program 1 times [2021-11-23 12:44:14,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:44:14,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396617996] [2021-11-23 12:44:14,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:14,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:44:14,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:44:14,487 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:44:14,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 12:44:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:14,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:44:14,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:14,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:14,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:14,813 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:44:14,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396617996] [2021-11-23 12:44:14,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396617996] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:14,813 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:14,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-23 12:44:14,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732746857] [2021-11-23 12:44:14,814 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:14,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:14,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:44:14,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:14,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:14,815 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:14,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:14,905 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2021-11-23 12:44:14,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:14,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 12:44:14,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:14,907 INFO L225 Difference]: With dead ends: 58 [2021-11-23 12:44:14,907 INFO L226 Difference]: Without dead ends: 58 [2021-11-23 12:44:14,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:14,908 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 24 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:14,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 80 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:44:14,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-23 12:44:14,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2021-11-23 12:44:14,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.5116279069767442) internal successors, (65), 49 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:14,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 65 transitions. [2021-11-23 12:44:14,925 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 65 transitions. Word has length 8 [2021-11-23 12:44:14,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:14,925 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 65 transitions. [2021-11-23 12:44:14,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:14,926 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 65 transitions. [2021-11-23 12:44:14,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 12:44:14,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:14,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:14,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:15,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:44:15,139 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-23 12:44:15,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:15,140 INFO L85 PathProgramCache]: Analyzing trace with hash -592221333, now seen corresponding path program 1 times [2021-11-23 12:44:15,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:44:15,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682630409] [2021-11-23 12:44:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:15,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:44:15,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:44:15,147 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:44:15,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 12:44:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:15,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:44:15,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:15,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:15,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:15,398 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:44:15,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682630409] [2021-11-23 12:44:15,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682630409] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:15,398 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:15,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-23 12:44:15,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870408092] [2021-11-23 12:44:15,399 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:15,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:44:15,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:44:15,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:44:15,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:44:15,400 INFO L87 Difference]: Start difference. First operand 50 states and 65 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:15,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:15,533 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2021-11-23 12:44:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 12:44:15,535 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 12:44:15,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:15,536 INFO L225 Difference]: With dead ends: 56 [2021-11-23 12:44:15,536 INFO L226 Difference]: Without dead ends: 56 [2021-11-23 12:44:15,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:44:15,537 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 90 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:15,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 67 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:44:15,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-23 12:44:15,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2021-11-23 12:44:15,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 48 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:15,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2021-11-23 12:44:15,545 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 9 [2021-11-23 12:44:15,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:15,545 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2021-11-23 12:44:15,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:15,546 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2021-11-23 12:44:15,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 12:44:15,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:15,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:15,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:15,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:44:15,764 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-23 12:44:15,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:15,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1178992070, now seen corresponding path program 1 times [2021-11-23 12:44:15,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:44:15,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295259709] [2021-11-23 12:44:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:15,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:44:15,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:44:15,767 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:44:15,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 12:44:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:15,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:44:15,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:15,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 12:44:15,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:15,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:15,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:15,987 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:44:15,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295259709] [2021-11-23 12:44:15,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295259709] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:15,988 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:15,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 12:44:15,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691723262] [2021-11-23 12:44:15,988 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:15,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:15,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:44:15,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:15,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:15,993 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:16,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:16,091 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2021-11-23 12:44:16,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:16,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 12:44:16,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:16,093 INFO L225 Difference]: With dead ends: 55 [2021-11-23 12:44:16,093 INFO L226 Difference]: Without dead ends: 55 [2021-11-23 12:44:16,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:16,094 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 38 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:16,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 64 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:44:16,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-23 12:44:16,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2021-11-23 12:44:16,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 43 states have (on average 1.441860465116279) internal successors, (62), 48 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:16,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2021-11-23 12:44:16,107 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 10 [2021-11-23 12:44:16,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:16,108 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2021-11-23 12:44:16,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:16,108 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2021-11-23 12:44:16,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 12:44:16,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:16,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:16,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:16,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:44:16,324 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-23 12:44:16,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:16,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1178944307, now seen corresponding path program 1 times [2021-11-23 12:44:16,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:44:16,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350794826] [2021-11-23 12:44:16,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:16,325 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:44:16,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:44:16,325 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:44:16,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 12:44:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:16,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 12:44:16,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:16,439 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 12:44:16,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-11-23 12:44:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:16,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:16,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:16,576 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:44:16,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350794826] [2021-11-23 12:44:16,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350794826] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:16,577 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:16,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-11-23 12:44:16,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863591779] [2021-11-23 12:44:16,578 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:16,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:44:16,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:44:16,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:44:16,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:44:16,579 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:16,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:16,654 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2021-11-23 12:44:16,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:44:16,655 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 12:44:16,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:16,656 INFO L225 Difference]: With dead ends: 52 [2021-11-23 12:44:16,656 INFO L226 Difference]: Without dead ends: 52 [2021-11-23 12:44:16,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:44:16,657 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 63 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:16,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 33 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:44:16,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-23 12:44:16,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2021-11-23 12:44:16,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 47 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:16,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2021-11-23 12:44:16,663 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 10 [2021-11-23 12:44:16,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:16,663 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2021-11-23 12:44:16,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:16,664 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2021-11-23 12:44:16,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 12:44:16,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:16,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:16,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:16,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:44:16,882 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-23 12:44:16,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:16,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1178944306, now seen corresponding path program 1 times [2021-11-23 12:44:16,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:44:16,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210528483] [2021-11-23 12:44:16,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:16,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:44:16,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:44:16,885 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:44:16,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 12:44:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:16,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 12:44:16,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:17,074 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 12:44:17,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-23 12:44:17,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:17,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:19,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:19,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:44:19,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210528483] [2021-11-23 12:44:19,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210528483] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:19,646 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:19,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-23 12:44:19,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932721379] [2021-11-23 12:44:19,646 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:19,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:44:19,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:44:19,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:44:19,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-11-23 12:44:19,648 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:19,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:19,822 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2021-11-23 12:44:19,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:44:19,823 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 12:44:19,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:19,823 INFO L225 Difference]: With dead ends: 50 [2021-11-23 12:44:19,824 INFO L226 Difference]: Without dead ends: 50 [2021-11-23 12:44:19,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=26, Invalid=45, Unknown=1, NotChecked=0, Total=72 [2021-11-23 12:44:19,825 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 63 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:19,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 37 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2021-11-23 12:44:19,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-23 12:44:19,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-11-23 12:44:19,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 40 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:19,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2021-11-23 12:44:19,830 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 10 [2021-11-23 12:44:19,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:19,830 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2021-11-23 12:44:19,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:19,831 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2021-11-23 12:44:19,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 12:44:19,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:19,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:19,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:20,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:44:20,033 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-23 12:44:20,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:20,033 INFO L85 PathProgramCache]: Analyzing trace with hash -2021630074, now seen corresponding path program 1 times [2021-11-23 12:44:20,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:44:20,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815402683] [2021-11-23 12:44:20,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:20,034 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:44:20,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:44:20,035 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:44:20,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 12:44:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:20,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 12:44:20,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:20,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:20,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:20,164 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:44:20,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815402683] [2021-11-23 12:44:20,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815402683] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:20,165 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:20,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 12:44:20,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349459331] [2021-11-23 12:44:20,165 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:20,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:44:20,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:44:20,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:20,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:20,168 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:20,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:20,255 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2021-11-23 12:44:20,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:20,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 12:44:20,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:20,256 INFO L225 Difference]: With dead ends: 49 [2021-11-23 12:44:20,256 INFO L226 Difference]: Without dead ends: 41 [2021-11-23 12:44:20,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:20,257 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:20,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 53 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:44:20,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-23 12:44:20,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-11-23 12:44:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2021-11-23 12:44:20,265 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 10 [2021-11-23 12:44:20,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:20,265 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2021-11-23 12:44:20,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:20,266 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2021-11-23 12:44:20,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 12:44:20,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:20,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:20,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:20,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:44:20,468 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-23 12:44:20,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:20,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1988338696, now seen corresponding path program 1 times [2021-11-23 12:44:20,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:44:20,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449280390] [2021-11-23 12:44:20,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:20,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:44:20,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:44:20,470 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:44:20,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 12:44:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:20,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:44:20,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:20,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:20,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:20,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:44:20,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449280390] [2021-11-23 12:44:20,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449280390] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:20,647 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:20,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 12:44:20,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306964011] [2021-11-23 12:44:20,648 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:20,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:20,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:44:20,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:20,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:20,649 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:20,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:20,691 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-11-23 12:44:20,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:20,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 12:44:20,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:20,693 INFO L225 Difference]: With dead ends: 29 [2021-11-23 12:44:20,693 INFO L226 Difference]: Without dead ends: 27 [2021-11-23 12:44:20,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:20,694 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:20,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 67 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:20,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-23 12:44:20,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-23 12:44:20,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.25) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:20,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-11-23 12:44:20,698 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 10 [2021-11-23 12:44:20,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:20,699 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-11-23 12:44:20,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:20,699 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-11-23 12:44:20,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 12:44:20,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:20,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:20,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:20,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:44:20,911 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-23 12:44:20,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:20,911 INFO L85 PathProgramCache]: Analyzing trace with hash 889860049, now seen corresponding path program 1 times [2021-11-23 12:44:20,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:44:20,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029570709] [2021-11-23 12:44:20,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:20,912 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:44:20,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:44:20,913 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:44:20,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 12:44:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:20,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:44:20,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:21,050 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 12:44:21,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-23 12:44:21,385 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-11-23 12:44:21,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 38 treesize of output 41 [2021-11-23 12:44:21,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:21,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:21,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:21,623 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:44:21,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029570709] [2021-11-23 12:44:21,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029570709] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:21,623 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:21,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-23 12:44:21,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501238883] [2021-11-23 12:44:21,623 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:21,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:44:21,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:44:21,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:44:21,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:44:21,625 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:21,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:21,652 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-11-23 12:44:21,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:44:21,652 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 12:44:21,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:21,653 INFO L225 Difference]: With dead ends: 28 [2021-11-23 12:44:21,653 INFO L226 Difference]: Without dead ends: 28 [2021-11-23 12:44:21,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:44:21,654 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:21,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 41 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2021-11-23 12:44:21,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-23 12:44:21,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-23 12:44:21,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.28) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:21,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-11-23 12:44:21,657 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 13 [2021-11-23 12:44:21,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:21,660 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-11-23 12:44:21,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:21,660 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-11-23 12:44:21,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 12:44:21,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:21,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:21,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:21,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:44:21,874 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-23 12:44:21,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:21,874 INFO L85 PathProgramCache]: Analyzing trace with hash 889860050, now seen corresponding path program 1 times [2021-11-23 12:44:21,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:44:21,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608579117] [2021-11-23 12:44:21,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:21,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:44:21,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:44:21,875 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:44:21,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 12:44:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:21,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:44:21,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:22,040 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 12:44:22,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-23 12:44:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:22,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:24,640 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:44:24,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608579117] [2021-11-23 12:44:24,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608579117] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:24,641 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:24,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-11-23 12:44:24,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088871966] [2021-11-23 12:44:24,641 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:24,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:44:24,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:44:24,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:44:24,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-23 12:44:24,642 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:24,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:24,677 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-11-23 12:44:24,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:24,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 12:44:24,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:24,678 INFO L225 Difference]: With dead ends: 27 [2021-11-23 12:44:24,678 INFO L226 Difference]: Without dead ends: 27 [2021-11-23 12:44:24,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-23 12:44:24,680 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 13 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:24,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 33 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 7 Unchecked, 0.0s Time] [2021-11-23 12:44:24,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-23 12:44:24,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-11-23 12:44:24,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:24,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-11-23 12:44:24,683 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 13 [2021-11-23 12:44:24,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:24,684 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-11-23 12:44:24,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:24,684 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-11-23 12:44:24,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 12:44:24,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:24,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:24,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:24,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:44:24,896 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-23 12:44:24,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:24,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1815853795, now seen corresponding path program 1 times [2021-11-23 12:44:24,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:44:24,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801843815] [2021-11-23 12:44:24,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:24,897 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:44:24,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:44:24,899 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:44:24,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 12:44:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:24,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:44:24,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:25,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:25,081 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:44:25,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801843815] [2021-11-23 12:44:25,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801843815] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:25,082 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:25,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 12:44:25,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438543806] [2021-11-23 12:44:25,082 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:25,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:44:25,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:44:25,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:44:25,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:44:25,083 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:25,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:25,155 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-11-23 12:44:25,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:44:25,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 12:44:25,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:25,156 INFO L225 Difference]: With dead ends: 31 [2021-11-23 12:44:25,156 INFO L226 Difference]: Without dead ends: 31 [2021-11-23 12:44:25,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:44:25,157 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 27 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:25,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 107 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:25,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-23 12:44:25,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-11-23 12:44:25,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:25,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-11-23 12:44:25,160 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2021-11-23 12:44:25,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:25,160 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-11-23 12:44:25,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:25,160 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-11-23 12:44:25,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 12:44:25,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:25,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:25,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:25,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:44:25,361 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-23 12:44:25,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:25,362 INFO L85 PathProgramCache]: Analyzing trace with hash 457015954, now seen corresponding path program 1 times [2021-11-23 12:44:25,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:44:25,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783061431] [2021-11-23 12:44:25,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:25,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:44:25,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:44:25,364 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:44:25,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 12:44:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:25,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 12:44:25,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:25,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:25,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:29,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:29,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:44:29,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783061431] [2021-11-23 12:44:29,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783061431] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:29,938 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:29,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 12:44:29,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389852767] [2021-11-23 12:44:29,938 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:29,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:44:29,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:44:29,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:44:29,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=50, Unknown=2, NotChecked=0, Total=72 [2021-11-23 12:44:29,940 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:30,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:30,053 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-11-23 12:44:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:44:30,053 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 12:44:30,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:30,054 INFO L225 Difference]: With dead ends: 26 [2021-11-23 12:44:30,054 INFO L226 Difference]: Without dead ends: 18 [2021-11-23 12:44:30,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=33, Invalid=75, Unknown=2, NotChecked=0, Total=110 [2021-11-23 12:44:30,055 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 52 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:30,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 51 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 11 Unchecked, 0.1s Time] [2021-11-23 12:44:30,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-23 12:44:30,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-23 12:44:30,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:30,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-11-23 12:44:30,057 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2021-11-23 12:44:30,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:30,058 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-11-23 12:44:30,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:30,058 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-11-23 12:44:30,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 12:44:30,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:30,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:30,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:30,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:44:30,266 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-23 12:44:30,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:30,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2049466265, now seen corresponding path program 1 times [2021-11-23 12:44:30,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:44:30,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776820311] [2021-11-23 12:44:30,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:30,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:44:30,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:44:30,268 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:44:30,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 12:44:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:30,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:44:30,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:30,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:30,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:30,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:30,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:44:30,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776820311] [2021-11-23 12:44:30,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776820311] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:30,407 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:30,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 12:44:30,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180968738] [2021-11-23 12:44:30,408 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:30,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:30,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:44:30,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:30,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:30,409 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:30,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:30,425 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2021-11-23 12:44:30,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:30,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-23 12:44:30,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:30,427 INFO L225 Difference]: With dead ends: 18 [2021-11-23 12:44:30,427 INFO L226 Difference]: Without dead ends: 18 [2021-11-23 12:44:30,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:30,428 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:30,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:30,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-23 12:44:30,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-23 12:44:30,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:30,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2021-11-23 12:44:30,431 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2021-11-23 12:44:30,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:30,431 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2021-11-23 12:44:30,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:30,432 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2021-11-23 12:44:30,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 12:44:30,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:30,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:30,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:30,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:44:30,645 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-23 12:44:30,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:30,645 INFO L85 PathProgramCache]: Analyzing trace with hash -894872323, now seen corresponding path program 1 times [2021-11-23 12:44:30,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:44:30,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987059448] [2021-11-23 12:44:30,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:30,647 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:44:30,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:44:30,648 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:44:30,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 12:44:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:30,736 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:44:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:30,822 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-23 12:44:30,822 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 12:44:30,823 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2021-11-23 12:44:30,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (6 of 8 remaining) [2021-11-23 12:44:30,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (5 of 8 remaining) [2021-11-23 12:44:30,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (4 of 8 remaining) [2021-11-23 12:44:30,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (3 of 8 remaining) [2021-11-23 12:44:30,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (2 of 8 remaining) [2021-11-23 12:44:30,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (1 of 8 remaining) [2021-11-23 12:44:30,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (0 of 8 remaining) [2021-11-23 12:44:30,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:31,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:44:31,030 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:31,033 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 12:44:31,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:44:31 BoogieIcfgContainer [2021-11-23 12:44:31,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 12:44:31,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:44:31,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:44:31,068 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:44:31,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:44:12" (3/4) ... [2021-11-23 12:44:31,072 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 12:44:31,072 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:44:31,073 INFO L158 Benchmark]: Toolchain (without parser) took 19887.86ms. Allocated memory was 58.7MB in the beginning and 88.1MB in the end (delta: 29.4MB). Free memory was 34.9MB in the beginning and 62.7MB in the end (delta: -27.8MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2021-11-23 12:44:31,078 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 39.5MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:44:31,078 INFO L158 Benchmark]: CACSL2BoogieTranslator took 984.37ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 34.7MB in the beginning and 50.3MB in the end (delta: -15.6MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2021-11-23 12:44:31,079 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.59ms. Allocated memory is still 73.4MB. Free memory was 50.3MB in the beginning and 47.9MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 12:44:31,079 INFO L158 Benchmark]: Boogie Preprocessor took 47.17ms. Allocated memory is still 73.4MB. Free memory was 47.9MB in the beginning and 46.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:44:31,079 INFO L158 Benchmark]: RCFGBuilder took 400.39ms. Allocated memory is still 73.4MB. Free memory was 46.6MB in the beginning and 53.7MB in the end (delta: -7.1MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2021-11-23 12:44:31,080 INFO L158 Benchmark]: TraceAbstraction took 18357.65ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 53.4MB in the beginning and 63.4MB in the end (delta: -10.0MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-11-23 12:44:31,080 INFO L158 Benchmark]: Witness Printer took 4.30ms. Allocated memory is still 88.1MB. Free memory was 63.4MB in the beginning and 62.7MB in the end (delta: 753.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:44:31,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 39.5MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 984.37ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 34.7MB in the beginning and 50.3MB in the end (delta: -15.6MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.59ms. Allocated memory is still 73.4MB. Free memory was 50.3MB in the beginning and 47.9MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.17ms. Allocated memory is still 73.4MB. Free memory was 47.9MB in the beginning and 46.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 400.39ms. Allocated memory is still 73.4MB. Free memory was 46.6MB in the beginning and 53.7MB in the end (delta: -7.1MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. * TraceAbstraction took 18357.65ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 53.4MB in the beginning and 63.4MB in the end (delta: -10.0MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Witness Printer took 4.30ms. Allocated memory is still 88.1MB. Free memory was 63.4MB in the beginning and 62.7MB in the end (delta: 753.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 790]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 790. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L782] struct A a6; VAL [a6={2:0}, ldv_global_msg_list={1:0}] [L791] CALL entry_point() [L784] CALL, EXPR probe1_6(&a6) [L764] int ret = - -3; [L765] CALL, EXPR ldv_malloc(sizeof(int)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L765] RET, EXPR ldv_malloc(sizeof(int)) [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) [L768] CALL, EXPR f6() [L758] return __VERIFIER_nondet_int(); [L768] RET, EXPR f6() [L768] ret = f6() [L769] COND FALSE !(ret<0) [L771] CALL, EXPR g6() [L761] return __VERIFIER_nondet_int(); [L771] RET, EXPR g6() [L771] ret = g6() [L772] COND FALSE !(ret<0) VAL [a={2:0}, a={2:0}, a6={2:0}, ldv_global_msg_list={1:0}, p={3:0}, ret=0] [L774] a->p = p VAL [a={2:0}, a={2:0}, a6={2:0}, ldv_global_msg_list={1:0}, p={3:0}, ret=0] [L775] return 0; VAL [\result=0, a={2:0}, a={2:0}, a6={2:0}, ldv_global_msg_list={1:0}, p={3:0}, ret=0] [L784] RET, EXPR probe1_6(&a6) [L784] int ret = probe1_6(&a6); [L785] COND TRUE ret==0 [L786] FCALL disconnect_2_6(&a6) [L788] a6.p = 0 VAL [a6={2:0}, ldv_global_msg_list={1:0}, ret=0] [L791] RET entry_point() - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: 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 1 procedures, 30 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 18.2s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 563 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 563 mSDsluCounter, 815 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 41 IncrementalHoareTripleChecker+Unchecked, 442 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 266 IncrementalHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 373 mSDtfsCounter, 266 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 236 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=4, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 70 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 179 NumberOfCodeBlocks, 179 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 294 ConstructedInterpolants, 20 QuantifiedInterpolants, 2307 SizeOfPredicates, 29 NumberOfNonLiveVariables, 702 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 30 InterpolantComputations, 30 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 12:44:31,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1333edb0-3b6a-449a-9fa8-d3e7d40506e3/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample