./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.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_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/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_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/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_a8bdfb2a-10af-473b-87a7-a9246bb478b7/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 5eef0a1d7c251abc753eabb723fe850489bfd10ab147ced1a31e6821eaf88c98 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:06:09,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:06:09,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:06:09,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:06:09,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:06:09,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:06:09,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:06:09,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:06:09,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:06:09,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:06:09,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:06:09,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:06:09,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:06:09,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:06:09,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:06:09,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:06:09,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:06:09,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:06:09,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:06:09,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:06:09,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:06:09,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:06:09,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:06:09,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:06:09,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:06:09,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:06:09,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:06:09,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:06:09,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:06:09,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:06:09,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:06:09,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:06:09,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:06:09,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:06:09,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:06:09,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:06:09,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:06:09,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:06:09,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:06:09,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:06:09,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:06:09,868 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 18:06:09,913 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:06:09,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:06:09,915 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:06:09,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:06:09,916 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:06:09,916 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:06:09,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:06:09,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:06:09,918 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:06:09,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:06:09,920 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:06:09,920 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:06:09,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:06:09,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:06:09,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:06:09,921 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:06:09,922 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:06:09,922 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:06:09,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:06:09,922 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:06:09,922 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:06:09,923 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:06:09,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:06:09,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:06:09,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:06:09,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:06:09,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:06:09,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:06:09,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:06:09,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:06:09,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:06:09,927 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_a8bdfb2a-10af-473b-87a7-a9246bb478b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eef0a1d7c251abc753eabb723fe850489bfd10ab147ced1a31e6821eaf88c98 [2021-11-13 18:06:10,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:06:10,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:06:10,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:06:10,323 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:06:10,324 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:06:10,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i [2021-11-13 18:06:10,401 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/data/439fcda6b/4f4a7abe0d8a472990f5426f44039b62/FLAG241395936 [2021-11-13 18:06:11,135 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:06:11,138 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i [2021-11-13 18:06:11,164 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/data/439fcda6b/4f4a7abe0d8a472990f5426f44039b62/FLAG241395936 [2021-11-13 18:06:11,334 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/data/439fcda6b/4f4a7abe0d8a472990f5426f44039b62 [2021-11-13 18:06:11,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:06:11,338 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:06:11,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:06:11,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:06:11,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:06:11,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:06:11" (1/1) ... [2021-11-13 18:06:11,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1380c283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:11, skipping insertion in model container [2021-11-13 18:06:11,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:06:11" (1/1) ... [2021-11-13 18:06:11,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:06:11,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:06:11,985 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_a8bdfb2a-10af-473b-87a7-a9246bb478b7/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i[33021,33034] [2021-11-13 18:06:12,168 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_a8bdfb2a-10af-473b-87a7-a9246bb478b7/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i[45234,45247] [2021-11-13 18:06:12,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:06:12,207 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 18:06:12,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@791cd64e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:12, skipping insertion in model container [2021-11-13 18:06:12,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:06:12,216 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 18:06:12,218 INFO L158 Benchmark]: Toolchain (without parser) took 879.34ms. Allocated memory is still 109.1MB. Free memory was 64.4MB in the beginning and 71.1MB in the end (delta: -6.7MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2021-11-13 18:06:12,220 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 109.1MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:06:12,221 INFO L158 Benchmark]: CACSL2BoogieTranslator took 876.06ms. Allocated memory is still 109.1MB. Free memory was 64.2MB in the beginning and 71.1MB in the end (delta: -6.8MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2021-11-13 18:06:12,225 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 109.1MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 876.06ms. Allocated memory is still 109.1MB. Free memory was 64.2MB in the beginning and 71.1MB in the end (delta: -6.8MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: 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_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/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_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/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_a8bdfb2a-10af-473b-87a7-a9246bb478b7/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 5eef0a1d7c251abc753eabb723fe850489bfd10ab147ced1a31e6821eaf88c98 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:06:14,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:06:14,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:06:14,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:06:14,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:06:14,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:06:14,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:06:14,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:06:14,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:06:14,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:06:14,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:06:14,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:06:14,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:06:14,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:06:14,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:06:14,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:06:14,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:06:14,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:06:14,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:06:14,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:06:14,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:06:14,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:06:14,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:06:14,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:06:14,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:06:14,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:06:14,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:06:14,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:06:14,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:06:14,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:06:14,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:06:14,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:06:14,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:06:14,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:06:14,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:06:14,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:06:14,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:06:14,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:06:14,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:06:14,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:06:14,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:06:14,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 18:06:14,840 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:06:14,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:06:14,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:06:14,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:06:14,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:06:14,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:06:14,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:06:14,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:06:14,843 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:06:14,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:06:14,844 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:06:14,844 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:06:14,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:06:14,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:06:14,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:06:14,845 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:06:14,845 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:06:14,846 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:06:14,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:06:14,846 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:06:14,847 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:06:14,847 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:06:14,847 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:06:14,847 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:06:14,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:06:14,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:06:14,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:06:14,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:06:14,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:06:14,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:06:14,849 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:06:14,850 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:06:14,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:06:14,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:06:14,850 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_a8bdfb2a-10af-473b-87a7-a9246bb478b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eef0a1d7c251abc753eabb723fe850489bfd10ab147ced1a31e6821eaf88c98 [2021-11-13 18:06:15,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:06:15,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:06:15,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:06:15,290 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:06:15,291 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:06:15,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i [2021-11-13 18:06:15,367 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/data/ce0ae2278/3213006a195848d294e26bfe64fd43d6/FLAGece6f3dfc [2021-11-13 18:06:16,170 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:06:16,171 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i [2021-11-13 18:06:16,193 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/data/ce0ae2278/3213006a195848d294e26bfe64fd43d6/FLAGece6f3dfc [2021-11-13 18:06:16,365 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/data/ce0ae2278/3213006a195848d294e26bfe64fd43d6 [2021-11-13 18:06:16,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:06:16,374 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:06:16,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:06:16,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:06:16,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:06:16,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:06:16" (1/1) ... [2021-11-13 18:06:16,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3f42bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:16, skipping insertion in model container [2021-11-13 18:06:16,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:06:16" (1/1) ... [2021-11-13 18:06:16,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:06:16,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:06:17,027 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_a8bdfb2a-10af-473b-87a7-a9246bb478b7/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i[33021,33034] [2021-11-13 18:06:17,160 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_a8bdfb2a-10af-473b-87a7-a9246bb478b7/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i[45234,45247] [2021-11-13 18:06:17,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:06:17,194 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 18:06:17,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:06:17,275 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_a8bdfb2a-10af-473b-87a7-a9246bb478b7/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i[33021,33034] [2021-11-13 18:06:17,395 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_a8bdfb2a-10af-473b-87a7-a9246bb478b7/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i[45234,45247] [2021-11-13 18:06:17,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:06:17,411 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:06:17,480 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_a8bdfb2a-10af-473b-87a7-a9246bb478b7/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i[33021,33034] [2021-11-13 18:06:17,537 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_a8bdfb2a-10af-473b-87a7-a9246bb478b7/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i[45234,45247] [2021-11-13 18:06:17,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:06:17,595 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:06:17,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:17 WrapperNode [2021-11-13 18:06:17,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:06:17,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:06:17,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:06:17,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:06:17,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:17" (1/1) ... [2021-11-13 18:06:17,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:17" (1/1) ... [2021-11-13 18:06:17,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:17" (1/1) ... [2021-11-13 18:06:17,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:17" (1/1) ... [2021-11-13 18:06:17,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:17" (1/1) ... [2021-11-13 18:06:17,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:17" (1/1) ... [2021-11-13 18:06:17,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:17" (1/1) ... [2021-11-13 18:06:17,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:06:17,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:06:17,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:06:17,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:06:17,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:17" (1/1) ... [2021-11-13 18:06:17,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:06:17,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:06:17,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:06:17,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:06:17,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 18:06:17,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:06:17,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:06:17,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 18:06:17,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 18:06:17,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 18:06:17,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 18:06:17,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 18:06:17,940 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 18:06:17,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 18:06:17,940 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-11-13 18:06:17,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 18:06:17,941 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:06:17,941 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-13 18:06:17,941 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-13 18:06:17,941 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-13 18:06:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-13 18:06:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 18:06:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-13 18:06:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-13 18:06:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 18:06:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-13 18:06:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-13 18:06:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-13 18:06:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 18:06:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-13 18:06:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-13 18:06:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-13 18:06:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-13 18:06:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-13 18:06:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-13 18:06:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-13 18:06:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-13 18:06:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-13 18:06:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-13 18:06:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-13 18:06:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-13 18:06:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-13 18:06:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-13 18:06:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-13 18:06:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-13 18:06:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-13 18:06:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-13 18:06:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-13 18:06:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-13 18:06:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-13 18:06:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-13 18:06:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-13 18:06:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-13 18:06:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-13 18:06:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-13 18:06:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-13 18:06:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-13 18:06:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-13 18:06:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-13 18:06:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-13 18:06:17,954 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-13 18:06:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-13 18:06:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-13 18:06:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-13 18:06:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-13 18:06:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-13 18:06:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-13 18:06:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-13 18:06:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 18:06:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 18:06:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 18:06:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 18:06:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 18:06:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 18:06:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 18:06:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 18:06:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 18:06:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 18:06:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 18:06:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 18:06:17,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 18:06:17,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 18:06:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 18:06:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 18:06:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 18:06:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 18:06:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 18:06:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 18:06:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 18:06:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 18:06:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 18:06:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 18:06:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 18:06:17,962 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 18:06:17,962 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 18:06:17,962 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 18:06:17,963 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 18:06:17,963 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 18:06:17,963 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 18:06:17,963 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 18:06:17,963 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 18:06:17,963 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 18:06:17,964 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 18:06:17,964 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 18:06:17,964 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 18:06:17,964 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 18:06:17,964 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 18:06:17,964 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 18:06:17,965 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 18:06:17,965 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 18:06:17,965 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 18:06:17,965 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 18:06:17,965 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 18:06:17,965 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 18:06:17,966 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 18:06:17,966 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 18:06:17,966 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 18:06:17,966 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 18:06:17,967 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 18:06:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 18:06:17,971 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 18:06:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 18:06:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 18:06:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 18:06:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 18:06:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 18:06:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 18:06:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 18:06:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 18:06:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 18:06:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 18:06:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 18:06:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 18:06:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 18:06:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 18:06:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 18:06:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 18:06:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 18:06:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 18:06:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 18:06:17,984 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 18:06:17,984 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 18:06:17,984 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 18:06:17,984 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 18:06:17,984 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 18:06:17,984 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 18:06:17,985 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 18:06:17,985 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 18:06:17,985 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 18:06:17,985 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 18:06:17,985 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 18:06:17,985 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 18:06:17,985 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 18:06:17,986 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 18:06:17,986 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 18:06:17,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 18:06:17,986 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 18:06:17,986 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 18:06:17,986 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 18:06:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 18:06:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 18:06:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 18:06:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 18:06:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 18:06:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 18:06:17,988 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 18:06:17,988 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 18:06:17,988 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 18:06:17,988 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 18:06:17,988 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 18:06:17,988 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 18:06:17,989 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 18:06:17,989 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 18:06:17,989 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 18:06:17,989 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 18:06:17,989 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 18:06:17,989 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 18:06:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 18:06:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 18:06:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:06:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 18:06:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-11-13 18:06:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 18:06:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:06:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:06:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:06:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 18:06:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:06:17,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:06:17,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:06:17,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:06:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 18:06:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:06:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:06:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:06:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 18:06:18,654 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 18:06:24,110 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:06:24,111 INFO L299 CfgBuilder]: Removed 62 assume(true) statements. [2021-11-13 18:06:24,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:06:24 BoogieIcfgContainer [2021-11-13 18:06:24,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:06:24,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:06:24,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:06:24,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:06:24,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:06:16" (1/3) ... [2021-11-13 18:06:24,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452f65b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:06:24, skipping insertion in model container [2021-11-13 18:06:24,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:17" (2/3) ... [2021-11-13 18:06:24,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452f65b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:06:24, skipping insertion in model container [2021-11-13 18:06:24,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:06:24" (3/3) ... [2021-11-13 18:06:24,134 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test8-1.i [2021-11-13 18:06:24,140 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:06:24,141 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-13 18:06:24,210 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:06:24,219 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 18:06:24,219 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-13 18:06:24,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 1102 states, 541 states have (on average 2.2384473197781887) internal successors, (1211), 1089 states have internal predecessors, (1211), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-13 18:06:24,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 18:06:24,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:06:24,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:24,281 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:06:24,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:24,290 INFO L85 PathProgramCache]: Analyzing trace with hash -292335135, now seen corresponding path program 1 times [2021-11-13 18:06:24,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:24,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498312381] [2021-11-13 18:06:24,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:24,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:24,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:24,307 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:24,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:06:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:24,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:06:24,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:06:24,679 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 18:06:24,690 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 18:06:24,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:06:24,740 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 18:06:24,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:06:24,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498312381] [2021-11-13 18:06:24,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498312381] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:24,742 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:24,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:06:24,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414547376] [2021-11-13 18:06:24,745 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:24,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:06:24,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:06:24,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:06:24,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:06:24,783 INFO L87 Difference]: Start difference. First operand has 1102 states, 541 states have (on average 2.2384473197781887) internal successors, (1211), 1089 states have internal predecessors, (1211), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 18:06:26,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:06:26,924 INFO L93 Difference]: Finished difference Result 1105 states and 1191 transitions. [2021-11-13 18:06:26,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:06:26,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 7 [2021-11-13 18:06:26,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:06:26,949 INFO L225 Difference]: With dead ends: 1105 [2021-11-13 18:06:26,949 INFO L226 Difference]: Without dead ends: 1102 [2021-11-13 18:06:26,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 18:06:26,955 INFO L933 BasicCegarLoop]: 701 mSDtfsCounter, 971 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1652.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.56ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2021.18ms IncrementalHoareTripleChecker+Time [2021-11-13 18:06:26,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 835 Invalid, 565 Unknown, 0 Unchecked, 20.56ms Time], IncrementalHoareTripleChecker [16 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 2021.18ms Time] [2021-11-13 18:06:26,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-11-13 18:06:27,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1090. [2021-11-13 18:06:27,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 544 states have (on average 2.088235294117647) internal successors, (1136), 1077 states have internal predecessors, (1136), 23 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-13 18:06:27,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1181 transitions. [2021-11-13 18:06:27,077 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1181 transitions. Word has length 7 [2021-11-13 18:06:27,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:06:27,078 INFO L470 AbstractCegarLoop]: Abstraction has 1090 states and 1181 transitions. [2021-11-13 18:06:27,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 18:06:27,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1181 transitions. [2021-11-13 18:06:27,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 18:06:27,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:06:27,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:27,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-13 18:06:27,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:06:27,292 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:06:27,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:27,293 INFO L85 PathProgramCache]: Analyzing trace with hash -292335134, now seen corresponding path program 1 times [2021-11-13 18:06:27,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:27,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271345353] [2021-11-13 18:06:27,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:27,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:27,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:27,296 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:27,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:06:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:27,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:06:27,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:06:27,539 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 18:06:27,556 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 18:06:27,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:06:27,626 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 18:06:27,627 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:06:27,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271345353] [2021-11-13 18:06:27,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271345353] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:27,627 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:27,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 18:06:27,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522988617] [2021-11-13 18:06:27,628 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:27,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:06:27,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:06:27,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:06:27,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:06:27,630 INFO L87 Difference]: Start difference. First operand 1090 states and 1181 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 18:06:33,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:06:33,062 INFO L93 Difference]: Finished difference Result 1566 states and 1691 transitions. [2021-11-13 18:06:33,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:06:33,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 7 [2021-11-13 18:06:33,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:06:33,072 INFO L225 Difference]: With dead ends: 1566 [2021-11-13 18:06:33,073 INFO L226 Difference]: Without dead ends: 1566 [2021-11-13 18:06:33,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 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 18:06:33,075 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 1557 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4653.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.46ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5325.27ms IncrementalHoareTripleChecker+Time [2021-11-13 18:06:33,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1560 Valid, 1520 Invalid, 905 Unknown, 0 Unchecked, 22.46ms Time], IncrementalHoareTripleChecker [19 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 5325.27ms Time] [2021-11-13 18:06:33,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-11-13 18:06:33,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1129. [2021-11-13 18:06:33,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 591 states have (on average 2.0676818950930627) internal successors, (1222), 1115 states have internal predecessors, (1222), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-13 18:06:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1269 transitions. [2021-11-13 18:06:33,144 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1269 transitions. Word has length 7 [2021-11-13 18:06:33,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:06:33,145 INFO L470 AbstractCegarLoop]: Abstraction has 1129 states and 1269 transitions. [2021-11-13 18:06:33,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 18:06:33,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1269 transitions. [2021-11-13 18:06:33,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 18:06:33,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:06:33,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:33,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:06:33,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:06:33,358 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:06:33,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:33,358 INFO L85 PathProgramCache]: Analyzing trace with hash -184131353, now seen corresponding path program 1 times [2021-11-13 18:06:33,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:33,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497763434] [2021-11-13 18:06:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:33,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:33,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:33,362 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:33,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:06:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:33,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:06:33,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:06:33,631 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 18:06:33,682 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 18:06:33,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:06:33,799 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 18:06:33,800 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:06:33,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497763434] [2021-11-13 18:06:33,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497763434] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:33,804 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:33,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 18:06:33,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844627537] [2021-11-13 18:06:33,805 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:33,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:06:33,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:06:33,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:06:33,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:06:33,808 INFO L87 Difference]: Start difference. First operand 1129 states and 1269 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 18:06:39,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:06:39,658 INFO L93 Difference]: Finished difference Result 1565 states and 1690 transitions. [2021-11-13 18:06:39,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:06:39,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 12 [2021-11-13 18:06:39,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:06:39,672 INFO L225 Difference]: With dead ends: 1565 [2021-11-13 18:06:39,672 INFO L226 Difference]: Without dead ends: 1565 [2021-11-13 18:06:39,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 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 18:06:39,674 INFO L933 BasicCegarLoop]: 1210 mSDtfsCounter, 752 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5046.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 2174 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.89ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5752.62ms IncrementalHoareTripleChecker+Time [2021-11-13 18:06:39,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 2174 Invalid, 1275 Unknown, 0 Unchecked, 19.89ms Time], IncrementalHoareTripleChecker [16 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 5752.62ms Time] [2021-11-13 18:06:39,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2021-11-13 18:06:39,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1327. [2021-11-13 18:06:39,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 798 states have (on average 2.0426065162907268) internal successors, (1630), 1312 states have internal predecessors, (1630), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:06:39,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1679 transitions. [2021-11-13 18:06:39,722 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1679 transitions. Word has length 12 [2021-11-13 18:06:39,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:06:39,722 INFO L470 AbstractCegarLoop]: Abstraction has 1327 states and 1679 transitions. [2021-11-13 18:06:39,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 18:06:39,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1679 transitions. [2021-11-13 18:06:39,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 18:06:39,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:06:39,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:39,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:06:39,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:06:39,952 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:06:39,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:39,953 INFO L85 PathProgramCache]: Analyzing trace with hash -184131354, now seen corresponding path program 1 times [2021-11-13 18:06:39,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:39,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654202907] [2021-11-13 18:06:39,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:39,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:39,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:39,955 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:39,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:06:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:40,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:06:40,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:06:40,141 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 18:06:40,155 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 18:06:40,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:06:40,196 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 18:06:40,196 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:06:40,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654202907] [2021-11-13 18:06:40,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654202907] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:40,197 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:40,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:06:40,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432983388] [2021-11-13 18:06:40,197 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:40,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:06:40,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:06:40,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:06:40,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:06:40,200 INFO L87 Difference]: Start difference. First operand 1327 states and 1679 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 18:06:42,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:06:42,500 INFO L93 Difference]: Finished difference Result 1656 states and 2033 transitions. [2021-11-13 18:06:42,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:06:42,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 12 [2021-11-13 18:06:42,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:06:42,514 INFO L225 Difference]: With dead ends: 1656 [2021-11-13 18:06:42,514 INFO L226 Difference]: Without dead ends: 1656 [2021-11-13 18:06:42,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 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 18:06:42,518 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 980 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1884.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.70ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2246.12ms IncrementalHoareTripleChecker+Time [2021-11-13 18:06:42,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 1308 Invalid, 760 Unknown, 0 Unchecked, 9.70ms Time], IncrementalHoareTripleChecker [54 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 2246.12ms Time] [2021-11-13 18:06:42,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2021-11-13 18:06:42,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1280. [2021-11-13 18:06:42,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 798 states have (on average 1.9774436090225564) internal successors, (1578), 1265 states have internal predecessors, (1578), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:06:42,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1627 transitions. [2021-11-13 18:06:42,572 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1627 transitions. Word has length 12 [2021-11-13 18:06:42,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:06:42,573 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1627 transitions. [2021-11-13 18:06:42,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 18:06:42,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1627 transitions. [2021-11-13 18:06:42,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-13 18:06:42,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:06:42,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:42,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-13 18:06:42,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:06:42,787 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr534ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:06:42,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:42,788 INFO L85 PathProgramCache]: Analyzing trace with hash -42398436, now seen corresponding path program 1 times [2021-11-13 18:06:42,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:42,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926611197] [2021-11-13 18:06:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:42,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:42,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:42,790 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:42,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:06:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:43,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:06:43,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:06:43,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:06:43,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:06:43,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:06:43,140 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 18:06:43,141 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-13 18:06:43,234 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 18:06:43,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-13 18:06:43,263 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 18:06:43,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:06:43,343 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 18:06:43,343 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:06:43,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926611197] [2021-11-13 18:06:43,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926611197] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:43,344 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:43,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:06:43,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063401564] [2021-11-13 18:06:43,344 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:43,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:06:43,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:06:43,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:06:43,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:06:43,345 INFO L87 Difference]: Start difference. First operand 1280 states and 1627 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 18:06:45,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:06:45,558 INFO L93 Difference]: Finished difference Result 1790 states and 2346 transitions. [2021-11-13 18:06:45,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:06:45,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 14 [2021-11-13 18:06:45,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:06:45,571 INFO L225 Difference]: With dead ends: 1790 [2021-11-13 18:06:45,571 INFO L226 Difference]: Without dead ends: 1790 [2021-11-13 18:06:45,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:06:45,573 INFO L933 BasicCegarLoop]: 1056 mSDtfsCounter, 356 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1845.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 3995 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.88ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2142.52ms IncrementalHoareTripleChecker+Time [2021-11-13 18:06:45,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 3995 Invalid, 415 Unknown, 0 Unchecked, 9.88ms Time], IncrementalHoareTripleChecker [2 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 2142.52ms Time] [2021-11-13 18:06:45,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2021-11-13 18:06:45,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1280. [2021-11-13 18:06:45,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 798 states have (on average 1.9761904761904763) internal successors, (1577), 1265 states have internal predecessors, (1577), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:06:45,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1626 transitions. [2021-11-13 18:06:45,614 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1626 transitions. Word has length 14 [2021-11-13 18:06:45,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:06:45,614 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1626 transitions. [2021-11-13 18:06:45,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 18:06:45,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1626 transitions. [2021-11-13 18:06:45,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 18:06:45,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:06:45,616 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] [2021-11-13 18:06:45,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:06:45,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:06:45,828 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:06:45,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:45,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1725470958, now seen corresponding path program 1 times [2021-11-13 18:06:45,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:45,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932857046] [2021-11-13 18:06:45,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:45,830 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:45,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:45,831 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:45,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:06:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:46,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:06:46,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:06:46,137 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 18:06:46,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:06:46,197 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 18:06:46,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:06:46,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932857046] [2021-11-13 18:06:46,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932857046] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:46,198 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:46,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:06:46,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451885701] [2021-11-13 18:06:46,199 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:46,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:06:46,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:06:46,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:06:46,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:06:46,201 INFO L87 Difference]: Start difference. First operand 1280 states and 1626 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 18:06:46,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:06:46,261 INFO L93 Difference]: Finished difference Result 1247 states and 1592 transitions. [2021-11-13 18:06:46,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:06:46,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 22 [2021-11-13 18:06:46,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:06:46,271 INFO L225 Difference]: With dead ends: 1247 [2021-11-13 18:06:46,271 INFO L226 Difference]: Without dead ends: 1247 [2021-11-13 18:06:46,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 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 18:06:46,273 INFO L933 BasicCegarLoop]: 1058 mSDtfsCounter, 1932 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1937 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.20ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.65ms IncrementalHoareTripleChecker+Time [2021-11-13 18:06:46,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1937 Valid, 1155 Invalid, 17 Unknown, 0 Unchecked, 5.20ms Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 31.65ms Time] [2021-11-13 18:06:46,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2021-11-13 18:06:46,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1238. [2021-11-13 18:06:46,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 780 states have (on average 1.9666666666666666) internal successors, (1534), 1223 states have internal predecessors, (1534), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:06:46,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1583 transitions. [2021-11-13 18:06:46,316 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1583 transitions. Word has length 22 [2021-11-13 18:06:46,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:06:46,317 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1583 transitions. [2021-11-13 18:06:46,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 18:06:46,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1583 transitions. [2021-11-13 18:06:46,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 18:06:46,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:06:46,319 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] [2021-11-13 18:06:46,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-13 18:06:46,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:06:46,535 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:06:46,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:46,535 INFO L85 PathProgramCache]: Analyzing trace with hash -320213556, now seen corresponding path program 1 times [2021-11-13 18:06:46,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:46,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164893107] [2021-11-13 18:06:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:46,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:46,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:46,538 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:46,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:06:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:46,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:06:46,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:06:46,810 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 18:06:46,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:06:46,879 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 18:06:46,879 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:06:46,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164893107] [2021-11-13 18:06:46,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164893107] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:46,880 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:46,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 18:06:46,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690065848] [2021-11-13 18:06:46,880 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:46,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:06:46,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:06:46,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:06:46,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:06:46,882 INFO L87 Difference]: Start difference. First operand 1238 states and 1583 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 18:06:47,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:06:47,011 INFO L93 Difference]: Finished difference Result 1226 states and 1564 transitions. [2021-11-13 18:06:47,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:06:47,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 24 [2021-11-13 18:06:47,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:06:47,020 INFO L225 Difference]: With dead ends: 1226 [2021-11-13 18:06:47,021 INFO L226 Difference]: Without dead ends: 1226 [2021-11-13 18:06:47,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 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 18:06:47,022 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 1864 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1869 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.05ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.70ms IncrementalHoareTripleChecker+Time [2021-11-13 18:06:47,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1869 Valid, 2117 Invalid, 79 Unknown, 0 Unchecked, 9.05ms Time], IncrementalHoareTripleChecker [47 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 89.70ms Time] [2021-11-13 18:06:47,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-11-13 18:06:47,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1216. [2021-11-13 18:06:47,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 772 states have (on average 1.9494818652849741) internal successors, (1505), 1201 states have internal predecessors, (1505), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:06:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1554 transitions. [2021-11-13 18:06:47,059 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1554 transitions. Word has length 24 [2021-11-13 18:06:47,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:06:47,060 INFO L470 AbstractCegarLoop]: Abstraction has 1216 states and 1554 transitions. [2021-11-13 18:06:47,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 18:06:47,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1554 transitions. [2021-11-13 18:06:47,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 18:06:47,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:06:47,062 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] [2021-11-13 18:06:47,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:06:47,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:06:47,276 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:06:47,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:47,279 INFO L85 PathProgramCache]: Analyzing trace with hash 44817114, now seen corresponding path program 1 times [2021-11-13 18:06:47,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:47,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603939538] [2021-11-13 18:06:47,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:47,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:47,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:47,282 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:47,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:06:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:47,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:06:47,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:06:47,538 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 18:06:47,659 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 18:06:47,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:06:47,796 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 18:06:47,797 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:06:47,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603939538] [2021-11-13 18:06:47,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603939538] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:47,797 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:47,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:06:47,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518755993] [2021-11-13 18:06:47,797 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:47,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:06:47,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:06:47,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:06:47,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:06:47,799 INFO L87 Difference]: Start difference. First operand 1216 states and 1554 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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 18:06:49,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:06:49,959 INFO L93 Difference]: Finished difference Result 1806 states and 2377 transitions. [2021-11-13 18:06:49,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:06:49,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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 38 [2021-11-13 18:06:49,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:06:49,969 INFO L225 Difference]: With dead ends: 1806 [2021-11-13 18:06:49,970 INFO L226 Difference]: Without dead ends: 1806 [2021-11-13 18:06:49,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 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 18:06:49,971 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 2108 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1740.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.37ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2102.66ms IncrementalHoareTripleChecker+Time [2021-11-13 18:06:49,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2110 Valid, 1011 Invalid, 786 Unknown, 0 Unchecked, 12.37ms Time], IncrementalHoareTripleChecker [23 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 2102.66ms Time] [2021-11-13 18:06:49,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2021-11-13 18:06:50,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1212. [2021-11-13 18:06:50,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 772 states have (on average 1.944300518134715) internal successors, (1501), 1197 states have internal predecessors, (1501), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:06:50,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1550 transitions. [2021-11-13 18:06:50,010 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1550 transitions. Word has length 38 [2021-11-13 18:06:50,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:06:50,010 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 1550 transitions. [2021-11-13 18:06:50,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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 18:06:50,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1550 transitions. [2021-11-13 18:06:50,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 18:06:50,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:06:50,012 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] [2021-11-13 18:06:50,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:06:50,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:06:50,224 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:06:50,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:50,225 INFO L85 PathProgramCache]: Analyzing trace with hash 44817115, now seen corresponding path program 1 times [2021-11-13 18:06:50,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:50,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622916877] [2021-11-13 18:06:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:50,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:50,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:50,226 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:50,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 18:06:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:50,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:06:50,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:06:50,463 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 18:06:50,780 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 18:06:50,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:06:51,350 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 18:06:51,351 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:06:51,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622916877] [2021-11-13 18:06:51,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622916877] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:51,351 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:51,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:06:51,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983535255] [2021-11-13 18:06:51,352 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:51,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:06:51,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:06:51,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:06:51,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:06:51,354 INFO L87 Difference]: Start difference. First operand 1212 states and 1550 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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 18:06:58,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:06:58,781 INFO L93 Difference]: Finished difference Result 1453 states and 1568 transitions. [2021-11-13 18:06:58,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:06:58,784 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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 38 [2021-11-13 18:06:58,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:06:58,791 INFO L225 Difference]: With dead ends: 1453 [2021-11-13 18:06:58,791 INFO L226 Difference]: Without dead ends: 1453 [2021-11-13 18:06:58,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:06:58,793 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 1848 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6434.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.11ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7263.68ms IncrementalHoareTripleChecker+Time [2021-11-13 18:06:58,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1848 Valid, 2183 Invalid, 1590 Unknown, 0 Unchecked, 13.11ms Time], IncrementalHoareTripleChecker [17 Valid, 1573 Invalid, 0 Unknown, 0 Unchecked, 7263.68ms Time] [2021-11-13 18:06:58,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-11-13 18:06:58,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1208. [2021-11-13 18:06:58,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 772 states have (on average 1.939119170984456) internal successors, (1497), 1193 states have internal predecessors, (1497), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:06:58,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1546 transitions. [2021-11-13 18:06:58,828 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1546 transitions. Word has length 38 [2021-11-13 18:06:58,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:06:58,828 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1546 transitions. [2021-11-13 18:06:58,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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 18:06:58,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1546 transitions. [2021-11-13 18:06:58,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-13 18:06:58,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:06:58,831 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] [2021-11-13 18:06:58,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-13 18:06:59,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:06:59,044 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:06:59,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:59,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1384262345, now seen corresponding path program 1 times [2021-11-13 18:06:59,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:59,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524031332] [2021-11-13 18:06:59,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:59,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:59,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:59,047 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:59,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 18:06:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:59,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:06:59,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:06:59,432 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 18:06:59,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:06:59,569 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 18:06:59,570 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:06:59,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524031332] [2021-11-13 18:06:59,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524031332] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:59,570 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:59,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:06:59,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470957019] [2021-11-13 18:06:59,571 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:59,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:06:59,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:06:59,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:06:59,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:06:59,573 INFO L87 Difference]: Start difference. First operand 1208 states and 1546 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 18:06:59,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:06:59,652 INFO L93 Difference]: Finished difference Result 1211 states and 1545 transitions. [2021-11-13 18:06:59,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:06:59,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 53 [2021-11-13 18:06:59,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:06:59,660 INFO L225 Difference]: With dead ends: 1211 [2021-11-13 18:06:59,660 INFO L226 Difference]: Without dead ends: 1211 [2021-11-13 18:06:59,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 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 18:06:59,661 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 913 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.46ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.38ms IncrementalHoareTripleChecker+Time [2021-11-13 18:06:59,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 2095 Invalid, 41 Unknown, 0 Unchecked, 5.46ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 46.38ms Time] [2021-11-13 18:06:59,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-11-13 18:06:59,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1202. [2021-11-13 18:06:59,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 766 states have (on average 1.941253263707572) internal successors, (1487), 1187 states have internal predecessors, (1487), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:06:59,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1536 transitions. [2021-11-13 18:06:59,703 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1536 transitions. Word has length 53 [2021-11-13 18:06:59,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:06:59,706 INFO L470 AbstractCegarLoop]: Abstraction has 1202 states and 1536 transitions. [2021-11-13 18:06:59,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 18:06:59,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1536 transitions. [2021-11-13 18:06:59,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-13 18:06:59,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:06:59,711 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] [2021-11-13 18:06:59,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:06:59,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:06:59,928 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:06:59,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:59,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1870144277, now seen corresponding path program 1 times [2021-11-13 18:06:59,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:59,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457939483] [2021-11-13 18:06:59,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:59,930 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:59,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:59,931 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:59,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 18:07:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:00,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:07:00,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:07:00,706 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 18:07:00,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:07:01,142 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 18:07:01,142 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:07:01,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457939483] [2021-11-13 18:07:01,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457939483] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:07:01,142 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:07:01,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:07:01,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864619314] [2021-11-13 18:07:01,143 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:07:01,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:07:01,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:07:01,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:07:01,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:07:01,144 INFO L87 Difference]: Start difference. First operand 1202 states and 1536 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 18:07:01,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:01,469 INFO L93 Difference]: Finished difference Result 1742 states and 2271 transitions. [2021-11-13 18:07:01,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:07:01,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 61 [2021-11-13 18:07:01,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:01,479 INFO L225 Difference]: With dead ends: 1742 [2021-11-13 18:07:01,479 INFO L226 Difference]: Without dead ends: 1742 [2021-11-13 18:07:01,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 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 18:07:01,480 INFO L933 BasicCegarLoop]: 1221 mSDtfsCounter, 407 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 245.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.88ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 289.43ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:01,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 2085 Invalid, 110 Unknown, 0 Unchecked, 17.88ms Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 289.43ms Time] [2021-11-13 18:07:01,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2021-11-13 18:07:01,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1563. [2021-11-13 18:07:01,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1125 states have (on average 1.9244444444444444) internal successors, (2165), 1546 states have internal predecessors, (2165), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-13 18:07:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2218 transitions. [2021-11-13 18:07:01,525 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2218 transitions. Word has length 61 [2021-11-13 18:07:01,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:01,526 INFO L470 AbstractCegarLoop]: Abstraction has 1563 states and 2218 transitions. [2021-11-13 18:07:01,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 18:07:01,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2218 transitions. [2021-11-13 18:07:01,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 18:07:01,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:01,532 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] [2021-11-13 18:07:01,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:07:01,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:07:01,733 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:07:01,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:01,733 INFO L85 PathProgramCache]: Analyzing trace with hash 740278757, now seen corresponding path program 1 times [2021-11-13 18:07:01,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:07:01,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106793858] [2021-11-13 18:07:01,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:01,734 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:07:01,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:07:01,735 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:07:01,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 18:07:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:02,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:07:02,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:07:02,198 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 18:07:02,207 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 18:07:03,030 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 18:07:03,030 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 25 treesize of output 27 [2021-11-13 18:07:03,054 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 18:07:03,055 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 24 treesize of output 20 [2021-11-13 18:07:03,102 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 18:07:03,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:07:10,604 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 18:07:10,605 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:07:10,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106793858] [2021-11-13 18:07:10,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106793858] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:07:10,605 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:07:10,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:07:10,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221775468] [2021-11-13 18:07:10,606 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:07:10,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:07:10,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:07:10,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:07:10,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 18:07:10,607 INFO L87 Difference]: Start difference. First operand 1563 states and 2218 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 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 18:07:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:17,485 INFO L93 Difference]: Finished difference Result 2168 states and 2916 transitions. [2021-11-13 18:07:17,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:07:17,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 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 64 [2021-11-13 18:07:17,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:17,498 INFO L225 Difference]: With dead ends: 2168 [2021-11-13 18:07:17,498 INFO L226 Difference]: Without dead ends: 2168 [2021-11-13 18:07:17,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-13 18:07:17,499 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 1500 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5845.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.52ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1083 IncrementalHoareTripleChecker+Unchecked, 6768.40ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:17,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 1625 Invalid, 2548 Unknown, 0 Unchecked, 17.52ms Time], IncrementalHoareTripleChecker [57 Valid, 1408 Invalid, 0 Unknown, 1083 Unchecked, 6768.40ms Time] [2021-11-13 18:07:17,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2021-11-13 18:07:17,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 1175. [2021-11-13 18:07:17,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 773 states have (on average 1.8253557567917205) internal successors, (1411), 1160 states have internal predecessors, (1411), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:07:17,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1460 transitions. [2021-11-13 18:07:17,539 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1460 transitions. Word has length 64 [2021-11-13 18:07:17,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:17,540 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 1460 transitions. [2021-11-13 18:07:17,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 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 18:07:17,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1460 transitions. [2021-11-13 18:07:17,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 18:07:17,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:17,542 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] [2021-11-13 18:07:17,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:07:17,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:07:17,757 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:07:17,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:17,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1556673562, now seen corresponding path program 1 times [2021-11-13 18:07:17,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:07:17,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483587863] [2021-11-13 18:07:17,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:17,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:07:17,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:07:17,760 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:07:17,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 18:07:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:18,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:07:18,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:07:18,392 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 18:07:18,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:07:18,480 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 18:07:18,897 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 18:07:18,897 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:07:18,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483587863] [2021-11-13 18:07:18,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483587863] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:07:18,897 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:07:18,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:07:18,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791374645] [2021-11-13 18:07:18,898 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:07:18,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:07:18,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:07:18,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:07:18,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:07:18,899 INFO L87 Difference]: Start difference. First operand 1175 states and 1460 transitions. Second operand has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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 18:07:21,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:21,064 INFO L93 Difference]: Finished difference Result 1173 states and 1458 transitions. [2021-11-13 18:07:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:07:21,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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 66 [2021-11-13 18:07:21,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:21,073 INFO L225 Difference]: With dead ends: 1173 [2021-11-13 18:07:21,074 INFO L226 Difference]: Without dead ends: 1173 [2021-11-13 18:07:21,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 18:07:21,075 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 2550 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1812.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2555 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.63ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2132.85ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:21,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2555 Valid, 807 Invalid, 466 Unknown, 0 Unchecked, 7.63ms Time], IncrementalHoareTripleChecker [24 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 2132.85ms Time] [2021-11-13 18:07:21,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-11-13 18:07:21,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2021-11-13 18:07:21,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 773 states have (on average 1.8227684346701165) internal successors, (1409), 1158 states have internal predecessors, (1409), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:07:21,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1458 transitions. [2021-11-13 18:07:21,105 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1458 transitions. Word has length 66 [2021-11-13 18:07:21,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:21,105 INFO L470 AbstractCegarLoop]: Abstraction has 1173 states and 1458 transitions. [2021-11-13 18:07:21,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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 18:07:21,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1458 transitions. [2021-11-13 18:07:21,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 18:07:21,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:21,107 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] [2021-11-13 18:07:21,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 18:07:21,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:07:21,321 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:07:21,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:21,321 INFO L85 PathProgramCache]: Analyzing trace with hash -2099807298, now seen corresponding path program 1 times [2021-11-13 18:07:21,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:07:21,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688597244] [2021-11-13 18:07:21,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:21,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:07:21,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:07:21,323 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:07:21,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 18:07:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:21,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:07:21,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:07:21,686 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 18:07:21,705 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 22 treesize of output 18 [2021-11-13 18:07:21,741 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 18:07:21,764 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 18:07:21,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:07:21,902 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 18:07:21,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:07:21,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688597244] [2021-11-13 18:07:21,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688597244] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:07:21,903 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:07:21,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:07:21,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259017135] [2021-11-13 18:07:21,903 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:07:21,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:07:21,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:07:21,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:07:21,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:07:21,904 INFO L87 Difference]: Start difference. First operand 1173 states and 1458 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 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 18:07:25,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:25,229 INFO L93 Difference]: Finished difference Result 1172 states and 1457 transitions. [2021-11-13 18:07:25,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:07:25,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 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 69 [2021-11-13 18:07:25,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:25,235 INFO L225 Difference]: With dead ends: 1172 [2021-11-13 18:07:25,236 INFO L226 Difference]: Without dead ends: 1172 [2021-11-13 18:07:25,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 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 18:07:25,236 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 4 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2783.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.53ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3253.10ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:25,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2568 Invalid, 1314 Unknown, 0 Unchecked, 9.53ms Time], IncrementalHoareTripleChecker [1 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 3253.10ms Time] [2021-11-13 18:07:25,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-11-13 18:07:25,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1172. [2021-11-13 18:07:25,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 773 states have (on average 1.8214747736093144) internal successors, (1408), 1157 states have internal predecessors, (1408), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:07:25,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1457 transitions. [2021-11-13 18:07:25,266 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1457 transitions. Word has length 69 [2021-11-13 18:07:25,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:25,266 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1457 transitions. [2021-11-13 18:07:25,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 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 18:07:25,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1457 transitions. [2021-11-13 18:07:25,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 18:07:25,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:25,268 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] [2021-11-13 18:07:25,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 18:07:25,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:07:25,484 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:07:25,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:25,484 INFO L85 PathProgramCache]: Analyzing trace with hash -2099807297, now seen corresponding path program 1 times [2021-11-13 18:07:25,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:07:25,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911346846] [2021-11-13 18:07:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:25,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:07:25,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:07:25,486 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:07:25,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 18:07:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:25,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:07:25,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:07:25,927 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 18:07:25,951 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 18:07:25,961 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 18:07:26,022 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 18:07:26,025 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 18:07:26,048 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 18:07:26,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:07:26,380 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 18:07:26,381 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:07:26,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911346846] [2021-11-13 18:07:26,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911346846] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:07:26,381 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:07:26,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 18:07:26,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755316897] [2021-11-13 18:07:26,382 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:07:26,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:07:26,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:07:26,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:07:26,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:07:26,383 INFO L87 Difference]: Start difference. First operand 1172 states and 1457 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 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 18:07:36,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:36,716 INFO L93 Difference]: Finished difference Result 1171 states and 1456 transitions. [2021-11-13 18:07:36,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:07:36,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 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 69 [2021-11-13 18:07:36,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:36,724 INFO L225 Difference]: With dead ends: 1171 [2021-11-13 18:07:36,724 INFO L226 Difference]: Without dead ends: 1171 [2021-11-13 18:07:36,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:07:36,725 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 3 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9144.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3683 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.16ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10215.13ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:36,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3683 Invalid, 2134 Unknown, 0 Unchecked, 15.16ms Time], IncrementalHoareTripleChecker [1 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 10215.13ms Time] [2021-11-13 18:07:36,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2021-11-13 18:07:36,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1171. [2021-11-13 18:07:36,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 772 states have (on average 1.822538860103627) internal successors, (1407), 1156 states have internal predecessors, (1407), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:07:36,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1456 transitions. [2021-11-13 18:07:36,755 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1456 transitions. Word has length 69 [2021-11-13 18:07:36,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:36,756 INFO L470 AbstractCegarLoop]: Abstraction has 1171 states and 1456 transitions. [2021-11-13 18:07:36,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 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 18:07:36,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1456 transitions. [2021-11-13 18:07:36,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-13 18:07:36,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:36,758 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:07:36,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-13 18:07:36,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:07:36,994 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:07:36,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:36,995 INFO L85 PathProgramCache]: Analyzing trace with hash 178416389, now seen corresponding path program 1 times [2021-11-13 18:07:36,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:07:36,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191944618] [2021-11-13 18:07:36,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:36,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:07:36,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:07:36,997 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:07:36,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 18:07:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:37,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:07:37,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:07:37,407 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 18:07:37,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:07:37,561 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 18:07:37,561 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:07:37,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191944618] [2021-11-13 18:07:37,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191944618] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:07:37,562 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:07:37,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:07:37,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738724874] [2021-11-13 18:07:37,562 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:07:37,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:07:37,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:07:37,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:07:37,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:07:37,563 INFO L87 Difference]: Start difference. First operand 1171 states and 1456 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 18:07:37,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:37,676 INFO L93 Difference]: Finished difference Result 1181 states and 1469 transitions. [2021-11-13 18:07:37,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:07:37,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 77 [2021-11-13 18:07:37,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:37,692 INFO L225 Difference]: With dead ends: 1181 [2021-11-13 18:07:37,692 INFO L226 Difference]: Without dead ends: 1181 [2021-11-13 18:07:37,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 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 18:07:37,693 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 9 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.56ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.62ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:37,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2902 Invalid, 34 Unknown, 0 Unchecked, 2.56ms Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 80.62ms Time] [2021-11-13 18:07:37,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2021-11-13 18:07:37,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1181. [2021-11-13 18:07:37,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 780 states have (on average 1.8192307692307692) internal successors, (1419), 1165 states have internal predecessors, (1419), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-13 18:07:37,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1469 transitions. [2021-11-13 18:07:37,720 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1469 transitions. Word has length 77 [2021-11-13 18:07:37,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:37,721 INFO L470 AbstractCegarLoop]: Abstraction has 1181 states and 1469 transitions. [2021-11-13 18:07:37,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 18:07:37,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1469 transitions. [2021-11-13 18:07:37,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-13 18:07:37,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:37,722 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:07:37,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 18:07:37,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:07:37,937 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:07:37,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:37,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1398946491, now seen corresponding path program 1 times [2021-11-13 18:07:37,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:07:37,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584786707] [2021-11-13 18:07:37,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:37,938 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:07:37,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:07:37,940 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:07:37,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 18:07:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:38,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:07:38,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:07:38,426 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 18:07:38,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:07:38,685 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 18:07:38,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:07:38,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584786707] [2021-11-13 18:07:38,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584786707] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:07:38,686 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:07:38,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 18:07:38,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434514956] [2021-11-13 18:07:38,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:07:38,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:07:38,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:07:38,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:07:38,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:07:38,689 INFO L87 Difference]: Start difference. First operand 1181 states and 1469 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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 18:07:39,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:39,145 INFO L93 Difference]: Finished difference Result 1195 states and 1487 transitions. [2021-11-13 18:07:39,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:07:39,146 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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 79 [2021-11-13 18:07:39,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:39,153 INFO L225 Difference]: With dead ends: 1195 [2021-11-13 18:07:39,154 INFO L226 Difference]: Without dead ends: 1191 [2021-11-13 18:07:39,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 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 18:07:39,155 INFO L933 BasicCegarLoop]: 971 mSDtfsCounter, 24 mSDsluCounter, 5795 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 211.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 6766 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.72ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 241.16ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:39,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 6766 Invalid, 125 Unknown, 0 Unchecked, 5.72ms Time], IncrementalHoareTripleChecker [23 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 241.16ms Time] [2021-11-13 18:07:39,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2021-11-13 18:07:39,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1187. [2021-11-13 18:07:39,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 786 states have (on average 1.8155216284987277) internal successors, (1427), 1171 states have internal predecessors, (1427), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-13 18:07:39,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1477 transitions. [2021-11-13 18:07:39,185 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1477 transitions. Word has length 79 [2021-11-13 18:07:39,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:39,186 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 1477 transitions. [2021-11-13 18:07:39,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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 18:07:39,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1477 transitions. [2021-11-13 18:07:39,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 18:07:39,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:39,188 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:07:39,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 18:07:39,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:07:39,401 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:07:39,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:39,402 INFO L85 PathProgramCache]: Analyzing trace with hash -512767547, now seen corresponding path program 2 times [2021-11-13 18:07:39,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:07:39,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662808778] [2021-11-13 18:07:39,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:07:39,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:07:39,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:07:39,404 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:07:39,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 18:07:39,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:07:39,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:07:39,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 18:07:39,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:07:40,187 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 18:07:40,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:07:40,763 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 18:07:40,763 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:07:40,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662808778] [2021-11-13 18:07:40,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662808778] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:07:40,763 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:07:40,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-13 18:07:40,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988664784] [2021-11-13 18:07:40,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:07:40,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:07:40,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:07:40,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:07:40,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:07:40,766 INFO L87 Difference]: Start difference. First operand 1187 states and 1477 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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 18:07:42,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:42,436 INFO L93 Difference]: Finished difference Result 1215 states and 1515 transitions. [2021-11-13 18:07:42,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 18:07:42,438 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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 83 [2021-11-13 18:07:42,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:42,447 INFO L225 Difference]: With dead ends: 1215 [2021-11-13 18:07:42,447 INFO L226 Difference]: Without dead ends: 1211 [2021-11-13 18:07:42,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 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 18:07:42,449 INFO L933 BasicCegarLoop]: 975 mSDtfsCounter, 84 mSDsluCounter, 6801 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 628.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 7776 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.74ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 714.70ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:42,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 7776 Invalid, 375 Unknown, 0 Unchecked, 10.74ms Time], IncrementalHoareTripleChecker [67 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 714.70ms Time] [2021-11-13 18:07:42,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-11-13 18:07:42,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1199. [2021-11-13 18:07:42,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 798 states have (on average 1.8082706766917294) internal successors, (1443), 1183 states have internal predecessors, (1443), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-13 18:07:42,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1493 transitions. [2021-11-13 18:07:42,484 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1493 transitions. Word has length 83 [2021-11-13 18:07:42,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:42,485 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 1493 transitions. [2021-11-13 18:07:42,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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 18:07:42,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1493 transitions. [2021-11-13 18:07:42,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-13 18:07:42,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:42,487 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:07:42,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 18:07:42,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:07:42,707 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:07:42,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:42,708 INFO L85 PathProgramCache]: Analyzing trace with hash 326177477, now seen corresponding path program 3 times [2021-11-13 18:07:42,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:07:42,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023062732] [2021-11-13 18:07:42,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:07:42,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:07:42,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:07:42,711 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:07:42,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 18:07:43,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 18:07:43,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:07:43,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 18:07:43,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:07:44,242 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 18:07:44,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:07:46,341 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 18:07:46,341 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:07:46,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023062732] [2021-11-13 18:07:46,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023062732] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:07:46,342 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:07:46,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-13 18:07:46,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523277793] [2021-11-13 18:07:46,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:07:46,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-13 18:07:46,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:07:46,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-13 18:07:46,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 18:07:46,347 INFO L87 Difference]: Start difference. First operand 1199 states and 1493 transitions. Second operand has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 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 18:07:55,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:55,471 INFO L93 Difference]: Finished difference Result 1255 states and 1577 transitions. [2021-11-13 18:07:55,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-13 18:07:55,472 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 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 91 [2021-11-13 18:07:55,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:55,482 INFO L225 Difference]: With dead ends: 1255 [2021-11-13 18:07:55,483 INFO L226 Difference]: Without dead ends: 1249 [2021-11-13 18:07:55,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-13 18:07:55,485 INFO L933 BasicCegarLoop]: 982 mSDtfsCounter, 236 mSDsluCounter, 15632 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2281.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 16614 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.75ms SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2606.56ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:55,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 16614 Invalid, 1407 Unknown, 0 Unchecked, 20.75ms Time], IncrementalHoareTripleChecker [167 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 2606.56ms Time] [2021-11-13 18:07:55,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2021-11-13 18:07:55,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1223. [2021-11-13 18:07:55,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 822 states have (on average 1.7931873479318734) internal successors, (1474), 1207 states have internal predecessors, (1474), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-13 18:07:55,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1524 transitions. [2021-11-13 18:07:55,517 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1524 transitions. Word has length 91 [2021-11-13 18:07:55,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:55,517 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1524 transitions. [2021-11-13 18:07:55,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 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 18:07:55,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1524 transitions. [2021-11-13 18:07:55,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-13 18:07:55,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:55,519 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:07:55,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 18:07:55,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:07:55,736 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:07:55,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:55,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1201101627, now seen corresponding path program 4 times [2021-11-13 18:07:55,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:07:55,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657737895] [2021-11-13 18:07:55,738 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:07:55,738 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:07:55,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:07:55,740 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:07:55,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 18:07:56,144 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:07:56,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:07:56,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-13 18:07:56,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:07:57,333 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 18:07:57,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:08:01,885 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 18:08:01,886 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:08:01,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657737895] [2021-11-13 18:08:01,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657737895] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:08:01,886 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:08:01,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-13 18:08:01,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410833286] [2021-11-13 18:08:01,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:08:01,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-13 18:08:01,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:08:01,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-13 18:08:01,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-13 18:08:01,891 INFO L87 Difference]: Start difference. First operand 1223 states and 1524 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 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 18:08:17,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:08:17,450 INFO L93 Difference]: Finished difference Result 1315 states and 1644 transitions. [2021-11-13 18:08:17,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-13 18:08:17,451 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 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 107 [2021-11-13 18:08:17,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:08:17,458 INFO L225 Difference]: With dead ends: 1315 [2021-11-13 18:08:17,458 INFO L226 Difference]: Without dead ends: 1311 [2021-11-13 18:08:17,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-13 18:08:17,466 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 278 mSDsluCounter, 31783 mSDsCounter, 0 mSdLazyCounter, 4041 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7085.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 32781 SdHoareTripleChecker+Invalid, 4552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.25ms SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 4041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8081.36ms IncrementalHoareTripleChecker+Time [2021-11-13 18:08:17,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 32781 Invalid, 4552 Unknown, 0 Unchecked, 47.25ms Time], IncrementalHoareTripleChecker [511 Valid, 4041 Invalid, 0 Unknown, 0 Unchecked, 8081.36ms Time] [2021-11-13 18:08:17,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2021-11-13 18:08:17,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1253. [2021-11-13 18:08:17,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 852 states have (on average 1.784037558685446) internal successors, (1520), 1237 states have internal predecessors, (1520), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-13 18:08:17,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1570 transitions. [2021-11-13 18:08:17,502 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1570 transitions. Word has length 107 [2021-11-13 18:08:17,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:08:17,503 INFO L470 AbstractCegarLoop]: Abstraction has 1253 states and 1570 transitions. [2021-11-13 18:08:17,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 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 18:08:17,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1570 transitions. [2021-11-13 18:08:17,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-13 18:08:17,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:08:17,505 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:08:17,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 18:08:17,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:08:17,722 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:08:17,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:08:17,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1844395141, now seen corresponding path program 5 times [2021-11-13 18:08:17,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:08:17,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521511709] [2021-11-13 18:08:17,723 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:08:17,724 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:08:17,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:08:17,724 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:08:17,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8bdfb2a-10af-473b-87a7-a9246bb478b7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 18:08:18,954 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-13 18:08:18,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:08:18,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-13 18:08:19,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:08:19,019 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 18:08:19,316 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-13 18:08:19,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-13 18:08:19,360 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 26 treesize of output 22 [2021-11-13 18:08:19,541 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 36 treesize of output 24 [2021-11-13 18:17:56,257 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_#Ultimate.C_memset_#t~loopctr237_184| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_195| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_183| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_194| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_186| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_185| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_196| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_188| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_187| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_189| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_191| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_190| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_182| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_193| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_181| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_192| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr237_181|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr237_182|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr237_183|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr237_184|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr237_185|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr237_186|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr237_187|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr237_188|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr237_189|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr237_190|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr237_191|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr237_192|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr237_193|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr237_194|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr237_195|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr237_196|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_14 (_ BitVec 32)) (v_main_~user~0.base_BEFORE_CALL_1 (_ BitVec 32))) (and (not (= v_arrayElimCell_14 v_main_~user~0.base_BEFORE_CALL_1)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_main_~user~0.base_BEFORE_CALL_1))))) (_ bv1 1))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |c_#valid| v_arrayElimCell_14))))))) is different from false [2021-11-13 18:19:10,980 WARN L227 SmtUtils]: Spent 5.94s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)