./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y --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 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:59:49,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:59:49,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:59:49,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:59:49,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:59:49,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:59:49,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:59:49,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:59:49,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:59:49,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:59:49,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:59:49,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:59:49,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:59:49,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:59:49,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:59:49,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:59:49,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:59:49,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:59:49,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:59:49,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:59:49,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:59:49,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:59:49,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:59:49,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:59:50,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:59:50,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:59:50,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:59:50,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:59:50,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:59:50,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:59:50,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:59:50,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:59:50,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:59:50,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:59:50,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:59:50,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:59:50,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:59:50,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:59:50,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:59:50,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:59:50,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:59:50,024 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 17:59:50,066 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:59:50,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:59:50,067 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:59:50,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:59:50,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:59:50,076 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:59:50,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:59:50,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:59:50,077 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:59:50,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:59:50,078 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:59:50,079 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:59:50,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:59:50,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:59:50,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:59:50,079 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:59:50,080 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:59:50,080 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:59:50,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:59:50,080 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:59:50,081 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:59:50,081 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:59:50,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:59:50,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:59:50,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:59:50,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:59:50,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:59:50,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:59:50,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:59:50,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:59:50,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:59:50,083 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_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 [2021-11-13 17:59:50,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:59:50,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:59:50,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:59:50,397 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:59:50,397 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:59:50,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2021-11-13 17:59:50,480 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/data/6f1ea7318/b245647d7d2542f38407dc8e1dc12c11/FLAG9eb5fb93f [2021-11-13 17:59:51,195 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:59:51,195 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2021-11-13 17:59:51,213 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/data/6f1ea7318/b245647d7d2542f38407dc8e1dc12c11/FLAG9eb5fb93f [2021-11-13 17:59:51,409 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/data/6f1ea7318/b245647d7d2542f38407dc8e1dc12c11 [2021-11-13 17:59:51,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:59:51,412 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:59:51,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:59:51,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:59:51,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:59:51,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:59:51" (1/1) ... [2021-11-13 17:59:51,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7868ccc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:59:51, skipping insertion in model container [2021-11-13 17:59:51,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:59:51" (1/1) ... [2021-11-13 17:59:51,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:59:51,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:59:51,828 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_bef77c72-2b75-450f-abf8-73e2bdc5661a/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i[33021,33034] [2021-11-13 17:59:51,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:59:51,909 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) [2021-11-13 17:59:51,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@37e65569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:59:51, skipping insertion in model container [2021-11-13 17:59:51,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:59:51,910 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 17:59:51,912 INFO L158 Benchmark]: Toolchain (without parser) took 498.96ms. Allocated memory is still 117.4MB. Free memory was 82.8MB in the beginning and 84.9MB in the end (delta: -2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 17:59:51,913 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 83.9MB. Free memory is still 42.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:59:51,914 INFO L158 Benchmark]: CACSL2BoogieTranslator took 494.69ms. Allocated memory is still 117.4MB. Free memory was 82.8MB in the beginning and 84.9MB in the end (delta: -2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 17:59:51,916 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 83.9MB. Free memory is still 42.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 494.69ms. Allocated memory is still 117.4MB. Free memory was 82.8MB in the beginning and 84.9MB in the end (delta: -2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: 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_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y --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 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:59:54,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:59:54,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:59:54,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:59:54,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:59:54,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:59:54,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:59:54,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:59:54,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:59:54,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:59:54,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:59:54,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:59:54,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:59:54,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:59:54,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:59:54,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:59:54,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:59:54,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:59:54,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:59:54,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:59:54,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:59:54,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:59:54,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:59:54,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:59:54,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:59:54,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:59:54,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:59:54,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:59:54,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:59:54,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:59:54,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:59:54,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:59:54,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:59:54,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:59:54,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:59:54,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:59:54,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:59:54,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:59:54,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:59:54,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:59:54,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:59:54,272 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 17:59:54,316 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:59:54,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:59:54,317 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:59:54,317 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:59:54,318 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:59:54,318 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:59:54,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:59:54,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:59:54,320 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:59:54,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:59:54,322 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:59:54,322 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:59:54,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:59:54,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:59:54,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:59:54,323 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:59:54,324 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:59:54,324 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:59:54,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:59:54,324 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:59:54,325 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:59:54,325 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:59:54,325 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:59:54,325 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:59:54,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:59:54,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:59:54,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:59:54,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:59:54,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:59:54,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:59:54,327 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:59:54,327 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:59:54,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:59:54,328 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:59:54,328 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_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 [2021-11-13 17:59:54,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:59:54,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:59:54,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:59:54,769 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:59:54,770 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:59:54,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2021-11-13 17:59:54,839 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/data/ec6617d8c/ed3bd0e806554d24b3af4f6b767e53fc/FLAGb372d8310 [2021-11-13 17:59:55,566 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:59:55,567 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2021-11-13 17:59:55,583 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/data/ec6617d8c/ed3bd0e806554d24b3af4f6b767e53fc/FLAGb372d8310 [2021-11-13 17:59:55,733 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/data/ec6617d8c/ed3bd0e806554d24b3af4f6b767e53fc [2021-11-13 17:59:55,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:59:55,740 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:59:55,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:59:55,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:59:55,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:59:55,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:59:55" (1/1) ... [2021-11-13 17:59:55,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dad5ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:59:55, skipping insertion in model container [2021-11-13 17:59:55,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:59:55" (1/1) ... [2021-11-13 17:59:55,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:59:55,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:59:56,358 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_bef77c72-2b75-450f-abf8-73e2bdc5661a/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i[33021,33034] [2021-11-13 17:59:56,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:59:56,498 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 17:59:56,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:59:56,532 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_bef77c72-2b75-450f-abf8-73e2bdc5661a/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i[33021,33034] [2021-11-13 17:59:56,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:59:56,609 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:59:56,680 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_bef77c72-2b75-450f-abf8-73e2bdc5661a/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i[33021,33034] [2021-11-13 17:59:56,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:59:56,818 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:59:56,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:59:56 WrapperNode [2021-11-13 17:59:56,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:59:56,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:59:56,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:59:56,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:59:56,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:59:56" (1/1) ... [2021-11-13 17:59:56,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:59:56" (1/1) ... [2021-11-13 17:59:56,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:59:56" (1/1) ... [2021-11-13 17:59:56,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:59:56" (1/1) ... [2021-11-13 17:59:56,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:59:56" (1/1) ... [2021-11-13 17:59:56,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:59:56" (1/1) ... [2021-11-13 17:59:56,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:59:56" (1/1) ... [2021-11-13 17:59:57,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:59:57,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:59:57,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:59:57,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:59:57,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:59:56" (1/1) ... [2021-11-13 17:59:57,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:59:57,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:59:57,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:59:57,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:59:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 17:59:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:59:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:59:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 17:59:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 17:59:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 17:59:57,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 17:59:57,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 17:59:57,141 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 17:59:57,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 17:59:57,142 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-13 17:59:57,142 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 17:59:57,142 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:59:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-13 17:59:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-13 17:59:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-13 17:59:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-13 17:59:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 17:59:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-13 17:59:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-13 17:59:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 17:59:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-13 17:59:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-13 17:59:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-13 17:59:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 17:59:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-13 17:59:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-13 17:59:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-13 17:59:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-13 17:59:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-13 17:59:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-13 17:59:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-13 17:59:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-13 17:59:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-13 17:59:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-13 17:59:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-13 17:59:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-13 17:59:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-13 17:59:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-13 17:59:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-13 17:59:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-13 17:59:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-13 17:59:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-13 17:59:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-13 17:59:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-13 17:59:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-13 17:59:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-13 17:59:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-13 17:59:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-13 17:59:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-13 17:59:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-13 17:59:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-13 17:59:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-13 17:59:57,151 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-13 17:59:57,151 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-13 17:59:57,152 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-13 17:59:57,152 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-13 17:59:57,153 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-13 17:59:57,154 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-13 17:59:57,154 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-13 17:59:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-13 17:59:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-13 17:59:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-13 17:59:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-13 17:59:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 17:59:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 17:59:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 17:59:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 17:59:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 17:59:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 17:59:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 17:59:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 17:59:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 17:59:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 17:59:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 17:59:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 17:59:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 17:59:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 17:59:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 17:59:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 17:59:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 17:59:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 17:59:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 17:59:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 17:59:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 17:59:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 17:59:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 17:59:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 17:59:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 17:59:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 17:59:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 17:59:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 17:59:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 17:59:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 17:59:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 17:59:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 17:59:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 17:59:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 17:59:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 17:59:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 17:59:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 17:59:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 17:59:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 17:59:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 17:59:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 17:59:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 17:59:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 17:59:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 17:59:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 17:59:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 17:59:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 17:59:57,165 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 17:59:57,165 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 17:59:57,165 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 17:59:57,165 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 17:59:57,166 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 17:59:57,166 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 17:59:57,167 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 17:59:57,167 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 17:59:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 17:59:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 17:59:57,171 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 17:59:57,172 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 17:59:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 17:59:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 17:59:57,174 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 17:59:57,174 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 17:59:57,175 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 17:59:57,181 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 17:59:57,181 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 17:59:57,181 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 17:59:57,181 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 17:59:57,182 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 17:59:57,182 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 17:59:57,182 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 17:59:57,182 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 17:59:57,182 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 17:59:57,182 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 17:59:57,182 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 17:59:57,183 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 17:59:57,183 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 17:59:57,183 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 17:59:57,183 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 17:59:57,183 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 17:59:57,183 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 17:59:57,184 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 17:59:57,184 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 17:59:57,184 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 17:59:57,184 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 17:59:57,184 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 17:59:57,184 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 17:59:57,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 17:59:57,185 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 17:59:57,185 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 17:59:57,185 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 17:59:57,185 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 17:59:57,185 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 17:59:57,185 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 17:59:57,186 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 17:59:57,186 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 17:59:57,186 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 17:59:57,186 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 17:59:57,186 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 17:59:57,186 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 17:59:57,186 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 17:59:57,187 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 17:59:57,187 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 17:59:57,187 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 17:59:57,187 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 17:59:57,187 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 17:59:57,199 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 17:59:57,199 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 17:59:57,199 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 17:59:57,199 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 17:59:57,199 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 17:59:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:59:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 17:59:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-13 17:59:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 17:59:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:59:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 17:59:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 17:59:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:59:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:59:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:59:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:59:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 17:59:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 17:59:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:59:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:59:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:59:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 17:59:57,830 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 18:00:00,854 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:00:00,859 INFO L299 CfgBuilder]: Removed 31 assume(true) statements. [2021-11-13 18:00:00,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:00:00 BoogieIcfgContainer [2021-11-13 18:00:00,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:00:00,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:00:00,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:00:00,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:00:00,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:59:55" (1/3) ... [2021-11-13 18:00:00,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f583bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:00:00, skipping insertion in model container [2021-11-13 18:00:00,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:59:56" (2/3) ... [2021-11-13 18:00:00,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f583bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:00:00, skipping insertion in model container [2021-11-13 18:00:00,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:00:00" (3/3) ... [2021-11-13 18:00:00,877 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test1-1.i [2021-11-13 18:00:00,884 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:00:00,884 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 330 error locations. [2021-11-13 18:00:00,948 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:00:00,959 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 [2021-11-13 18:00:00,959 INFO L340 AbstractCegarLoop]: Starting to check reachability of 330 error locations. [2021-11-13 18:00:00,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 676 states, 327 states have (on average 2.223241590214067) internal successors, (727), 664 states have internal predecessors, (727), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 18:00:01,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 18:00:01,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:01,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:01,006 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:00:01,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:01,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1974779480, now seen corresponding path program 1 times [2021-11-13 18:00:01,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:00:01,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263434106] [2021-11-13 18:00:01,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:01,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:00:01,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:00:01,029 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:00:01,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:00:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:01,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 18:00:01,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:01,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:01,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:01,348 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:00:01,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263434106] [2021-11-13 18:00:01,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263434106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:01,349 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:01,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:00:01,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816378959] [2021-11-13 18:00:01,352 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:01,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:00:01,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:00:01,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:00:01,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:00:01,394 INFO L87 Difference]: Start difference. First operand has 676 states, 327 states have (on average 2.223241590214067) internal successors, (727), 664 states have internal predecessors, (727), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) 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) [2021-11-13 18:00:01,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:01,529 INFO L93 Difference]: Finished difference Result 667 states and 714 transitions. [2021-11-13 18:00:01,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:00:01,537 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 [2021-11-13 18:00:01,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:01,567 INFO L225 Difference]: With dead ends: 667 [2021-11-13 18:00:01,567 INFO L226 Difference]: Without dead ends: 664 [2021-11-13 18:00:01,569 INFO L932 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 [2021-11-13 18:00:01,578 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:01,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 16.67ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:00:01,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-11-13 18:00:01,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 664. [2021-11-13 18:00:01,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 322 states have (on average 2.111801242236025) internal successors, (680), 653 states have internal predecessors, (680), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-13 18:00:01,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 711 transitions. [2021-11-13 18:00:01,672 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 711 transitions. Word has length 9 [2021-11-13 18:00:01,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:01,673 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 711 transitions. [2021-11-13 18:00:01,673 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) [2021-11-13 18:00:01,673 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 711 transitions. [2021-11-13 18:00:01,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 18:00:01,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:01,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:01,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:01,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:00:01,887 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:00:01,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:01,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1974779418, now seen corresponding path program 1 times [2021-11-13 18:00:01,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:00:01,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801819266] [2021-11-13 18:00:01,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:01,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:00:01,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:00:01,890 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:00:01,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:00:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:02,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:00:02,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:02,168 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 [2021-11-13 18:00:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:02,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:02,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:02,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:00:02,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801819266] [2021-11-13 18:00:02,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801819266] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:02,255 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:02,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:00:02,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700128052] [2021-11-13 18:00:02,255 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:02,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:00:02,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:00:02,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:00:02,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:02,257 INFO L87 Difference]: Start difference. First operand 664 states and 711 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) [2021-11-13 18:00:03,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:03,675 INFO L93 Difference]: Finished difference Result 622 states and 670 transitions. [2021-11-13 18:00:03,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:00:03,676 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 [2021-11-13 18:00:03,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:03,680 INFO L225 Difference]: With dead ends: 622 [2021-11-13 18:00:03,680 INFO L226 Difference]: Without dead ends: 622 [2021-11-13 18:00:03,681 INFO L932 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 [2021-11-13 18:00:03,682 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 574 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1110.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.10ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1370.54ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:03,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 405 Invalid, 397 Unknown, 0 Unchecked, 11.10ms Time], IncrementalHoareTripleChecker [54 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 1370.54ms Time] [2021-11-13 18:00:03,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-11-13 18:00:03,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 615. [2021-11-13 18:00:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 322 states have (on average 1.9596273291925466) internal successors, (631), 604 states have internal predecessors, (631), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-13 18:00:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 662 transitions. [2021-11-13 18:00:03,717 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 662 transitions. Word has length 9 [2021-11-13 18:00:03,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:03,717 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 662 transitions. [2021-11-13 18:00:03,717 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) [2021-11-13 18:00:03,718 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 662 transitions. [2021-11-13 18:00:03,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 18:00:03,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:03,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:03,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:03,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:00:03,929 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:00:03,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:03,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1974779417, now seen corresponding path program 1 times [2021-11-13 18:00:03,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:00:03,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202391775] [2021-11-13 18:00:03,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:03,931 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:00:03,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:00:03,932 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:00:03,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:00:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:04,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:00:04,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:04,168 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 [2021-11-13 18:00:04,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:04,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:04,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:04,277 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:00:04,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202391775] [2021-11-13 18:00:04,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202391775] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:04,278 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:04,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 18:00:04,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576270894] [2021-11-13 18:00:04,279 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:04,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:00:04,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:00:04,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:00:04,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:00:04,280 INFO L87 Difference]: Start difference. First operand 615 states and 662 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) [2021-11-13 18:00:07,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:07,205 INFO L93 Difference]: Finished difference Result 688 states and 739 transitions. [2021-11-13 18:00:07,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:00:07,206 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 [2021-11-13 18:00:07,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:07,210 INFO L225 Difference]: With dead ends: 688 [2021-11-13 18:00:07,210 INFO L226 Difference]: Without dead ends: 688 [2021-11-13 18:00:07,211 INFO L932 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 [2021-11-13 18:00:07,212 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 301 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2487.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.74ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2866.84ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:07,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 939 Invalid, 635 Unknown, 0 Unchecked, 14.74ms Time], IncrementalHoareTripleChecker [15 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 2866.84ms Time] [2021-11-13 18:00:07,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-11-13 18:00:07,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 637. [2021-11-13 18:00:07,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 354 states have (on average 1.9406779661016949) internal successors, (687), 626 states have internal predecessors, (687), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-13 18:00:07,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 718 transitions. [2021-11-13 18:00:07,242 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 718 transitions. Word has length 9 [2021-11-13 18:00:07,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:07,242 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 718 transitions. [2021-11-13 18:00:07,242 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) [2021-11-13 18:00:07,243 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 718 transitions. [2021-11-13 18:00:07,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 18:00:07,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:07,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:07,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:07,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:00:07,458 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr322REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:00:07,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:07,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1087799300, now seen corresponding path program 1 times [2021-11-13 18:00:07,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:00:07,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018596731] [2021-11-13 18:00:07,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:07,471 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:00:07,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:00:07,472 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:00:07,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:00:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:07,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:00:07,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:07,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:07,703 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:00:07,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018596731] [2021-11-13 18:00:07,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018596731] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:07,711 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:07,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:00:07,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322493806] [2021-11-13 18:00:07,712 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:07,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:00:07,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:00:07,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:00:07,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:00:07,716 INFO L87 Difference]: Start difference. First operand 637 states and 718 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) [2021-11-13 18:00:07,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:07,837 INFO L93 Difference]: Finished difference Result 1219 states and 1361 transitions. [2021-11-13 18:00:07,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:00:07,838 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 [2021-11-13 18:00:07,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:07,847 INFO L225 Difference]: With dead ends: 1219 [2021-11-13 18:00:07,847 INFO L226 Difference]: Without dead ends: 1219 [2021-11-13 18:00:07,848 INFO L932 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 [2021-11-13 18:00:07,852 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 1138 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.20ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 87.89ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:07,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1144 Valid, 1371 Invalid, 16 Unknown, 0 Unchecked, 6.20ms Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 87.89ms Time] [2021-11-13 18:00:07,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2021-11-13 18:00:07,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 959. [2021-11-13 18:00:07,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 676 states have (on average 1.9585798816568047) internal successors, (1324), 945 states have internal predecessors, (1324), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 18:00:07,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1361 transitions. [2021-11-13 18:00:07,923 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1361 transitions. Word has length 10 [2021-11-13 18:00:07,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:07,923 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 1361 transitions. [2021-11-13 18:00:07,924 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) [2021-11-13 18:00:07,924 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1361 transitions. [2021-11-13 18:00:07,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 18:00:07,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:07,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:07,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:08,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:00:08,138 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:00:08,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:08,140 INFO L85 PathProgramCache]: Analyzing trace with hash 548999728, now seen corresponding path program 1 times [2021-11-13 18:00:08,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:00:08,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929704131] [2021-11-13 18:00:08,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:08,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:00:08,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:00:08,142 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:00:08,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:00:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:08,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:00:08,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:08,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:08,430 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:00:08,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929704131] [2021-11-13 18:00:08,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929704131] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:08,431 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:08,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:00:08,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552078726] [2021-11-13 18:00:08,431 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:08,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:00:08,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:00:08,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:00:08,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:00:08,434 INFO L87 Difference]: Start difference. First operand 959 states and 1361 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) [2021-11-13 18:00:08,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:08,483 INFO L93 Difference]: Finished difference Result 899 states and 1275 transitions. [2021-11-13 18:00:08,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:00:08,484 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 [2021-11-13 18:00:08,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:08,492 INFO L225 Difference]: With dead ends: 899 [2021-11-13 18:00:08,492 INFO L226 Difference]: Without dead ends: 899 [2021-11-13 18:00:08,492 INFO L932 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 [2021-11-13 18:00:08,493 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 1082 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.51ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.08ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:08,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 673 Invalid, 16 Unknown, 0 Unchecked, 4.51ms Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 26.08ms Time] [2021-11-13 18:00:08,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-11-13 18:00:08,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2021-11-13 18:00:08,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 640 states have (on average 1.934375) internal successors, (1238), 885 states have internal predecessors, (1238), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 18:00:08,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1275 transitions. [2021-11-13 18:00:08,530 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1275 transitions. Word has length 15 [2021-11-13 18:00:08,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:08,531 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1275 transitions. [2021-11-13 18:00:08,531 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) [2021-11-13 18:00:08,531 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1275 transitions. [2021-11-13 18:00:08,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 18:00:08,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:08,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:08,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-13 18:00:08,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:00:08,744 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr28REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:00:08,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:08,745 INFO L85 PathProgramCache]: Analyzing trace with hash -692239478, now seen corresponding path program 1 times [2021-11-13 18:00:08,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:00:08,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706355438] [2021-11-13 18:00:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:08,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:00:08,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:00:08,746 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:00:08,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:00:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:08,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:00:08,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:08,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:08,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:08,984 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:00:08,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706355438] [2021-11-13 18:00:08,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706355438] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:08,984 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:08,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 18:00:08,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022261144] [2021-11-13 18:00:08,985 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:08,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:00:08,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:00:08,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:00:08,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:00:08,986 INFO L87 Difference]: Start difference. First operand 899 states and 1275 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) [2021-11-13 18:00:09,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:09,065 INFO L93 Difference]: Finished difference Result 871 states and 1219 transitions. [2021-11-13 18:00:09,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:00:09,066 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 [2021-11-13 18:00:09,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:09,072 INFO L225 Difference]: With dead ends: 871 [2021-11-13 18:00:09,072 INFO L226 Difference]: Without dead ends: 871 [2021-11-13 18:00:09,072 INFO L932 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 [2021-11-13 18:00:09,073 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 512 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.94ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.26ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:09,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 1250 Invalid, 64 Unknown, 0 Unchecked, 4.94ms Time], IncrementalHoareTripleChecker [32 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 47.26ms Time] [2021-11-13 18:00:09,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2021-11-13 18:00:09,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 869. [2021-11-13 18:00:09,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 624 states have (on average 1.891025641025641) internal successors, (1180), 855 states have internal predecessors, (1180), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 18:00:09,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1217 transitions. [2021-11-13 18:00:09,102 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1217 transitions. Word has length 17 [2021-11-13 18:00:09,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:09,103 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1217 transitions. [2021-11-13 18:00:09,103 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) [2021-11-13 18:00:09,103 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1217 transitions. [2021-11-13 18:00:09,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 18:00:09,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:09,105 INFO L514 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] [2021-11-13 18:00:09,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-13 18:00:09,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:00:09,317 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:00:09,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:09,317 INFO L85 PathProgramCache]: Analyzing trace with hash 460749560, now seen corresponding path program 1 times [2021-11-13 18:00:09,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:00:09,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085690742] [2021-11-13 18:00:09,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:09,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:00:09,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:00:09,318 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:00:09,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:00:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:09,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:00:09,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:09,515 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 [2021-11-13 18:00:09,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:09,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:09,733 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:00:09,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085690742] [2021-11-13 18:00:09,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085690742] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:09,733 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:09,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:00:09,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463749746] [2021-11-13 18:00:09,734 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:09,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:00:09,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:00:09,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:00:09,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:00:09,735 INFO L87 Difference]: Start difference. First operand 869 states and 1217 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) [2021-11-13 18:00:11,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:11,184 INFO L93 Difference]: Finished difference Result 898 states and 1244 transitions. [2021-11-13 18:00:11,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:00:11,185 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 [2021-11-13 18:00:11,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:11,192 INFO L225 Difference]: With dead ends: 898 [2021-11-13 18:00:11,192 INFO L226 Difference]: Without dead ends: 898 [2021-11-13 18:00:11,192 INFO L932 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 [2021-11-13 18:00:11,193 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 894 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1186.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.96ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1395.18ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:11,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 456 Invalid, 386 Unknown, 0 Unchecked, 8.96ms Time], IncrementalHoareTripleChecker [23 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 1395.18ms Time] [2021-11-13 18:00:11,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2021-11-13 18:00:11,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 865. [2021-11-13 18:00:11,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 624 states have (on average 1.8782051282051282) internal successors, (1172), 851 states have internal predecessors, (1172), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 18:00:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1209 transitions. [2021-11-13 18:00:11,224 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1209 transitions. Word has length 31 [2021-11-13 18:00:11,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:11,225 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 1209 transitions. [2021-11-13 18:00:11,225 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) [2021-11-13 18:00:11,225 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1209 transitions. [2021-11-13 18:00:11,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 18:00:11,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:11,226 INFO L514 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] [2021-11-13 18:00:11,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:11,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:00:11,437 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:00:11,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:11,437 INFO L85 PathProgramCache]: Analyzing trace with hash 460749561, now seen corresponding path program 1 times [2021-11-13 18:00:11,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:00:11,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138038138] [2021-11-13 18:00:11,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:11,438 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:00:11,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:00:11,439 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:00:11,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:00:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:11,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:00:11,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:11,642 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 [2021-11-13 18:00:11,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:11,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:12,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:12,353 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:00:12,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138038138] [2021-11-13 18:00:12,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138038138] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:12,353 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:12,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:00:12,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982545322] [2021-11-13 18:00:12,354 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:12,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:00:12,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:00:12,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:00:12,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:00:12,357 INFO L87 Difference]: Start difference. First operand 865 states and 1209 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) [2021-11-13 18:00:16,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:16,672 INFO L93 Difference]: Finished difference Result 945 states and 1262 transitions. [2021-11-13 18:00:16,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:00:16,674 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 [2021-11-13 18:00:16,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:16,680 INFO L225 Difference]: With dead ends: 945 [2021-11-13 18:00:16,681 INFO L226 Difference]: Without dead ends: 945 [2021-11-13 18:00:16,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:00:16,682 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 588 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3725.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.84ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4157.22ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:16,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 1130 Invalid, 849 Unknown, 0 Unchecked, 8.84ms Time], IncrementalHoareTripleChecker [16 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 4157.22ms Time] [2021-11-13 18:00:16,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2021-11-13 18:00:16,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 861. [2021-11-13 18:00:16,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 624 states have (on average 1.8653846153846154) internal successors, (1164), 847 states have internal predecessors, (1164), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 18:00:16,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1201 transitions. [2021-11-13 18:00:16,712 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1201 transitions. Word has length 31 [2021-11-13 18:00:16,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:16,714 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 1201 transitions. [2021-11-13 18:00:16,715 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) [2021-11-13 18:00:16,715 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1201 transitions. [2021-11-13 18:00:16,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 18:00:16,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:16,721 INFO L514 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] [2021-11-13 18:00:16,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:16,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:00:16,931 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:00:16,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:16,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1828330934, now seen corresponding path program 1 times [2021-11-13 18:00:16,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:00:16,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553303367] [2021-11-13 18:00:16,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:16,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:00:16,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:00:16,934 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:00:16,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 18:00:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:17,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:00:17,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:17,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:17,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:17,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:00:17,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553303367] [2021-11-13 18:00:17,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553303367] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:17,450 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:17,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:00:17,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619194766] [2021-11-13 18:00:17,451 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:17,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:00:17,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:00:17,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:00:17,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:00:17,452 INFO L87 Difference]: Start difference. First operand 861 states and 1201 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) [2021-11-13 18:00:17,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:17,512 INFO L93 Difference]: Finished difference Result 849 states and 1181 transitions. [2021-11-13 18:00:17,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:00:17,513 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 [2021-11-13 18:00:17,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:17,520 INFO L225 Difference]: With dead ends: 849 [2021-11-13 18:00:17,520 INFO L226 Difference]: Without dead ends: 849 [2021-11-13 18:00:17,521 INFO L932 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 [2021-11-13 18:00:17,523 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 488 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.13ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.46ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:17,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 1159 Invalid, 41 Unknown, 0 Unchecked, 2.13ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 39.46ms Time] [2021-11-13 18:00:17,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-11-13 18:00:17,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2021-11-13 18:00:17,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 612 states have (on average 1.869281045751634) internal successors, (1144), 835 states have internal predecessors, (1144), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 18:00:17,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1181 transitions. [2021-11-13 18:00:17,562 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1181 transitions. Word has length 46 [2021-11-13 18:00:17,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:17,562 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 1181 transitions. [2021-11-13 18:00:17,563 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) [2021-11-13 18:00:17,567 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1181 transitions. [2021-11-13 18:00:17,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-13 18:00:17,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:17,573 INFO L514 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] [2021-11-13 18:00:17,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:17,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:00:17,787 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:00:17,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:17,787 INFO L85 PathProgramCache]: Analyzing trace with hash -850731138, now seen corresponding path program 1 times [2021-11-13 18:00:17,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:00:17,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17828932] [2021-11-13 18:00:17,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:17,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:00:17,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:00:17,790 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:00:17,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 18:00:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:18,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:00:18,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:18,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:18,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:18,783 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:00:18,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17828932] [2021-11-13 18:00:18,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17828932] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:18,784 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:18,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:00:18,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248367397] [2021-11-13 18:00:18,784 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:18,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:00:18,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:00:18,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:00:18,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:18,785 INFO L87 Difference]: Start difference. First operand 849 states and 1181 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) [2021-11-13 18:00:18,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:18,885 INFO L93 Difference]: Finished difference Result 799 states and 1076 transitions. [2021-11-13 18:00:18,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:00:18,886 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 [2021-11-13 18:00:18,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:18,891 INFO L225 Difference]: With dead ends: 799 [2021-11-13 18:00:18,892 INFO L226 Difference]: Without dead ends: 799 [2021-11-13 18:00:18,892 INFO L932 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 [2021-11-13 18:00:18,893 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 67 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.57ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.43ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:18,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1026 Invalid, 29 Unknown, 0 Unchecked, 1.57ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 88.43ms Time] [2021-11-13 18:00:18,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2021-11-13 18:00:18,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 799. [2021-11-13 18:00:18,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 562 states have (on average 1.8487544483985765) internal successors, (1039), 785 states have internal predecessors, (1039), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 18:00:18,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1076 transitions. [2021-11-13 18:00:18,920 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1076 transitions. Word has length 54 [2021-11-13 18:00:18,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:18,922 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1076 transitions. [2021-11-13 18:00:18,922 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) [2021-11-13 18:00:18,922 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1076 transitions. [2021-11-13 18:00:18,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-13 18:00:18,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:18,924 INFO L514 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] [2021-11-13 18:00:18,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:19,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:00:19,139 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:00:19,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:19,140 INFO L85 PathProgramCache]: Analyzing trace with hash 363306019, now seen corresponding path program 1 times [2021-11-13 18:00:19,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:00:19,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379514273] [2021-11-13 18:00:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:19,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:00:19,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:00:19,142 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:00:19,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 18:00:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:19,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:00:19,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:19,491 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 [2021-11-13 18:00:19,500 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 [2021-11-13 18:00:20,166 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 18:00:20,167 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 27 treesize of output 29 [2021-11-13 18:00:20,176 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 18:00:20,176 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 26 treesize of output 22 [2021-11-13 18:00:20,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:20,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:25,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:25,089 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:00:25,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379514273] [2021-11-13 18:00:25,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379514273] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:25,089 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:25,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:00:25,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214313347] [2021-11-13 18:00:25,090 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:25,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:00:25,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:00:25,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:00:25,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 18:00:25,092 INFO L87 Difference]: Start difference. First operand 799 states and 1076 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) [2021-11-13 18:00:28,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:28,512 INFO L93 Difference]: Finished difference Result 970 states and 1192 transitions. [2021-11-13 18:00:28,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:00:28,513 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 [2021-11-13 18:00:28,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:28,520 INFO L225 Difference]: With dead ends: 970 [2021-11-13 18:00:28,520 INFO L226 Difference]: Without dead ends: 970 [2021-11-13 18:00:28,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 18:00:28,521 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 987 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2908.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.96ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 718 IncrementalHoareTripleChecker+Unchecked, 3368.52ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:28,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [991 Valid, 748 Invalid, 1468 Unknown, 0 Unchecked, 9.96ms Time], IncrementalHoareTripleChecker [43 Valid, 707 Invalid, 0 Unknown, 718 Unchecked, 3368.52ms Time] [2021-11-13 18:00:28,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2021-11-13 18:00:28,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 780. [2021-11-13 18:00:28,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 575 states have (on average 1.7373913043478262) internal successors, (999), 766 states have internal predecessors, (999), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 18:00:28,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1036 transitions. [2021-11-13 18:00:28,548 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1036 transitions. Word has length 57 [2021-11-13 18:00:28,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:28,548 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 1036 transitions. [2021-11-13 18:00:28,549 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) [2021-11-13 18:00:28,549 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1036 transitions. [2021-11-13 18:00:28,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 18:00:28,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:28,550 INFO L514 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] [2021-11-13 18:00:28,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:28,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:00:28,765 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr63REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:00:28,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:28,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1244743876, now seen corresponding path program 1 times [2021-11-13 18:00:28,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:00:28,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584237424] [2021-11-13 18:00:28,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:28,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:00:28,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:00:28,768 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:00:28,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 18:00:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:29,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:00:29,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:29,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:29,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:29,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-11-13 18:00:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:29,643 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:00:29,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584237424] [2021-11-13 18:00:29,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584237424] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:29,644 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:29,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:00:29,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719240171] [2021-11-13 18:00:29,644 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:29,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:00:29,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:00:29,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:00:29,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:00:29,645 INFO L87 Difference]: Start difference. First operand 780 states and 1036 transitions. Second operand has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 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) [2021-11-13 18:00:31,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:31,127 INFO L93 Difference]: Finished difference Result 778 states and 1032 transitions. [2021-11-13 18:00:31,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:00:31,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 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 59 [2021-11-13 18:00:31,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:31,133 INFO L225 Difference]: With dead ends: 778 [2021-11-13 18:00:31,133 INFO L226 Difference]: Without dead ends: 778 [2021-11-13 18:00:31,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:00:31,134 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 442 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1255.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.76ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1455.34ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:31,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 563 Invalid, 311 Unknown, 0 Unchecked, 4.76ms Time], IncrementalHoareTripleChecker [9 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 1455.34ms Time] [2021-11-13 18:00:31,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-11-13 18:00:31,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 778. [2021-11-13 18:00:31,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 575 states have (on average 1.7304347826086957) internal successors, (995), 764 states have internal predecessors, (995), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 18:00:31,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1032 transitions. [2021-11-13 18:00:31,158 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1032 transitions. Word has length 59 [2021-11-13 18:00:31,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:31,159 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 1032 transitions. [2021-11-13 18:00:31,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 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) [2021-11-13 18:00:31,160 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1032 transitions. [2021-11-13 18:00:31,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 18:00:31,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:31,161 INFO L514 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] [2021-11-13 18:00:31,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:31,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:00:31,374 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:00:31,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:31,375 INFO L85 PathProgramCache]: Analyzing trace with hash -582487087, now seen corresponding path program 1 times [2021-11-13 18:00:31,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:00:31,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357908849] [2021-11-13 18:00:31,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:31,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:00:31,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:00:31,377 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:00:31,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 18:00:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:31,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:00:31,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:31,754 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 [2021-11-13 18:00:31,766 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 [2021-11-13 18:00:31,807 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 [2021-11-13 18:00:31,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:31,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:31,942 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:00:31,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357908849] [2021-11-13 18:00:31,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357908849] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:31,942 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:31,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:00:31,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035415834] [2021-11-13 18:00:31,942 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:31,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:00:31,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:00:31,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:00:31,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:00:31,943 INFO L87 Difference]: Start difference. First operand 778 states and 1032 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) [2021-11-13 18:00:33,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:33,848 INFO L93 Difference]: Finished difference Result 777 states and 1030 transitions. [2021-11-13 18:00:33,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:00:33,849 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 [2021-11-13 18:00:33,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:33,854 INFO L225 Difference]: With dead ends: 777 [2021-11-13 18:00:33,854 INFO L226 Difference]: Without dead ends: 777 [2021-11-13 18:00:33,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:00:33,855 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 4 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1590.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.26ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1849.99ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:33,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1367 Invalid, 731 Unknown, 0 Unchecked, 5.26ms Time], IncrementalHoareTripleChecker [1 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 1849.99ms Time] [2021-11-13 18:00:33,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-11-13 18:00:33,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 777. [2021-11-13 18:00:33,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 575 states have (on average 1.7269565217391305) internal successors, (993), 763 states have internal predecessors, (993), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 18:00:33,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1030 transitions. [2021-11-13 18:00:33,878 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1030 transitions. Word has length 62 [2021-11-13 18:00:33,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:33,878 INFO L470 AbstractCegarLoop]: Abstraction has 777 states and 1030 transitions. [2021-11-13 18:00:33,879 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) [2021-11-13 18:00:33,879 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1030 transitions. [2021-11-13 18:00:33,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 18:00:33,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:33,880 INFO L514 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] [2021-11-13 18:00:33,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-13 18:00:34,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:00:34,095 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:00:34,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:34,096 INFO L85 PathProgramCache]: Analyzing trace with hash -582487086, now seen corresponding path program 1 times [2021-11-13 18:00:34,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:00:34,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109736235] [2021-11-13 18:00:34,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:34,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:00:34,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:00:34,098 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:00:34,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 18:00:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:34,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:00:34,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:34,449 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 [2021-11-13 18:00:34,476 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 [2021-11-13 18:00:34,487 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 [2021-11-13 18:00:34,568 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 [2021-11-13 18:00:34,572 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 [2021-11-13 18:00:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:34,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:35,005 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:00:35,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109736235] [2021-11-13 18:00:35,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109736235] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:35,006 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:35,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 18:00:35,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646413780] [2021-11-13 18:00:35,006 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:35,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:00:35,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:00:35,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:00:35,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:00:35,008 INFO L87 Difference]: Start difference. First operand 777 states and 1030 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) [2021-11-13 18:00:41,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:41,471 INFO L93 Difference]: Finished difference Result 776 states and 1028 transitions. [2021-11-13 18:00:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:00:41,472 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 [2021-11-13 18:00:41,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:41,476 INFO L225 Difference]: With dead ends: 776 [2021-11-13 18:00:41,476 INFO L226 Difference]: Without dead ends: 776 [2021-11-13 18:00:41,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:00:41,477 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 2 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5683.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.37ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6363.35ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:41,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2215 Invalid, 1450 Unknown, 0 Unchecked, 10.37ms Time], IncrementalHoareTripleChecker [1 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 6363.35ms Time] [2021-11-13 18:00:41,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-11-13 18:00:41,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 776. [2021-11-13 18:00:41,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 573 states have (on average 1.7294938917975566) internal successors, (991), 762 states have internal predecessors, (991), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 18:00:41,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1028 transitions. [2021-11-13 18:00:41,499 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1028 transitions. Word has length 62 [2021-11-13 18:00:41,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:41,499 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 1028 transitions. [2021-11-13 18:00:41,500 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) [2021-11-13 18:00:41,500 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1028 transitions. [2021-11-13 18:00:41,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 18:00:41,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:41,501 INFO L514 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] [2021-11-13 18:00:41,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-13 18:00:41,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:00:41,734 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:00:41,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:41,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1992122424, now seen corresponding path program 1 times [2021-11-13 18:00:41,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:00:41,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169291445] [2021-11-13 18:00:41,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:41,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:00:41,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:00:41,737 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:00:41,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 18:00:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:42,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:00:42,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:42,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:42,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:42,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:00:42,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169291445] [2021-11-13 18:00:42,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169291445] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:42,288 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:42,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:00:42,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791343616] [2021-11-13 18:00:42,288 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:42,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:00:42,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:00:42,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:00:42,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:00:42,290 INFO L87 Difference]: Start difference. First operand 776 states and 1028 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) [2021-11-13 18:00:42,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:42,389 INFO L93 Difference]: Finished difference Result 786 states and 1042 transitions. [2021-11-13 18:00:42,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:00:42,390 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 [2021-11-13 18:00:42,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:42,396 INFO L225 Difference]: With dead ends: 786 [2021-11-13 18:00:42,396 INFO L226 Difference]: Without dead ends: 786 [2021-11-13 18:00:42,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:00:42,398 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 9 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.66ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.42ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:42,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1564 Invalid, 34 Unknown, 0 Unchecked, 1.66ms Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 72.42ms Time] [2021-11-13 18:00:42,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2021-11-13 18:00:42,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 786. [2021-11-13 18:00:42,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 581 states have (on average 1.7263339070567987) internal successors, (1003), 771 states have internal predecessors, (1003), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-13 18:00:42,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1042 transitions. [2021-11-13 18:00:42,426 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1042 transitions. Word has length 70 [2021-11-13 18:00:42,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:42,426 INFO L470 AbstractCegarLoop]: Abstraction has 786 states and 1042 transitions. [2021-11-13 18:00:42,427 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) [2021-11-13 18:00:42,427 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1042 transitions. [2021-11-13 18:00:42,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 18:00:42,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:42,428 INFO L514 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] [2021-11-13 18:00:42,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:42,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:00:42,644 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:00:42,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:42,645 INFO L85 PathProgramCache]: Analyzing trace with hash -616502664, now seen corresponding path program 1 times [2021-11-13 18:00:42,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:00:42,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443649278] [2021-11-13 18:00:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:42,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:00:42,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:00:42,646 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:00:42,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 18:00:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:42,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:00:42,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:43,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:43,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:43,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:00:43,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443649278] [2021-11-13 18:00:43,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443649278] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:00:43,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:00:43,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 18:00:43,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012128153] [2021-11-13 18:00:43,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:00:43,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:00:43,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:00:43,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:00:43,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:00:43,286 INFO L87 Difference]: Start difference. First operand 786 states and 1042 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) [2021-11-13 18:00:43,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:43,687 INFO L93 Difference]: Finished difference Result 800 states and 1062 transitions. [2021-11-13 18:00:43,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:00:43,688 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 [2021-11-13 18:00:43,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:43,692 INFO L225 Difference]: With dead ends: 800 [2021-11-13 18:00:43,692 INFO L226 Difference]: Without dead ends: 796 [2021-11-13 18:00:43,693 INFO L932 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 [2021-11-13 18:00:43,694 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 30 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 173.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.67ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 198.04ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:43,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 2608 Invalid, 109 Unknown, 0 Unchecked, 2.67ms Time], IncrementalHoareTripleChecker [17 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 198.04ms Time] [2021-11-13 18:00:43,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-11-13 18:00:43,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 792. [2021-11-13 18:00:43,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 587 states have (on average 1.7223168654173764) internal successors, (1011), 777 states have internal predecessors, (1011), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-13 18:00:43,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1050 transitions. [2021-11-13 18:00:43,721 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1050 transitions. Word has length 72 [2021-11-13 18:00:43,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:43,721 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 1050 transitions. [2021-11-13 18:00:43,722 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) [2021-11-13 18:00:43,722 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1050 transitions. [2021-11-13 18:00:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 18:00:43,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:43,723 INFO L514 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] [2021-11-13 18:00:43,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:43,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:00:43,938 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:00:43,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:43,939 INFO L85 PathProgramCache]: Analyzing trace with hash 876564216, now seen corresponding path program 2 times [2021-11-13 18:00:43,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:00:43,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084809144] [2021-11-13 18:00:43,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:00:43,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:00:43,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:00:43,941 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:00:43,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 18:00:44,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:00:44,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:00:44,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 18:00:44,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:44,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:45,088 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:45,090 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:00:45,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084809144] [2021-11-13 18:00:45,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084809144] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:00:45,090 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:00:45,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-13 18:00:45,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059775126] [2021-11-13 18:00:45,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:00:45,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:00:45,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:00:45,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:00:45,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:00:45,093 INFO L87 Difference]: Start difference. First operand 792 states and 1050 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) [2021-11-13 18:00:46,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:46,720 INFO L93 Difference]: Finished difference Result 820 states and 1094 transitions. [2021-11-13 18:00:46,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 18:00:46,722 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 [2021-11-13 18:00:46,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:46,728 INFO L225 Difference]: With dead ends: 820 [2021-11-13 18:00:46,728 INFO L226 Difference]: Without dead ends: 816 [2021-11-13 18:00:46,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-13 18:00:46,729 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 78 mSDsluCounter, 4196 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 552.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 4725 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.32ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 653.09ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:46,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 4725 Invalid, 366 Unknown, 0 Unchecked, 5.32ms Time], IncrementalHoareTripleChecker [57 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 653.09ms Time] [2021-11-13 18:00:46,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2021-11-13 18:00:46,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 804. [2021-11-13 18:00:46,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 599 states have (on average 1.7145242070116862) internal successors, (1027), 789 states have internal predecessors, (1027), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-13 18:00:46,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1066 transitions. [2021-11-13 18:00:46,755 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1066 transitions. Word has length 76 [2021-11-13 18:00:46,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:46,756 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1066 transitions. [2021-11-13 18:00:46,756 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) [2021-11-13 18:00:46,756 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1066 transitions. [2021-11-13 18:00:46,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 18:00:46,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:46,758 INFO L514 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] [2021-11-13 18:00:46,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-13 18:00:46,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:00:46,971 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:00:46,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:46,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1089906696, now seen corresponding path program 3 times [2021-11-13 18:00:46,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:00:46,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173035944] [2021-11-13 18:00:46,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:00:46,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:00:46,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:00:46,974 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:00:47,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 18:00:47,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 18:00:47,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:00:47,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 18:00:47,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:48,387 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:48,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:50,427 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:50,427 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:00:50,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173035944] [2021-11-13 18:00:50,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173035944] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:00:50,427 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:00:50,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-13 18:00:50,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108461515] [2021-11-13 18:00:50,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:00:50,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-13 18:00:50,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:00:50,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-13 18:00:50,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 18:00:50,430 INFO L87 Difference]: Start difference. First operand 804 states and 1066 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) [2021-11-13 18:00:59,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:59,269 INFO L93 Difference]: Finished difference Result 860 states and 1170 transitions. [2021-11-13 18:00:59,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-13 18:00:59,270 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 [2021-11-13 18:00:59,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:59,276 INFO L225 Difference]: With dead ends: 860 [2021-11-13 18:00:59,277 INFO L226 Difference]: Without dead ends: 854 [2021-11-13 18:00:59,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-13 18:00:59,280 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 261 mSDsluCounter, 7982 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2343.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 8518 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.85ms SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2692.21ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:59,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 8518 Invalid, 1410 Unknown, 0 Unchecked, 15.85ms Time], IncrementalHoareTripleChecker [179 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 2692.21ms Time] [2021-11-13 18:00:59,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-11-13 18:00:59,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 828. [2021-11-13 18:00:59,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 623 states have (on average 1.6982343499197432) internal successors, (1058), 813 states have internal predecessors, (1058), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-13 18:00:59,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1097 transitions. [2021-11-13 18:00:59,312 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1097 transitions. Word has length 84 [2021-11-13 18:00:59,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:59,313 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 1097 transitions. [2021-11-13 18:00:59,313 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) [2021-11-13 18:00:59,313 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1097 transitions. [2021-11-13 18:00:59,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-13 18:00:59,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:59,314 INFO L514 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] [2021-11-13 18:00:59,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-13 18:00:59,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:00:59,532 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:00:59,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:59,533 INFO L85 PathProgramCache]: Analyzing trace with hash -145593864, now seen corresponding path program 4 times [2021-11-13 18:00:59,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:00:59,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458244477] [2021-11-13 18:00:59,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:00:59,535 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:00:59,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:00:59,536 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:00:59,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 18:00:59,917 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:00:59,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:00:59,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-13 18:00:59,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:01:01,177 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:01,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:01:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:05,532 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:01:05,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458244477] [2021-11-13 18:01:05,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458244477] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:01:05,532 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:01:05,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-13 18:01:05,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150403322] [2021-11-13 18:01:05,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:01:05,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-13 18:01:05,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:01:05,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-13 18:01:05,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-13 18:01:05,536 INFO L87 Difference]: Start difference. First operand 828 states and 1097 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) [2021-11-13 18:01:19,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:01:19,431 INFO L93 Difference]: Finished difference Result 920 states and 1246 transitions. [2021-11-13 18:01:19,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-13 18:01:19,433 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 [2021-11-13 18:01:19,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:01:19,438 INFO L225 Difference]: With dead ends: 920 [2021-11-13 18:01:19,439 INFO L226 Difference]: Without dead ends: 916 [2021-11-13 18:01:19,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-13 18:01:19,446 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 267 mSDsluCounter, 16992 mSDsCounter, 0 mSdLazyCounter, 3989 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6292.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 17544 SdHoareTripleChecker+Invalid, 4488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.79ms SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 3989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7183.35ms IncrementalHoareTripleChecker+Time [2021-11-13 18:01:19,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 17544 Invalid, 4488 Unknown, 0 Unchecked, 33.79ms Time], IncrementalHoareTripleChecker [499 Valid, 3989 Invalid, 0 Unknown, 0 Unchecked, 7183.35ms Time] [2021-11-13 18:01:19,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2021-11-13 18:01:19,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 858. [2021-11-13 18:01:19,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 653 states have (on average 1.6906584992343032) internal successors, (1104), 843 states have internal predecessors, (1104), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-13 18:01:19,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1143 transitions. [2021-11-13 18:01:19,478 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1143 transitions. Word has length 100 [2021-11-13 18:01:19,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:01:19,478 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 1143 transitions. [2021-11-13 18:01:19,478 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) [2021-11-13 18:01:19,479 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1143 transitions. [2021-11-13 18:01:19,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-13 18:01:19,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:01:19,480 INFO L514 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] [2021-11-13 18:01:19,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 18:01:19,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:01:19,696 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 18:01:19,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:19,696 INFO L85 PathProgramCache]: Analyzing trace with hash 841634232, now seen corresponding path program 5 times [2021-11-13 18:01:19,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:01:19,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611579072] [2021-11-13 18:01:19,697 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:01:19,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:01:19,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:01:19,700 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:01:19,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 18:01:21,001 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-13 18:01:21,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:01:21,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-13 18:01:21,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:01:21,074 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 [2021-11-13 18:01:21,313 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-13 18:01:21,314 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 21 treesize of output 28 [2021-11-13 18:01:21,381 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 [2021-11-13 18:01:21,591 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 48 treesize of output 36 [2021-11-13 18:10:46,370 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-13 18:10:46,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:10:46,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611579072] [2021-11-13 18:10:46,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-13 18:10:46,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1972497115] [2021-11-13 18:10:46,372 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:10:46,372 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 18:10:46,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/cvc4 [2021-11-13 18:10:46,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-13 18:10:46,387 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 18:10:46,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-13 18:12:03,345 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-13 18:12:03,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:12:03,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-13 18:12:03,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:12:03,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-13 18:12:03,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054551507] [2021-11-13 18:12:03,593 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:12:03,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:12:03,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:12:03,594 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:12:03,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef77c72-2b75-450f-abf8-73e2bdc5661a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process