./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ --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 9a08b66a27502bd32ab373960778294a6ce88841aa5560ae4bca712e152c143f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 11:09:07,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:09:07,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:09:08,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:09:08,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:09:08,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:09:08,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:09:08,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:09:08,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:09:08,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:09:08,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:09:08,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:09:08,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:09:08,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:09:08,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:09:08,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:09:08,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:09:08,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:09:08,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:09:08,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:09:08,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:09:08,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:09:08,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:09:08,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:09:08,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:09:08,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:09:08,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:09:08,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:09:08,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:09:08,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:09:08,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:09:08,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:09:08,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:09:08,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:09:08,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:09:08,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:09:08,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:09:08,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:09:08,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:09:08,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:09:08,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:09:08,131 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-17 11:09:08,189 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:09:08,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:09:08,190 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:09:08,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:09:08,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:09:08,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:09:08,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:09:08,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:09:08,193 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:09:08,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:09:08,195 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:09:08,196 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 11:09:08,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:09:08,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:09:08,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:09:08,197 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 11:09:08,197 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 11:09:08,197 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 11:09:08,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:09:08,198 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 11:09:08,198 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:09:08,199 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:09:08,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:09:08,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:09:08,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:09:08,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:09:08,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:09:08,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:09:08,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:09:08,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:09:08,203 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_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a08b66a27502bd32ab373960778294a6ce88841aa5560ae4bca712e152c143f [2022-10-17 11:09:08,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:09:08,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:09:08,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:09:08,520 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:09:08,521 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:09:08,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i [2022-10-17 11:09:08,608 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/data/04be45dc6/11507d04ac1d42faa22e3b20751df2ed/FLAG283809134 [2022-10-17 11:09:09,221 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:09:09,222 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i [2022-10-17 11:09:09,257 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/data/04be45dc6/11507d04ac1d42faa22e3b20751df2ed/FLAG283809134 [2022-10-17 11:09:09,394 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/data/04be45dc6/11507d04ac1d42faa22e3b20751df2ed [2022-10-17 11:09:09,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:09:09,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:09:09,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:09:09,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:09:09,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:09:09,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:09:09" (1/1) ... [2022-10-17 11:09:09,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a683ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:09, skipping insertion in model container [2022-10-17 11:09:09,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:09:09" (1/1) ... [2022-10-17 11:09:09,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:09:09,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:09:10,043 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[33021,33034] [2022-10-17 11:09:10,237 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[49681,49694] [2022-10-17 11:09:10,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:09:10,281 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-10-17 11:09:10,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7bc21078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:10, skipping insertion in model container [2022-10-17 11:09:10,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:09:10,282 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-10-17 11:09:10,284 INFO L158 Benchmark]: Toolchain (without parser) took 885.46ms. Allocated memory is still 119.5MB. Free memory was 69.5MB in the beginning and 79.1MB in the end (delta: -9.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 11:09:10,285 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 119.5MB. Free memory was 88.6MB in the beginning and 88.5MB in the end (delta: 69.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 11:09:10,286 INFO L158 Benchmark]: CACSL2BoogieTranslator took 882.71ms. Allocated memory is still 119.5MB. Free memory was 69.3MB in the beginning and 79.1MB in the end (delta: -9.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 11:09:10,288 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 119.5MB. Free memory was 88.6MB in the beginning and 88.5MB in the end (delta: 69.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 882.71ms. Allocated memory is still 119.5MB. Free memory was 69.3MB in the beginning and 79.1MB in the end (delta: -9.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ --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 9a08b66a27502bd32ab373960778294a6ce88841aa5560ae4bca712e152c143f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 11:09:12,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:09:12,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:09:12,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:09:12,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:09:12,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:09:12,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:09:12,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:09:12,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:09:12,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:09:12,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:09:12,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:09:12,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:09:12,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:09:12,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:09:12,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:09:12,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:09:12,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:09:12,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:09:12,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:09:12,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:09:12,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:09:12,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:09:12,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:09:12,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:09:12,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:09:12,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:09:12,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:09:12,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:09:12,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:09:12,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:09:12,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:09:12,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:09:12,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:09:12,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:09:12,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:09:12,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:09:12,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:09:12,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:09:12,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:09:12,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:09:12,771 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-10-17 11:09:12,801 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:09:12,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:09:12,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:09:12,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:09:12,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:09:12,805 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:09:12,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:09:12,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:09:12,806 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:09:12,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:09:12,807 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:09:12,807 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 11:09:12,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:09:12,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:09:12,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:09:12,808 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 11:09:12,808 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 11:09:12,808 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 11:09:12,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:09:12,808 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 11:09:12,808 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 11:09:12,809 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 11:09:12,809 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:09:12,809 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:09:12,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:09:12,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:09:12,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:09:12,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:09:12,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:09:12,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:09:12,810 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 11:09:12,811 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 11:09:12,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 11:09:12,811 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_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a08b66a27502bd32ab373960778294a6ce88841aa5560ae4bca712e152c143f [2022-10-17 11:09:13,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:09:13,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:09:13,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:09:13,272 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:09:13,273 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:09:13,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i [2022-10-17 11:09:13,347 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/data/ac6f16ace/bbbb7c4bb0284ce1af7378869fd65740/FLAGf6438ea72 [2022-10-17 11:09:14,024 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:09:14,024 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i [2022-10-17 11:09:14,057 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/data/ac6f16ace/bbbb7c4bb0284ce1af7378869fd65740/FLAGf6438ea72 [2022-10-17 11:09:14,279 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/data/ac6f16ace/bbbb7c4bb0284ce1af7378869fd65740 [2022-10-17 11:09:14,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:09:14,283 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:09:14,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:09:14,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:09:14,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:09:14,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:09:14" (1/1) ... [2022-10-17 11:09:14,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68d08288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:14, skipping insertion in model container [2022-10-17 11:09:14,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:09:14" (1/1) ... [2022-10-17 11:09:14,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:09:14,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:09:15,011 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[33021,33034] [2022-10-17 11:09:15,272 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[49681,49694] [2022-10-17 11:09:15,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:09:15,305 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-10-17 11:09:15,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:09:15,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[33021,33034] [2022-10-17 11:09:15,462 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[49681,49694] [2022-10-17 11:09:15,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:09:15,492 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:09:15,530 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[33021,33034] [2022-10-17 11:09:15,629 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[49681,49694] [2022-10-17 11:09:15,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:09:15,683 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:09:15,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:15 WrapperNode [2022-10-17 11:09:15,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:09:15,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:09:15,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:09:15,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:09:15,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:15" (1/1) ... [2022-10-17 11:09:15,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:15" (1/1) ... [2022-10-17 11:09:15,878 INFO L138 Inliner]: procedures = 180, calls = 439, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1578 [2022-10-17 11:09:15,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:09:15,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:09:15,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:09:15,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:09:15,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:15" (1/1) ... [2022-10-17 11:09:15,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:15" (1/1) ... [2022-10-17 11:09:15,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:15" (1/1) ... [2022-10-17 11:09:15,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:15" (1/1) ... [2022-10-17 11:09:16,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:15" (1/1) ... [2022-10-17 11:09:16,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:15" (1/1) ... [2022-10-17 11:09:16,040 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:15" (1/1) ... [2022-10-17 11:09:16,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:15" (1/1) ... [2022-10-17 11:09:16,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:09:16,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:09:16,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:09:16,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:09:16,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:15" (1/1) ... [2022-10-17 11:09:16,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:09:16,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:09:16,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:09:16,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:09:16,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-10-17 11:09:16,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 11:09:16,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 11:09:16,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 11:09:16,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 11:09:16,142 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 11:09:16,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 11:09:16,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:09:16,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 11:09:16,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 11:09:16,142 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-10-17 11:09:16,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 11:09:16,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 11:09:16,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 11:09:16,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 11:09:16,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:09:16,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:09:16,547 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:09:16,549 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:09:16,553 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 11:09:25,052 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:09:25,071 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:09:25,071 INFO L300 CfgBuilder]: Removed 92 assume(true) statements. [2022-10-17 11:09:25,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:09:25 BoogieIcfgContainer [2022-10-17 11:09:25,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:09:25,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:09:25,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:09:25,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:09:25,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:09:14" (1/3) ... [2022-10-17 11:09:25,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a6a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:09:25, skipping insertion in model container [2022-10-17 11:09:25,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:15" (2/3) ... [2022-10-17 11:09:25,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a6a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:09:25, skipping insertion in model container [2022-10-17 11:09:25,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:09:25" (3/3) ... [2022-10-17 11:09:25,085 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test5-2.i [2022-10-17 11:09:25,108 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:09:25,108 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 834 error locations. [2022-10-17 11:09:25,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:09:25,201 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e465a27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:09:25,201 INFO L358 AbstractCegarLoop]: Starting to check reachability of 834 error locations. [2022-10-17 11:09:25,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 1655 states, 813 states have (on average 2.2484624846248464) internal successors, (1828), 1646 states have internal predecessors, (1828), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-10-17 11:09:25,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 11:09:25,219 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:25,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 11:09:25,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-10-17 11:09:25,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:25,226 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2022-10-17 11:09:25,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 11:09:25,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989485631] [2022-10-17 11:09:25,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:25,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 11:09:25,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 11:09:25,247 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 11:09:25,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 11:09:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:25,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 11:09:25,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:09:25,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:09:25,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:09:25,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 11:09:25,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989485631] [2022-10-17 11:09:25,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989485631] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:25,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:09:25,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:09:25,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838852242] [2022-10-17 11:09:25,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:25,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 11:09:25,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 11:09:25,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 11:09:25,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:09:25,558 INFO L87 Difference]: Start difference. First operand has 1655 states, 813 states have (on average 2.2484624846248464) internal successors, (1828), 1646 states have internal predecessors, (1828), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-10-17 11:09:25,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:09:25,716 INFO L93 Difference]: Finished difference Result 1637 states and 1731 transitions. [2022-10-17 11:09:25,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 11:09:25,718 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-10-17 11:09:25,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:09:25,756 INFO L225 Difference]: With dead ends: 1637 [2022-10-17 11:09:25,756 INFO L226 Difference]: Without dead ends: 1635 [2022-10-17 11:09:25,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:09:25,764 INFO L413 NwaCegarLoop]: 1731 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:09:25,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:09:25,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2022-10-17 11:09:25,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1635. [2022-10-17 11:09:25,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 804 states have (on average 2.123134328358209) internal successors, (1707), 1626 states have internal predecessors, (1707), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-10-17 11:09:25,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 1729 transitions. [2022-10-17 11:09:25,907 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 1729 transitions. Word has length 5 [2022-10-17 11:09:25,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:09:25,908 INFO L495 AbstractCegarLoop]: Abstraction has 1635 states and 1729 transitions. [2022-10-17 11:09:25,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-10-17 11:09:25,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 1729 transitions. [2022-10-17 11:09:25,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 11:09:25,909 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:25,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 11:09:25,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 11:09:26,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 11:09:26,121 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-10-17 11:09:26,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:26,122 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2022-10-17 11:09:26,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 11:09:26,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906691510] [2022-10-17 11:09:26,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:26,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 11:09:26,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 11:09:26,139 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 11:09:26,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 11:09:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:26,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 11:09:26,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:09:26,371 INFO L390 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 7 [2022-10-17 11:09:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:09:26,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:09:26,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 11:09:26,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906691510] [2022-10-17 11:09:26,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906691510] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:26,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:09:26,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:09:26,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166276771] [2022-10-17 11:09:26,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:26,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:09:26,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 11:09:26,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:09:26,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:09:26,405 INFO L87 Difference]: Start difference. First operand 1635 states and 1729 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-10-17 11:09:29,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:09:29,963 INFO L93 Difference]: Finished difference Result 1891 states and 2028 transitions. [2022-10-17 11:09:29,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:09:29,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-10-17 11:09:29,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:09:29,982 INFO L225 Difference]: With dead ends: 1891 [2022-10-17 11:09:29,982 INFO L226 Difference]: Without dead ends: 1891 [2022-10-17 11:09:29,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:09:29,984 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 1369 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-10-17 11:09:29,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 1533 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-10-17 11:09:29,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2022-10-17 11:09:30,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1620. [2022-10-17 11:09:30,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 880 states have (on average 1.9897727272727272) internal successors, (1751), 1611 states have internal predecessors, (1751), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-10-17 11:09:30,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 1773 transitions. [2022-10-17 11:09:30,035 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 1773 transitions. Word has length 5 [2022-10-17 11:09:30,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:09:30,035 INFO L495 AbstractCegarLoop]: Abstraction has 1620 states and 1773 transitions. [2022-10-17 11:09:30,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-10-17 11:09:30,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 1773 transitions. [2022-10-17 11:09:30,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 11:09:30,036 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:30,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 11:09:30,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 11:09:30,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 11:09:30,250 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-10-17 11:09:30,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:30,251 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2022-10-17 11:09:30,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 11:09:30,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511108797] [2022-10-17 11:09:30,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:30,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 11:09:30,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 11:09:30,255 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 11:09:30,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 11:09:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:30,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 11:09:30,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:09:30,415 INFO L390 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 [2022-10-17 11:09:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:09:30,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:09:30,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 11:09:30,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511108797] [2022-10-17 11:09:30,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511108797] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:30,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:09:30,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:09:30,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561004461] [2022-10-17 11:09:30,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:30,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:09:30,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 11:09:30,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:09:30,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:09:30,440 INFO L87 Difference]: Start difference. First operand 1620 states and 1773 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-10-17 11:09:35,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:09:35,179 INFO L93 Difference]: Finished difference Result 2140 states and 2343 transitions. [2022-10-17 11:09:35,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:09:35,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-10-17 11:09:35,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:09:35,192 INFO L225 Difference]: With dead ends: 2140 [2022-10-17 11:09:35,192 INFO L226 Difference]: Without dead ends: 2140 [2022-10-17 11:09:35,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:09:35,194 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 741 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-10-17 11:09:35,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 2268 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-10-17 11:09:35,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2022-10-17 11:09:35,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1776. [2022-10-17 11:09:35,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1776 states, 1046 states have (on average 1.9665391969407267) internal successors, (2057), 1767 states have internal predecessors, (2057), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-10-17 11:09:35,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2079 transitions. [2022-10-17 11:09:35,247 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2079 transitions. Word has length 5 [2022-10-17 11:09:35,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:09:35,247 INFO L495 AbstractCegarLoop]: Abstraction has 1776 states and 2079 transitions. [2022-10-17 11:09:35,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-10-17 11:09:35,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2079 transitions. [2022-10-17 11:09:35,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 11:09:35,248 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:35,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 11:09:35,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 11:09:35,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 11:09:35,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-10-17 11:09:35,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:35,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2022-10-17 11:09:35,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 11:09:35,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984681080] [2022-10-17 11:09:35,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:35,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 11:09:35,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 11:09:35,463 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 11:09:35,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 11:09:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:35,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 11:09:35,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:09:35,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:09:35,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:09:35,660 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 11:09:35,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984681080] [2022-10-17 11:09:35,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984681080] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:35,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:09:35,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:09:35,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988072177] [2022-10-17 11:09:35,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:35,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:09:35,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 11:09:35,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:09:35,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:09:35,668 INFO L87 Difference]: Start difference. First operand 1776 states and 2079 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-10-17 11:09:35,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:09:35,859 INFO L93 Difference]: Finished difference Result 3336 states and 3931 transitions. [2022-10-17 11:09:35,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:09:35,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-10-17 11:09:35,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:09:35,883 INFO L225 Difference]: With dead ends: 3336 [2022-10-17 11:09:35,883 INFO L226 Difference]: Without dead ends: 3336 [2022-10-17 11:09:35,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:09:35,886 INFO L413 NwaCegarLoop]: 1854 mSDtfsCounter, 1377 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 3471 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:09:35,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 3471 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:09:35,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2022-10-17 11:09:35,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 1778. [2022-10-17 11:09:35,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1048 states have (on average 1.9646946564885497) internal successors, (2059), 1769 states have internal predecessors, (2059), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-10-17 11:09:35,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2081 transitions. [2022-10-17 11:09:35,964 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2081 transitions. Word has length 6 [2022-10-17 11:09:35,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:09:35,965 INFO L495 AbstractCegarLoop]: Abstraction has 1778 states and 2081 transitions. [2022-10-17 11:09:35,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-10-17 11:09:35,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2081 transitions. [2022-10-17 11:09:35,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 11:09:35,966 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:35,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:09:35,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 11:09:36,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 11:09:36,183 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-10-17 11:09:36,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:36,186 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2022-10-17 11:09:36,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 11:09:36,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813637151] [2022-10-17 11:09:36,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:36,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 11:09:36,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 11:09:36,187 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 11:09:36,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 11:09:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:36,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 11:09:36,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:09:36,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:09:36,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:09:36,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 11:09:36,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813637151] [2022-10-17 11:09:36,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813637151] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:36,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:09:36,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:09:36,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625400540] [2022-10-17 11:09:36,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:36,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:09:36,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 11:09:36,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:09:36,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:09:36,401 INFO L87 Difference]: Start difference. First operand 1778 states and 2081 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-10-17 11:09:36,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:09:36,467 INFO L93 Difference]: Finished difference Result 1742 states and 2044 transitions. [2022-10-17 11:09:36,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:09:36,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-10-17 11:09:36,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:09:36,477 INFO L225 Difference]: With dead ends: 1742 [2022-10-17 11:09:36,478 INFO L226 Difference]: Without dead ends: 1742 [2022-10-17 11:09:36,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:09:36,479 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 1550 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:09:36,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1561 Valid, 1608 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:09:36,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2022-10-17 11:09:36,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1736. [2022-10-17 11:09:36,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1736 states, 1030 states have (on average 1.9572815533980583) internal successors, (2016), 1727 states have internal predecessors, (2016), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-10-17 11:09:36,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 2038 transitions. [2022-10-17 11:09:36,527 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 2038 transitions. Word has length 11 [2022-10-17 11:09:36,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:09:36,528 INFO L495 AbstractCegarLoop]: Abstraction has 1736 states and 2038 transitions. [2022-10-17 11:09:36,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-10-17 11:09:36,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 2038 transitions. [2022-10-17 11:09:36,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 11:09:36,529 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:36,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:09:36,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-10-17 11:09:36,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 11:09:36,740 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-10-17 11:09:36,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:36,741 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2022-10-17 11:09:36,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 11:09:36,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373656408] [2022-10-17 11:09:36,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:36,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 11:09:36,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 11:09:36,743 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 11:09:36,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-10-17 11:09:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:36,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 11:09:36,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:09:36,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:09:36,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:09:36,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 11:09:36,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373656408] [2022-10-17 11:09:36,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373656408] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:36,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:09:36,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:09:36,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147897107] [2022-10-17 11:09:36,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:36,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:09:36,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 11:09:36,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:09:36,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:09:36,980 INFO L87 Difference]: Start difference. First operand 1736 states and 2038 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-10-17 11:09:37,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:09:37,092 INFO L93 Difference]: Finished difference Result 1721 states and 2016 transitions. [2022-10-17 11:09:37,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 11:09:37,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 [2022-10-17 11:09:37,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:09:37,103 INFO L225 Difference]: With dead ends: 1721 [2022-10-17 11:09:37,103 INFO L226 Difference]: Without dead ends: 1721 [2022-10-17 11:09:37,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:09:37,105 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1521 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:09:37,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 3091 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:09:37,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2022-10-17 11:09:37,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1714. [2022-10-17 11:09:37,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1022 states have (on average 1.9442270058708415) internal successors, (1987), 1705 states have internal predecessors, (1987), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-10-17 11:09:37,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2009 transitions. [2022-10-17 11:09:37,149 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2009 transitions. Word has length 13 [2022-10-17 11:09:37,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:09:37,150 INFO L495 AbstractCegarLoop]: Abstraction has 1714 states and 2009 transitions. [2022-10-17 11:09:37,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-10-17 11:09:37,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2009 transitions. [2022-10-17 11:09:37,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-17 11:09:37,152 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:37,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:09:37,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-10-17 11:09:37,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 11:09:37,367 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-10-17 11:09:37,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:37,368 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2022-10-17 11:09:37,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 11:09:37,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759258397] [2022-10-17 11:09:37,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:37,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 11:09:37,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 11:09:37,371 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 11:09:37,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_968becca-b7fa-4f7f-b036-37ecfae6817d/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-10-17 11:09:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:37,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 11:09:37,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:09:37,578 INFO L390 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 7 [2022-10-17 11:09:37,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:09:37,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:09:37,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 11:09:37,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759258397] [2022-10-17 11:09:37,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759258397] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:37,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:09:37,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:09:37,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762632553] [2022-10-17 11:09:37,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:37,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:09:37,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 11:09:37,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:09:37,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:09:37,681 INFO L87 Difference]: Start difference. First operand 1714 states and 2009 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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)