./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX --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 a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:49:51,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:49:51,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:49:51,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:49:51,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:49:51,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:49:51,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:49:51,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:49:51,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:49:51,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:49:51,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:49:51,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:49:51,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:49:51,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:49:51,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:49:51,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:49:51,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:49:51,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:49:51,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:49:51,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:49:51,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:49:51,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:49:51,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:49:51,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:49:51,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:49:51,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:49:51,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:49:51,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:49:51,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:49:51,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:49:51,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:49:51,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:49:51,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:49:51,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:49:51,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:49:51,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:49:51,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:49:51,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:49:51,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:49:51,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:49:51,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:49:51,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 09:49:51,319 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:49:51,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:49:51,322 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:49:51,323 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:49:51,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:49:51,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:49:51,325 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:49:51,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:49:51,326 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:49:51,326 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:49:51,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:49:51,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:49:51,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:49:51,328 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 09:49:51,329 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 09:49:51,329 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 09:49:51,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:49:51,329 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 09:49:51,330 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:49:51,330 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:49:51,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:49:51,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:49:51,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:49:51,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:49:51,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:49:51,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:49:51,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:49:51,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:49:51,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:49:51,334 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_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 [2021-11-09 09:49:51,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:49:51,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:49:51,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:49:51,682 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:49:51,683 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:49:51,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2021-11-09 09:49:51,765 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/data/9a84aaaba/380509c5f9e745b8967350b55e640aed/FLAG38cdcffe9 [2021-11-09 09:49:52,468 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:49:52,469 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2021-11-09 09:49:52,499 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/data/9a84aaaba/380509c5f9e745b8967350b55e640aed/FLAG38cdcffe9 [2021-11-09 09:49:52,693 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/data/9a84aaaba/380509c5f9e745b8967350b55e640aed [2021-11-09 09:49:52,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:49:52,698 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 09:49:52,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:49:52,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:49:52,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:49:52,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:49:52" (1/1) ... [2021-11-09 09:49:52,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0b3a03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:52, skipping insertion in model container [2021-11-09 09:49:52,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:49:52" (1/1) ... [2021-11-09 09:49:52,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:49:52,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:49:53,369 WARN L228 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_3f2583ca-d949-49e8-a522-1cf0e442c0ee/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[33021,33034] [2021-11-09 09:49:53,580 WARN L228 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_3f2583ca-d949-49e8-a522-1cf0e442c0ee/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[49681,49694] [2021-11-09 09:49:53,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:49:53,614 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-09 09:49:53,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5315aa6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:53, skipping insertion in model container [2021-11-09 09:49:53,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:49:53,616 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-09 09:49:53,618 INFO L168 Benchmark]: Toolchain (without parser) took 919.28 ms. Allocated memory is still 119.5 MB. Free memory was 76.8 MB in the beginning and 79.0 MB in the end (delta: -2.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 09:49:53,619 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 119.5 MB. Free memory was 96.6 MB in the beginning and 96.5 MB in the end (delta: 67.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:49:53,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 916.44 ms. Allocated memory is still 119.5 MB. Free memory was 76.6 MB in the beginning and 79.0 MB in the end (delta: -2.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 09:49:53,631 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 119.5 MB. Free memory was 96.6 MB in the beginning and 96.5 MB in the end (delta: 67.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 916.44 ms. Allocated memory is still 119.5 MB. Free memory was 76.6 MB in the beginning and 79.0 MB in the end (delta: -2.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX --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 a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:49:56,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:49:56,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:49:56,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:49:56,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:49:56,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:49:56,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:49:56,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:49:56,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:49:56,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:49:56,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:49:56,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:49:56,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:49:56,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:49:56,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:49:56,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:49:56,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:49:56,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:49:56,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:49:56,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:49:56,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:49:56,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:49:56,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:49:56,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:49:56,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:49:56,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:49:56,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:49:56,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:49:56,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:49:56,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:49:56,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:49:56,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:49:56,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:49:56,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:49:56,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:49:56,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:49:56,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:49:56,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:49:56,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:49:56,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:49:56,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:49:56,146 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 09:49:56,198 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:49:56,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:49:56,200 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:49:56,200 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:49:56,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:49:56,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:49:56,203 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:49:56,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:49:56,203 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:49:56,204 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:49:56,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:49:56,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:49:56,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:49:56,206 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 09:49:56,206 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 09:49:56,206 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 09:49:56,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:49:56,206 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 09:49:56,207 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 09:49:56,207 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 09:49:56,207 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:49:56,207 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:49:56,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:49:56,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:49:56,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:49:56,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:49:56,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:49:56,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:49:56,209 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 09:49:56,209 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 09:49:56,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:49:56,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 09:49:56,210 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_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 [2021-11-09 09:49:56,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:49:56,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:49:56,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:49:56,669 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:49:56,670 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:49:56,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2021-11-09 09:49:56,766 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/data/d4bee67c3/3b75e0090da24390860fddb1541de3d1/FLAGdbac8e65c [2021-11-09 09:49:57,503 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:49:57,504 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2021-11-09 09:49:57,527 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/data/d4bee67c3/3b75e0090da24390860fddb1541de3d1/FLAGdbac8e65c [2021-11-09 09:49:57,650 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/data/d4bee67c3/3b75e0090da24390860fddb1541de3d1 [2021-11-09 09:49:57,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:49:57,654 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 09:49:57,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:49:57,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:49:57,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:49:57,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:49:57" (1/1) ... [2021-11-09 09:49:57,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29b4747a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:57, skipping insertion in model container [2021-11-09 09:49:57,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:49:57" (1/1) ... [2021-11-09 09:49:57,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:49:57,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:49:58,332 WARN L228 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_3f2583ca-d949-49e8-a522-1cf0e442c0ee/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[33021,33034] [2021-11-09 09:49:58,507 WARN L228 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_3f2583ca-d949-49e8-a522-1cf0e442c0ee/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[49681,49694] [2021-11-09 09:49:58,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:49:58,575 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-09 09:49:58,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:49:58,616 WARN L228 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_3f2583ca-d949-49e8-a522-1cf0e442c0ee/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[33021,33034] [2021-11-09 09:49:58,734 WARN L228 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_3f2583ca-d949-49e8-a522-1cf0e442c0ee/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[49681,49694] [2021-11-09 09:49:58,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:49:58,779 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:49:58,839 WARN L228 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_3f2583ca-d949-49e8-a522-1cf0e442c0ee/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[33021,33034] [2021-11-09 09:49:58,988 WARN L228 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_3f2583ca-d949-49e8-a522-1cf0e442c0ee/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[49681,49694] [2021-11-09 09:49:59,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:49:59,090 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:49:59,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:59 WrapperNode [2021-11-09 09:49:59,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:49:59,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:49:59,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:49:59,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:49:59,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:59" (1/1) ... [2021-11-09 09:49:59,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:59" (1/1) ... [2021-11-09 09:49:59,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:59" (1/1) ... [2021-11-09 09:49:59,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:59" (1/1) ... [2021-11-09 09:49:59,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:59" (1/1) ... [2021-11-09 09:49:59,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:59" (1/1) ... [2021-11-09 09:49:59,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:59" (1/1) ... [2021-11-09 09:49:59,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:49:59,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:49:59,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:49:59,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:49:59,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:59" (1/1) ... [2021-11-09 09:49:59,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:49:59,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:49:59,432 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:49:59,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:49:59,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 09:49:59,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:49:59,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 09:49:59,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 09:49:59,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 09:49:59,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 09:49:59,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 09:49:59,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 09:49:59,476 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-09 09:49:59,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-09 09:49:59,476 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-09 09:49:59,477 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 09:49:59,477 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-09 09:49:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-09 09:49:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-09 09:49:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-09 09:49:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-09 09:49:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 09:49:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-09 09:49:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-09 09:49:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-09 09:49:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-09 09:49:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-09 09:49:59,479 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-09 09:49:59,479 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-09 09:49:59,479 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-09 09:49:59,479 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-09 09:49:59,479 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-09 09:49:59,479 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-09 09:49:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-09 09:49:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-09 09:49:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-09 09:49:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-09 09:49:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-09 09:49:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-09 09:49:59,481 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-09 09:49:59,481 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-09 09:49:59,481 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-09 09:49:59,481 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-09 09:49:59,481 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-09 09:49:59,481 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-09 09:49:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-09 09:49:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-09 09:49:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-09 09:49:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-09 09:49:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-09 09:49:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-09 09:49:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-09 09:49:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-09 09:49:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-09 09:49:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-09 09:49:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-09 09:49:59,484 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-09 09:49:59,484 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-09 09:49:59,484 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-09 09:49:59,484 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-09 09:49:59,484 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-09 09:49:59,484 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-09 09:49:59,485 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-09 09:49:59,485 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-09 09:49:59,485 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-09 09:49:59,485 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-09 09:49:59,485 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-09 09:49:59,486 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-09 09:49:59,486 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 09:49:59,486 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 09:49:59,486 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 09:49:59,486 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 09:49:59,486 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 09:49:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 09:49:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 09:49:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 09:49:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 09:49:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 09:49:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 09:49:59,488 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 09:49:59,488 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 09:49:59,488 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 09:49:59,488 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 09:49:59,488 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 09:49:59,488 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 09:49:59,489 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 09:49:59,489 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 09:49:59,489 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 09:49:59,489 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 09:49:59,489 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 09:49:59,489 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 09:49:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 09:49:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 09:49:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 09:49:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 09:49:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 09:49:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 09:49:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 09:49:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 09:49:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 09:49:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 09:49:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 09:49:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 09:49:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 09:49:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 09:49:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 09:49:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 09:49:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 09:49:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 09:49:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 09:49:59,493 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 09:49:59,493 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 09:49:59,493 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 09:49:59,493 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 09:49:59,493 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 09:49:59,493 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 09:49:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 09:49:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 09:49:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 09:49:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 09:49:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 09:49:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 09:49:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 09:49:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 09:49:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 09:49:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 09:49:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 09:49:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 09:49:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 09:49:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 09:49:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 09:49:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 09:49:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 09:49:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 09:49:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 09:49:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 09:49:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 09:49:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 09:49:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 09:49:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 09:49:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 09:49:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 09:49:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 09:49:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 09:49:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 09:49:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 09:49:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 09:49:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 09:49:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 09:49:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 09:49:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 09:49:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 09:49:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 09:49:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 09:49:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 09:49:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 09:49:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 09:49:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 09:49:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 09:49:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 09:49:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 09:49:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 09:49:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 09:49:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 09:49:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 09:49:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 09:49:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 09:49:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 09:49:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 09:49:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 09:49:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 09:49:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 09:49:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 09:49:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 09:49:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 09:49:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-09 09:49:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-09 09:49:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-09 09:49:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-09 09:49:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:49:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-09 09:49:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-09 09:49:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 09:49:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:49:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 09:49:59,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-09 09:49:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:49:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:49:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-09 09:49:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:49:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 09:49:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 09:49:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 09:49:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:49:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 09:49:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-09 09:50:00,100 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 09:50:08,401 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:50:08,402 INFO L299 CfgBuilder]: Removed 100 assume(true) statements. [2021-11-09 09:50:08,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:50:08 BoogieIcfgContainer [2021-11-09 09:50:08,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:50:08,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:50:08,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:50:08,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:50:08,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:49:57" (1/3) ... [2021-11-09 09:50:08,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e511be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:50:08, skipping insertion in model container [2021-11-09 09:50:08,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:59" (2/3) ... [2021-11-09 09:50:08,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e511be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:50:08, skipping insertion in model container [2021-11-09 09:50:08,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:50:08" (3/3) ... [2021-11-09 09:50:08,416 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test5-3.i [2021-11-09 09:50:08,422 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:50:08,423 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 932 error locations. [2021-11-09 09:50:08,473 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:50:08,480 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:50:08,480 INFO L340 AbstractCegarLoop]: Starting to check reachability of 932 error locations. [2021-11-09 09:50:08,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 1841 states, 895 states have (on average 2.2614525139664803) internal successors, (2024), 1826 states have internal predecessors, (2024), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-09 09:50:08,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 09:50:08,568 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:08,569 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:08,571 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 09:50:08,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:08,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1371675552, now seen corresponding path program 1 times [2021-11-09 09:50:08,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:50:08,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924686141] [2021-11-09 09:50:08,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:08,596 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:50:08,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:50:08,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:50:08,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 09:50:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:08,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 09:50:08,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:50:08,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:08,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:50:09,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:09,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:50:09,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924686141] [2021-11-09 09:50:09,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924686141] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:09,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:09,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 09:50:09,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163935968] [2021-11-09 09:50:09,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:50:09,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:50:09,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:50:09,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:50:09,032 INFO L87 Difference]: Start difference. First operand has 1841 states, 895 states have (on average 2.2614525139664803) internal successors, (2024), 1826 states have internal predecessors, (2024), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:09,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:09,204 INFO L93 Difference]: Finished difference Result 1823 states and 1925 transitions. [2021-11-09 09:50:09,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:50:09,206 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-09 09:50:09,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:09,245 INFO L225 Difference]: With dead ends: 1823 [2021-11-09 09:50:09,245 INFO L226 Difference]: Without dead ends: 1820 [2021-11-09 09:50:09,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:50:09,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2021-11-09 09:50:09,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1820. [2021-11-09 09:50:09,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 886 states have (on average 2.13882618510158) internal successors, (1895), 1806 states have internal predecessors, (1895), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-09 09:50:09,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 1922 transitions. [2021-11-09 09:50:09,417 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 1922 transitions. Word has length 9 [2021-11-09 09:50:09,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:09,424 INFO L470 AbstractCegarLoop]: Abstraction has 1820 states and 1922 transitions. [2021-11-09 09:50:09,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:09,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 1922 transitions. [2021-11-09 09:50:09,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 09:50:09,425 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:09,425 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:09,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-09 09:50:09,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:50:09,637 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 09:50:09,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:09,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1371675490, now seen corresponding path program 1 times [2021-11-09 09:50:09,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:50:09,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027924374] [2021-11-09 09:50:09,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:09,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:50:09,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:50:09,641 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:50:09,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 09:50:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:09,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:50:09,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:50:09,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:50:10,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:10,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:50:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:10,058 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:50:10,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027924374] [2021-11-09 09:50:10,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027924374] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:10,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:10,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 09:50:10,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724805403] [2021-11-09 09:50:10,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:50:10,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:50:10,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:50:10,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:50:10,067 INFO L87 Difference]: Start difference. First operand 1820 states and 1922 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:14,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:14,165 INFO L93 Difference]: Finished difference Result 2065 states and 2201 transitions. [2021-11-09 09:50:14,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:50:14,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-09 09:50:14,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:14,180 INFO L225 Difference]: With dead ends: 2065 [2021-11-09 09:50:14,180 INFO L226 Difference]: Without dead ends: 2065 [2021-11-09 09:50:14,181 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:50:14,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2021-11-09 09:50:14,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 1805. [2021-11-09 09:50:14,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 962 states have (on average 2.0155925155925156) internal successors, (1939), 1791 states have internal predecessors, (1939), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-09 09:50:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 1966 transitions. [2021-11-09 09:50:14,266 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 1966 transitions. Word has length 9 [2021-11-09 09:50:14,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:14,267 INFO L470 AbstractCegarLoop]: Abstraction has 1805 states and 1966 transitions. [2021-11-09 09:50:14,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:14,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 1966 transitions. [2021-11-09 09:50:14,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 09:50:14,268 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:14,268 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:14,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:50:14,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:50:14,481 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 09:50:14,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:14,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1371675489, now seen corresponding path program 1 times [2021-11-09 09:50:14,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:50:14,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018186619] [2021-11-09 09:50:14,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:14,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:50:14,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:50:14,483 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:50:14,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 09:50:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:14,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:50:14,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:50:14,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:50:14,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:14,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:50:14,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:14,868 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:50:14,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018186619] [2021-11-09 09:50:14,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018186619] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:14,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:14,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 09:50:14,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99952709] [2021-11-09 09:50:14,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:50:14,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:50:14,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:50:14,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:50:14,876 INFO L87 Difference]: Start difference. First operand 1805 states and 1966 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:22,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:22,640 INFO L93 Difference]: Finished difference Result 2365 states and 2568 transitions. [2021-11-09 09:50:22,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:50:22,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-09 09:50:22,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:22,655 INFO L225 Difference]: With dead ends: 2365 [2021-11-09 09:50:22,655 INFO L226 Difference]: Without dead ends: 2365 [2021-11-09 09:50:22,656 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:50:22,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2021-11-09 09:50:22,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 1961. [2021-11-09 09:50:22,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1128 states have (on average 1.9902482269503545) internal successors, (2245), 1947 states have internal predecessors, (2245), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-09 09:50:22,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2272 transitions. [2021-11-09 09:50:22,723 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2272 transitions. Word has length 9 [2021-11-09 09:50:22,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:22,724 INFO L470 AbstractCegarLoop]: Abstraction has 1961 states and 2272 transitions. [2021-11-09 09:50:22,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:22,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2272 transitions. [2021-11-09 09:50:22,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 09:50:22,725 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:22,725 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:22,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:50:22,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:50:22,937 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr640REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 09:50:22,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:22,938 INFO L85 PathProgramCache]: Analyzing trace with hash 429420143, now seen corresponding path program 1 times [2021-11-09 09:50:22,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:50:22,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273578222] [2021-11-09 09:50:22,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:22,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:50:22,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:50:22,940 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:50:22,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 09:50:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:23,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:50:23,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:50:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:23,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:50:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:23,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:50:23,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273578222] [2021-11-09 09:50:23,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273578222] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:23,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:23,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 09:50:23,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111699086] [2021-11-09 09:50:23,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:50:23,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:50:23,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:50:23,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:50:23,236 INFO L87 Difference]: Start difference. First operand 1961 states and 2272 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:23,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:23,492 INFO L93 Difference]: Finished difference Result 3512 states and 4106 transitions. [2021-11-09 09:50:23,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:50:23,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-09 09:50:23,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:23,515 INFO L225 Difference]: With dead ends: 3512 [2021-11-09 09:50:23,515 INFO L226 Difference]: Without dead ends: 3512 [2021-11-09 09:50:23,515 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:50:23,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2021-11-09 09:50:23,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 2895. [2021-11-09 09:50:23,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2061 states have (on average 1.9718583212032994) internal successors, (4064), 2874 states have internal predecessors, (4064), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 09:50:23,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 4105 transitions. [2021-11-09 09:50:23,620 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 4105 transitions. Word has length 10 [2021-11-09 09:50:23,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:23,622 INFO L470 AbstractCegarLoop]: Abstraction has 2895 states and 4105 transitions. [2021-11-09 09:50:23,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:23,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 4105 transitions. [2021-11-09 09:50:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-09 09:50:23,623 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:23,623 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:23,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:50:23,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:50:23,843 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 09:50:23,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:23,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1992388696, now seen corresponding path program 1 times [2021-11-09 09:50:23,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:50:23,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631280247] [2021-11-09 09:50:23,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:23,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:50:23,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:50:23,847 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:50:23,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 09:50:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:24,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:50:24,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:50:24,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:24,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:50:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:24,213 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:50:24,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631280247] [2021-11-09 09:50:24,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631280247] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:24,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:24,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 09:50:24,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838486828] [2021-11-09 09:50:24,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:50:24,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:50:24,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:50:24,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:50:24,216 INFO L87 Difference]: Start difference. First operand 2895 states and 4105 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:24,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:24,298 INFO L93 Difference]: Finished difference Result 2835 states and 4019 transitions. [2021-11-09 09:50:24,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:50:24,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-09 09:50:24,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:24,319 INFO L225 Difference]: With dead ends: 2835 [2021-11-09 09:50:24,319 INFO L226 Difference]: Without dead ends: 2835 [2021-11-09 09:50:24,319 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:50:24,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2021-11-09 09:50:24,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2835. [2021-11-09 09:50:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2025 states have (on average 1.9644444444444444) internal successors, (3978), 2814 states have internal predecessors, (3978), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 09:50:24,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 4019 transitions. [2021-11-09 09:50:24,424 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 4019 transitions. Word has length 15 [2021-11-09 09:50:24,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:24,427 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 4019 transitions. [2021-11-09 09:50:24,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:24,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 4019 transitions. [2021-11-09 09:50:24,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 09:50:24,430 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:24,430 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:24,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:50:24,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:50:24,644 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr29REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 09:50:24,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:24,644 INFO L85 PathProgramCache]: Analyzing trace with hash 869875523, now seen corresponding path program 1 times [2021-11-09 09:50:24,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:50:24,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387684882] [2021-11-09 09:50:24,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:24,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:50:24,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:50:24,646 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:50:24,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 09:50:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:24,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:50:24,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:50:24,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:24,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:50:24,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:24,980 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:50:24,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387684882] [2021-11-09 09:50:24,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387684882] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:24,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:24,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-09 09:50:24,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554529166] [2021-11-09 09:50:24,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:50:24,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:50:24,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:50:24,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:50:24,982 INFO L87 Difference]: Start difference. First operand 2835 states and 4019 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:25,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:25,123 INFO L93 Difference]: Finished difference Result 2807 states and 3963 transitions. [2021-11-09 09:50:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:50:25,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-09 09:50:25,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:25,142 INFO L225 Difference]: With dead ends: 2807 [2021-11-09 09:50:25,143 INFO L226 Difference]: Without dead ends: 2807 [2021-11-09 09:50:25,143 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:50:25,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2021-11-09 09:50:25,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2805. [2021-11-09 09:50:25,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2009 states have (on average 1.951219512195122) internal successors, (3920), 2784 states have internal predecessors, (3920), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 09:50:25,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3961 transitions. [2021-11-09 09:50:25,227 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3961 transitions. Word has length 17 [2021-11-09 09:50:25,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:25,228 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 3961 transitions. [2021-11-09 09:50:25,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:25,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3961 transitions. [2021-11-09 09:50:25,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-09 09:50:25,229 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:25,229 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:25,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:50:25,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:50:25,442 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 09:50:25,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:25,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1247292016, now seen corresponding path program 1 times [2021-11-09 09:50:25,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:50:25,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959321851] [2021-11-09 09:50:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:25,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:50:25,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:50:25,444 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:50:25,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 09:50:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:25,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:50:25,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:50:25,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:50:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:25,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:50:25,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:25,975 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:50:25,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959321851] [2021-11-09 09:50:25,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959321851] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:25,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:25,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 09:50:25,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281778204] [2021-11-09 09:50:25,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:50:25,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:50:25,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:50:25,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:50:25,977 INFO L87 Difference]: Start difference. First operand 2805 states and 3961 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:31,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:31,956 INFO L93 Difference]: Finished difference Result 4419 states and 6013 transitions. [2021-11-09 09:50:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:50:31,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-09 09:50:31,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:31,989 INFO L225 Difference]: With dead ends: 4419 [2021-11-09 09:50:31,989 INFO L226 Difference]: Without dead ends: 4419 [2021-11-09 09:50:31,990 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:50:31,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2021-11-09 09:50:32,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 2801. [2021-11-09 09:50:32,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 2009 states have (on average 1.947237431557989) internal successors, (3912), 2780 states have internal predecessors, (3912), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 09:50:32,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3953 transitions. [2021-11-09 09:50:32,088 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3953 transitions. Word has length 31 [2021-11-09 09:50:32,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:32,089 INFO L470 AbstractCegarLoop]: Abstraction has 2801 states and 3953 transitions. [2021-11-09 09:50:32,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:32,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3953 transitions. [2021-11-09 09:50:32,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-09 09:50:32,090 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:32,090 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:32,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-09 09:50:32,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:50:32,321 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 09:50:32,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:32,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1247292017, now seen corresponding path program 1 times [2021-11-09 09:50:32,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:50:32,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480643545] [2021-11-09 09:50:32,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:32,323 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:50:32,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:50:32,324 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:50:32,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 09:50:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:32,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:50:32,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:50:32,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:50:32,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:32,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:50:33,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:33,480 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:50:33,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480643545] [2021-11-09 09:50:33,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480643545] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:33,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:33,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 09:50:33,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58384692] [2021-11-09 09:50:33,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:50:33,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:50:33,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:50:33,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:50:33,482 INFO L87 Difference]: Start difference. First operand 2801 states and 3953 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:47,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:47,623 INFO L93 Difference]: Finished difference Result 3743 states and 4936 transitions. [2021-11-09 09:50:47,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:50:47,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-09 09:50:47,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:47,647 INFO L225 Difference]: With dead ends: 3743 [2021-11-09 09:50:47,648 INFO L226 Difference]: Without dead ends: 3743 [2021-11-09 09:50:47,648 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:50:47,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2021-11-09 09:50:47,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 2797. [2021-11-09 09:50:47,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2009 states have (on average 1.943255350920856) internal successors, (3904), 2776 states have internal predecessors, (3904), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 09:50:47,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 3945 transitions. [2021-11-09 09:50:47,720 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 3945 transitions. Word has length 31 [2021-11-09 09:50:47,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:47,721 INFO L470 AbstractCegarLoop]: Abstraction has 2797 states and 3945 transitions. [2021-11-09 09:50:47,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:47,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 3945 transitions. [2021-11-09 09:50:47,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-09 09:50:47,723 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:47,723 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:47,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-09 09:50:47,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:50:47,935 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 09:50:47,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:47,936 INFO L85 PathProgramCache]: Analyzing trace with hash 931034612, now seen corresponding path program 1 times [2021-11-09 09:50:47,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:50:47,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452403391] [2021-11-09 09:50:47,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:47,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:50:47,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:50:47,937 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:50:47,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 09:50:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:48,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:50:48,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:50:48,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:48,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:50:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:48,575 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:50:48,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452403391] [2021-11-09 09:50:48,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452403391] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:48,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:48,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 09:50:48,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023175606] [2021-11-09 09:50:48,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:50:48,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:50:48,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:50:48,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:50:48,577 INFO L87 Difference]: Start difference. First operand 2797 states and 3945 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:48,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:48,673 INFO L93 Difference]: Finished difference Result 2785 states and 3925 transitions. [2021-11-09 09:50:48,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:50:48,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-11-09 09:50:48,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:48,700 INFO L225 Difference]: With dead ends: 2785 [2021-11-09 09:50:48,700 INFO L226 Difference]: Without dead ends: 2785 [2021-11-09 09:50:48,700 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:50:48,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2021-11-09 09:50:48,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2785. [2021-11-09 09:50:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 1997 states have (on average 1.944917376064096) internal successors, (3884), 2764 states have internal predecessors, (3884), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 09:50:48,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3925 transitions. [2021-11-09 09:50:48,769 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3925 transitions. Word has length 46 [2021-11-09 09:50:48,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:48,770 INFO L470 AbstractCegarLoop]: Abstraction has 2785 states and 3925 transitions. [2021-11-09 09:50:48,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:48,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3925 transitions. [2021-11-09 09:50:48,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-09 09:50:48,777 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:48,777 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:48,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 09:50:48,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:50:48,991 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 09:50:48,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:48,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1498564056, now seen corresponding path program 1 times [2021-11-09 09:50:48,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:50:48,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937359514] [2021-11-09 09:50:48,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:48,993 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:50:48,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:50:48,994 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:50:49,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-09 09:50:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:49,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:50:49,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:50:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:49,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:50:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:50,269 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:50:50,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937359514] [2021-11-09 09:50:50,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937359514] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:50,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:50,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 09:50:50,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265202411] [2021-11-09 09:50:50,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:50:50,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:50:50,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:50:50,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:50:50,271 INFO L87 Difference]: Start difference. First operand 2785 states and 3925 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:50,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:50,577 INFO L93 Difference]: Finished difference Result 2974 states and 3960 transitions. [2021-11-09 09:50:50,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:50:50,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-11-09 09:50:50,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:50,590 INFO L225 Difference]: With dead ends: 2974 [2021-11-09 09:50:50,590 INFO L226 Difference]: Without dead ends: 2974 [2021-11-09 09:50:50,590 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:50:50,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2021-11-09 09:50:50,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2601. [2021-11-09 09:50:50,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2601 states, 1813 states have (on average 1.9464975179260893) internal successors, (3529), 2580 states have internal predecessors, (3529), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 09:50:50,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3570 transitions. [2021-11-09 09:50:50,655 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3570 transitions. Word has length 54 [2021-11-09 09:50:50,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:50,655 INFO L470 AbstractCegarLoop]: Abstraction has 2601 states and 3570 transitions. [2021-11-09 09:50:50,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:50:50,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3570 transitions. [2021-11-09 09:50:50,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-09 09:50:50,657 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:50,657 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:50,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:50:50,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:50:50,871 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 09:50:50,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:50,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1939122981, now seen corresponding path program 1 times [2021-11-09 09:50:50,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:50:50,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320613910] [2021-11-09 09:50:50,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:50,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:50:50,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:50:50,874 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:50:50,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-09 09:50:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:51,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:50:51,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:50:51,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:50:51,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:50:52,244 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 09:50:52,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-09 09:50:52,252 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-09 09:50:52,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-09 09:50:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:52,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:50:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:59,345 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:50:59,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320613910] [2021-11-09 09:50:59,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320613910] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:59,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:59,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 09:50:59,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304454324] [2021-11-09 09:50:59,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:50:59,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:50:59,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:50:59,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-09 09:50:59,348 INFO L87 Difference]: Start difference. First operand 2601 states and 3570 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:51:25,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:25,192 INFO L93 Difference]: Finished difference Result 4221 states and 5706 transitions. [2021-11-09 09:51:25,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:51:25,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-11-09 09:51:25,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:25,206 INFO L225 Difference]: With dead ends: 4221 [2021-11-09 09:51:25,206 INFO L226 Difference]: Without dead ends: 4221 [2021-11-09 09:51:25,206 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-09 09:51:25,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2021-11-09 09:51:25,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 2741. [2021-11-09 09:51:25,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 1991 states have (on average 1.9010547463586138) internal successors, (3785), 2714 states have internal predecessors, (3785), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-09 09:51:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 3838 transitions. [2021-11-09 09:51:25,305 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 3838 transitions. Word has length 57 [2021-11-09 09:51:25,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:25,305 INFO L470 AbstractCegarLoop]: Abstraction has 2741 states and 3838 transitions. [2021-11-09 09:51:25,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:51:25,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 3838 transitions. [2021-11-09 09:51:25,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 09:51:25,307 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:25,307 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:25,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-09 09:51:25,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:51:25,521 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 09:51:25,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:25,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1549669755, now seen corresponding path program 1 times [2021-11-09 09:51:25,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:51:25,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3353250] [2021-11-09 09:51:25,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:25,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:51:25,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:51:25,524 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:51:25,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-09 09:51:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:51:26,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:51:26,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:26,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:51:26,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-09 09:51:26,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-09 09:51:26,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:26,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:51:26,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:26,530 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:51:26,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3353250] [2021-11-09 09:51:26,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3353250] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:51:26,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:51:26,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 09:51:26,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343832977] [2021-11-09 09:51:26,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:51:26,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:51:26,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:51:26,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:51:26,532 INFO L87 Difference]: Start difference. First operand 2741 states and 3838 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:51:32,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:32,728 INFO L93 Difference]: Finished difference Result 2740 states and 3836 transitions. [2021-11-09 09:51:32,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:51:32,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-09 09:51:32,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:32,737 INFO L225 Difference]: With dead ends: 2740 [2021-11-09 09:51:32,737 INFO L226 Difference]: Without dead ends: 2740 [2021-11-09 09:51:32,737 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:51:32,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2021-11-09 09:51:32,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2740. [2021-11-09 09:51:32,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2740 states, 1991 states have (on average 1.9000502260170768) internal successors, (3783), 2713 states have internal predecessors, (3783), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-09 09:51:32,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 3836 transitions. [2021-11-09 09:51:32,790 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 3836 transitions. Word has length 62 [2021-11-09 09:51:32,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:32,790 INFO L470 AbstractCegarLoop]: Abstraction has 2740 states and 3836 transitions. [2021-11-09 09:51:32,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:51:32,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 3836 transitions. [2021-11-09 09:51:32,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 09:51:32,792 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:32,792 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:32,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-09 09:51:33,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:51:33,005 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 09:51:33,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:33,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1549669756, now seen corresponding path program 1 times [2021-11-09 09:51:33,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:51:33,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292418586] [2021-11-09 09:51:33,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:33,006 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:51:33,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:51:33,007 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:51:33,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-09 09:51:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:51:33,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:51:33,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:33,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:51:33,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-09 09:51:33,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-09 09:51:33,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-09 09:51:33,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-09 09:51:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:33,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:51:34,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:34,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:51:34,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292418586] [2021-11-09 09:51:34,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292418586] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:51:34,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:51:34,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-09 09:51:34,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699582218] [2021-11-09 09:51:34,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:51:34,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:51:34,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:51:34,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:51:34,200 INFO L87 Difference]: Start difference. First operand 2740 states and 3836 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:51:52,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:52,945 INFO L93 Difference]: Finished difference Result 2739 states and 3834 transitions. [2021-11-09 09:51:52,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:51:52,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-09 09:51:52,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:52,954 INFO L225 Difference]: With dead ends: 2739 [2021-11-09 09:51:52,954 INFO L226 Difference]: Without dead ends: 2739 [2021-11-09 09:51:52,954 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:51:52,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2021-11-09 09:51:53,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2739. [2021-11-09 09:51:53,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2739 states, 1989 states have (on average 1.9009552538964303) internal successors, (3781), 2712 states have internal predecessors, (3781), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-09 09:51:53,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3834 transitions. [2021-11-09 09:51:53,012 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3834 transitions. Word has length 62 [2021-11-09 09:51:53,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:53,013 INFO L470 AbstractCegarLoop]: Abstraction has 2739 states and 3834 transitions. [2021-11-09 09:51:53,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:51:53,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3834 transitions. [2021-11-09 09:51:53,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 09:51:53,014 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:53,014 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:53,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-09 09:51:53,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:51:53,229 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 09:51:53,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:53,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1507172066, now seen corresponding path program 1 times [2021-11-09 09:51:53,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:51:53,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097154788] [2021-11-09 09:51:53,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:53,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:51:53,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:51:53,232 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:51:53,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-09 09:51:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:51:53,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:51:53,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:54,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:51:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:54,217 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:51:54,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097154788] [2021-11-09 09:51:54,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097154788] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:51:54,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:51:54,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 09:51:54,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18214751] [2021-11-09 09:51:54,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:51:54,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:51:54,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:51:54,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:51:54,219 INFO L87 Difference]: Start difference. First operand 2739 states and 3834 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:51:54,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:54,466 INFO L93 Difference]: Finished difference Result 2749 states and 3852 transitions. [2021-11-09 09:51:54,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:51:54,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 70 [2021-11-09 09:51:54,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:54,482 INFO L225 Difference]: With dead ends: 2749 [2021-11-09 09:51:54,482 INFO L226 Difference]: Without dead ends: 2749 [2021-11-09 09:51:54,483 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:51:54,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2021-11-09 09:51:54,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2749. [2021-11-09 09:51:54,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 1997 states have (on average 1.899349023535303) internal successors, (3793), 2721 states have internal predecessors, (3793), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-09 09:51:54,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 3852 transitions. [2021-11-09 09:51:54,551 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 3852 transitions. Word has length 70 [2021-11-09 09:51:54,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:54,551 INFO L470 AbstractCegarLoop]: Abstraction has 2749 states and 3852 transitions. [2021-11-09 09:51:54,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:51:54,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 3852 transitions. [2021-11-09 09:51:54,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-09 09:51:54,553 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:54,553 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:54,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-09 09:51:54,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:51:54,770 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 09:51:54,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:54,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1329602274, now seen corresponding path program 1 times [2021-11-09 09:51:54,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:51:54,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775314774] [2021-11-09 09:51:54,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:54,771 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:51:54,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:51:54,773 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:51:54,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-09 09:51:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:51:55,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:51:55,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:55,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:51:56,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:56,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:51:56,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775314774] [2021-11-09 09:51:56,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775314774] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:51:56,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:51:56,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-09 09:51:56,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777412002] [2021-11-09 09:51:56,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:51:56,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:51:56,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:51:56,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:51:56,139 INFO L87 Difference]: Start difference. First operand 2749 states and 3852 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:51:56,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:56,810 INFO L93 Difference]: Finished difference Result 2763 states and 3880 transitions. [2021-11-09 09:51:56,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:51:56,811 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 72 [2021-11-09 09:51:56,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:56,820 INFO L225 Difference]: With dead ends: 2763 [2021-11-09 09:51:56,820 INFO L226 Difference]: Without dead ends: 2759 [2021-11-09 09:51:56,824 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:51:56,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2759 states. [2021-11-09 09:51:56,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2759 to 2755. [2021-11-09 09:51:56,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2755 states, 2003 states have (on average 1.8976535197204194) internal successors, (3801), 2727 states have internal predecessors, (3801), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-09 09:51:56,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3860 transitions. [2021-11-09 09:51:56,879 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3860 transitions. Word has length 72 [2021-11-09 09:51:56,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:56,880 INFO L470 AbstractCegarLoop]: Abstraction has 2755 states and 3860 transitions. [2021-11-09 09:51:56,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:51:56,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3860 transitions. [2021-11-09 09:51:56,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-09 09:51:56,888 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:56,888 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:56,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-09 09:51:57,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:51:57,105 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 09:51:57,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:57,105 INFO L85 PathProgramCache]: Analyzing trace with hash -801825054, now seen corresponding path program 2 times [2021-11-09 09:51:57,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:51:57,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410050933] [2021-11-09 09:51:57,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:51:57,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:51:57,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:51:57,108 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:51:57,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-09 09:51:58,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:51:58,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:51:58,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 09:51:58,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:58,408 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:58,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:51:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:59,062 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:51:59,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410050933] [2021-11-09 09:51:59,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410050933] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:51:59,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:51:59,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-09 09:51:59,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487862167] [2021-11-09 09:51:59,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:51:59,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:51:59,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:51:59,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:51:59,063 INFO L87 Difference]: Start difference. First operand 2755 states and 3860 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:52:00,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:00,999 INFO L93 Difference]: Finished difference Result 2783 states and 3928 transitions. [2021-11-09 09:52:01,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 09:52:01,002 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2021-11-09 09:52:01,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:01,011 INFO L225 Difference]: With dead ends: 2783 [2021-11-09 09:52:01,011 INFO L226 Difference]: Without dead ends: 2779 [2021-11-09 09:52:01,012 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 09:52:01,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2021-11-09 09:52:01,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2767. [2021-11-09 09:52:01,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2767 states, 2015 states have (on average 1.8942928039702234) internal successors, (3817), 2739 states have internal predecessors, (3817), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-09 09:52:01,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 3876 transitions. [2021-11-09 09:52:01,070 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 3876 transitions. Word has length 76 [2021-11-09 09:52:01,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:01,070 INFO L470 AbstractCegarLoop]: Abstraction has 2767 states and 3876 transitions. [2021-11-09 09:52:01,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:52:01,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 3876 transitions. [2021-11-09 09:52:01,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-09 09:52:01,072 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:01,072 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:52:01,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-09 09:52:01,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:52:01,289 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 09:52:01,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:01,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1969283358, now seen corresponding path program 3 times [2021-11-09 09:52:01,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:52:01,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680038258] [2021-11-09 09:52:01,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:52:01,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:52:01,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:52:01,292 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:52:01,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-09 09:52:02,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-09 09:52:02,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:52:02,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 09:52:02,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:52:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:52:03,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:52:05,520 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:52:05,520 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:52:05,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680038258] [2021-11-09 09:52:05,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680038258] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:52:05,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:52:05,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-09 09:52:05,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119004498] [2021-11-09 09:52:05,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-09 09:52:05,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:52:05,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-09 09:52:05,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 09:52:05,523 INFO L87 Difference]: Start difference. First operand 2767 states and 3876 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:52:16,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:16,731 INFO L93 Difference]: Finished difference Result 2823 states and 4060 transitions. [2021-11-09 09:52:16,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-09 09:52:16,732 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 84 [2021-11-09 09:52:16,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:16,739 INFO L225 Difference]: With dead ends: 2823 [2021-11-09 09:52:16,739 INFO L226 Difference]: Without dead ends: 2817 [2021-11-09 09:52:16,741 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-09 09:52:16,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2021-11-09 09:52:16,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2791. [2021-11-09 09:52:16,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2039 states have (on average 1.8871996076508093) internal successors, (3848), 2763 states have internal predecessors, (3848), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-09 09:52:16,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 3907 transitions. [2021-11-09 09:52:16,799 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 3907 transitions. Word has length 84 [2021-11-09 09:52:16,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:16,799 INFO L470 AbstractCegarLoop]: Abstraction has 2791 states and 3907 transitions. [2021-11-09 09:52:16,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:52:16,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 3907 transitions. [2021-11-09 09:52:16,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 09:52:16,801 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:16,801 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:52:16,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-09 09:52:17,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:52:17,018 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 09:52:17,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:17,018 INFO L85 PathProgramCache]: Analyzing trace with hash -512549150, now seen corresponding path program 4 times [2021-11-09 09:52:17,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:52:17,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492853805] [2021-11-09 09:52:17,019 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:52:17,019 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:52:17,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:52:17,021 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:52:17,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-09 09:52:17,809 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:52:17,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:52:17,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-09 09:52:17,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:52:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:52:19,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:52:24,074 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:52:24,074 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:52:24,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492853805] [2021-11-09 09:52:24,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492853805] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:52:24,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:52:24,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-09 09:52:24,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676969910] [2021-11-09 09:52:24,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-09 09:52:24,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:52:24,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-09 09:52:24,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-09 09:52:24,080 INFO L87 Difference]: Start difference. First operand 2791 states and 3907 transitions. Second operand has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:52:44,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:44,314 INFO L93 Difference]: Finished difference Result 2883 states and 4172 transitions. [2021-11-09 09:52:44,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-09 09:52:44,315 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 100 [2021-11-09 09:52:44,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:44,325 INFO L225 Difference]: With dead ends: 2883 [2021-11-09 09:52:44,325 INFO L226 Difference]: Without dead ends: 2879 [2021-11-09 09:52:44,333 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-09 09:52:44,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2021-11-09 09:52:44,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2821. [2021-11-09 09:52:44,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 2069 states have (on average 1.8820686321894635) internal successors, (3894), 2793 states have internal predecessors, (3894), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-09 09:52:44,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 3953 transitions. [2021-11-09 09:52:44,404 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 3953 transitions. Word has length 100 [2021-11-09 09:52:44,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:44,405 INFO L470 AbstractCegarLoop]: Abstraction has 2821 states and 3953 transitions. [2021-11-09 09:52:44,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:52:44,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 3953 transitions. [2021-11-09 09:52:44,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-09 09:52:44,407 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:44,407 INFO L513 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:52:44,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-09 09:52:44,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:52:44,623 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 09:52:44,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:44,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1331912990, now seen corresponding path program 5 times [2021-11-09 09:52:44,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:52:44,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612381345] [2021-11-09 09:52:44,625 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:52:44,625 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:52:44,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:52:44,626 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:52:44,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2583ca-d949-49e8-a522-1cf0e442c0ee/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-09 09:52:46,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-09 09:52:46,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:52:46,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-09 09:52:46,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:52:46,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:52:46,865 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-09 09:52:46,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-09 09:52:46,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-09 09:52:47,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30