./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.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_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/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_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/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_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/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 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:36:07,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:36:07,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:36:07,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:36:07,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:36:07,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:36:07,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:36:07,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:36:07,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:36:07,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:36:07,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:36:07,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:36:07,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:36:07,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:36:07,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:36:07,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:36:07,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:36:07,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:36:07,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:36:07,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:36:07,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:36:07,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:36:07,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:36:07,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:36:07,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:36:07,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:36:07,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:36:07,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:36:07,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:36:07,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:36:07,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:36:07,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:36:07,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:36:07,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:36:07,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:36:07,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:36:07,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:36:07,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:36:07,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:36:07,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:36:07,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:36:07,164 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 17:36:07,214 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:36:07,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:36:07,216 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:36:07,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:36:07,225 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:36:07,225 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:36:07,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:36:07,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:36:07,226 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:36:07,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:36:07,228 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:36:07,228 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:36:07,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:36:07,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:36:07,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:36:07,230 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:36:07,230 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:36:07,230 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:36:07,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:36:07,231 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:36:07,231 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:36:07,231 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:36:07,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:36:07,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:36:07,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:36:07,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:36:07,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:36:07,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:36:07,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:36:07,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:36:07,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:36:07,236 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_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb [2021-11-13 17:36:07,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:36:07,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:36:07,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:36:07,632 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:36:07,633 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:36:07,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2021-11-13 17:36:07,734 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/data/d6939d82c/662077ad5640451dbc99171da778c399/FLAGab2112380 [2021-11-13 17:36:08,572 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:36:08,573 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2021-11-13 17:36:08,619 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/data/d6939d82c/662077ad5640451dbc99171da778c399/FLAGab2112380 [2021-11-13 17:36:09,122 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/data/d6939d82c/662077ad5640451dbc99171da778c399 [2021-11-13 17:36:09,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:36:09,128 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:36:09,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:36:09,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:36:09,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:36:09,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:36:09" (1/1) ... [2021-11-13 17:36:09,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b8064c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:09, skipping insertion in model container [2021-11-13 17:36:09,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:36:09" (1/1) ... [2021-11-13 17:36:09,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:36:09,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:36:09,746 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_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[33021,33034] [2021-11-13 17:36:10,006 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_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[84583,84596] [2021-11-13 17:36:10,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:36:10,030 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-13 17:36:10,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@27218d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:10, skipping insertion in model container [2021-11-13 17:36:10,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:36:10,031 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 17:36:10,033 INFO L158 Benchmark]: Toolchain (without parser) took 903.52ms. Allocated memory is still 98.6MB. Free memory was 72.9MB in the beginning and 40.8MB in the end (delta: 32.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2021-11-13 17:36:10,034 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 81.8MB. Free memory was 55.9MB in the beginning and 55.8MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:36:10,035 INFO L158 Benchmark]: CACSL2BoogieTranslator took 897.20ms. Allocated memory is still 98.6MB. Free memory was 72.9MB in the beginning and 40.8MB in the end (delta: 32.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2021-11-13 17:36:10,037 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 81.8MB. Free memory was 55.9MB in the beginning and 55.8MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 897.20ms. Allocated memory is still 98.6MB. Free memory was 72.9MB in the beginning and 40.8MB in the end (delta: 32.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: 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_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/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_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/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_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/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 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:36:12,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:36:12,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:36:12,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:36:12,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:36:12,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:36:12,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:36:12,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:36:12,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:36:12,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:36:12,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:36:12,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:36:12,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:36:12,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:36:12,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:36:12,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:36:12,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:36:12,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:36:12,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:36:12,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:36:12,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:36:12,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:36:12,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:36:12,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:36:12,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:36:12,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:36:12,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:36:12,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:36:12,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:36:12,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:36:12,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:36:12,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:36:12,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:36:12,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:36:12,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:36:12,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:36:12,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:36:12,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:36:12,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:36:12,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:36:12,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:36:12,970 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 17:36:13,023 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:36:13,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:36:13,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:36:13,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:36:13,026 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:36:13,027 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:36:13,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:36:13,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:36:13,029 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:36:13,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:36:13,031 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:36:13,031 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:36:13,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:36:13,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:36:13,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:36:13,032 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:36:13,032 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:36:13,033 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:36:13,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:36:13,033 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:36:13,033 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:36:13,034 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:36:13,034 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:36:13,034 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:36:13,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:36:13,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:36:13,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:36:13,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:36:13,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:36:13,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:36:13,036 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:36:13,036 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:36:13,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:36:13,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:36:13,037 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_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb [2021-11-13 17:36:13,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:36:13,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:36:13,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:36:13,555 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:36:13,556 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:36:13,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2021-11-13 17:36:13,638 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/data/7c0a5ce4d/a29eef5c57d242f39205fe81dbf5b47d/FLAG175361c2f [2021-11-13 17:36:14,620 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:36:14,620 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2021-11-13 17:36:14,655 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/data/7c0a5ce4d/a29eef5c57d242f39205fe81dbf5b47d/FLAG175361c2f [2021-11-13 17:36:15,117 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/data/7c0a5ce4d/a29eef5c57d242f39205fe81dbf5b47d [2021-11-13 17:36:15,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:36:15,120 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:36:15,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:36:15,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:36:15,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:36:15,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:36:15" (1/1) ... [2021-11-13 17:36:15,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19420ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:15, skipping insertion in model container [2021-11-13 17:36:15,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:36:15" (1/1) ... [2021-11-13 17:36:15,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:36:15,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:36:15,701 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_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[33021,33034] [2021-11-13 17:36:15,973 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_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[84583,84596] [2021-11-13 17:36:15,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:36:16,021 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 17:36:16,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:36:16,088 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_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[33021,33034] [2021-11-13 17:36:16,229 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_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[84583,84596] [2021-11-13 17:36:16,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:36:16,242 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:36:16,269 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_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[33021,33034] [2021-11-13 17:36:16,392 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_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[84583,84596] [2021-11-13 17:36:16,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:36:16,451 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:36:16,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:16 WrapperNode [2021-11-13 17:36:16,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:36:16,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:36:16,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:36:16,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:36:16,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:16" (1/1) ... [2021-11-13 17:36:16,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:16" (1/1) ... [2021-11-13 17:36:16,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:16" (1/1) ... [2021-11-13 17:36:16,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:16" (1/1) ... [2021-11-13 17:36:16,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:16" (1/1) ... [2021-11-13 17:36:16,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:16" (1/1) ... [2021-11-13 17:36:16,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:16" (1/1) ... [2021-11-13 17:36:16,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:36:16,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:36:16,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:36:16,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:36:16,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:16" (1/1) ... [2021-11-13 17:36:16,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:36:16,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:36:16,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:36:16,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:36:16,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 17:36:16,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:36:16,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:36:16,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 17:36:16,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 17:36:16,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 17:36:16,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 17:36:16,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 17:36:16,928 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 17:36:16,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 17:36:16,928 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-13 17:36:16,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 17:36:16,929 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:36:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-13 17:36:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-13 17:36:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-13 17:36:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-13 17:36:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 17:36:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-13 17:36:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-13 17:36:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 17:36:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-13 17:36:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-13 17:36:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-13 17:36:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 17:36:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-13 17:36:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-13 17:36:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-13 17:36:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-13 17:36:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-13 17:36:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-13 17:36:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-13 17:36:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-13 17:36:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-13 17:36:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-13 17:36:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-13 17:36:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-13 17:36:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-13 17:36:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-13 17:36:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-13 17:36:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-13 17:36:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-13 17:36:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-13 17:36:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-13 17:36:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-13 17:36:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-13 17:36:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-13 17:36:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-13 17:36:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-13 17:36:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-13 17:36:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-13 17:36:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-13 17:36:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-13 17:36:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-13 17:36:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-13 17:36:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-13 17:36:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-13 17:36:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-13 17:36:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-13 17:36:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-13 17:36:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-13 17:36:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-13 17:36:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-13 17:36:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-13 17:36:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 17:36:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 17:36:16,943 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 17:36:16,943 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 17:36:16,943 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 17:36:16,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 17:36:16,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 17:36:16,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 17:36:16,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 17:36:16,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 17:36:16,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 17:36:16,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 17:36:16,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 17:36:16,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 17:36:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 17:36:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 17:36:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 17:36:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 17:36:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 17:36:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 17:36:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 17:36:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 17:36:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 17:36:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 17:36:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 17:36:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 17:36:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 17:36:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 17:36:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 17:36:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 17:36:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 17:36:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 17:36:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 17:36:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 17:36:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 17:36:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 17:36:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 17:36:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 17:36:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 17:36:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 17:36:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 17:36:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 17:36:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 17:36:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 17:36:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 17:36:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 17:36:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 17:36:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 17:36:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 17:36:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 17:36:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 17:36:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 17:36:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 17:36:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 17:36:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 17:36:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 17:36:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 17:36:16,958 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 17:36:16,959 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 17:36:16,959 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 17:36:16,960 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 17:36:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 17:36:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 17:36:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 17:36:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 17:36:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 17:36:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 17:36:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 17:36:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 17:36:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 17:36:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 17:36:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 17:36:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 17:36:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 17:36:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 17:36:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 17:36:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 17:36:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 17:36:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 17:36:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 17:36:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 17:36:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 17:36:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 17:36:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 17:36:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 17:36:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 17:36:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 17:36:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 17:36:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 17:36:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 17:36:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 17:36:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 17:36:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 17:36:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 17:36:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 17:36:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 17:36:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 17:36:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 17:36:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 17:36:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 17:36:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 17:36:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 17:36:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 17:36:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 17:36:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 17:36:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 17:36:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 17:36:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 17:36:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 17:36:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 17:36:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 17:36:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:36:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 17:36:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-13 17:36:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 17:36:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:36:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 17:36:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 17:36:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 17:36:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:36:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:36:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:36:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:36:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 17:36:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:36:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:36:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:36:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 17:36:19,035 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 17:36:23,443 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:36:23,443 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-13 17:36:23,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:36:23 BoogieIcfgContainer [2021-11-13 17:36:23,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:36:23,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:36:23,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:36:23,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:36:23,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:36:15" (1/3) ... [2021-11-13 17:36:23,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ecce4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:36:23, skipping insertion in model container [2021-11-13 17:36:23,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:16" (2/3) ... [2021-11-13 17:36:23,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ecce4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:36:23, skipping insertion in model container [2021-11-13 17:36:23,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:36:23" (3/3) ... [2021-11-13 17:36:23,457 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test9-2.i [2021-11-13 17:36:23,462 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:36:23,463 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-13 17:36:23,511 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:36:23,519 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 17:36:23,519 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-13 17:36:23,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 2079 states, 1034 states have (on average 2.120889748549323) internal successors, (2193), 2067 states have internal predecessors, (2193), 506 states have call successors, (506), 5 states have call predecessors, (506), 5 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 17:36:23,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 17:36:23,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:23,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:36:23,594 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:36:23,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:23,600 INFO L85 PathProgramCache]: Analyzing trace with hash -409959422, now seen corresponding path program 1 times [2021-11-13 17:36:23,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:36:23,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34493822] [2021-11-13 17:36:23,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:23,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:36:23,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:36:23,616 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:36:23,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:36:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:23,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:36:23,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:36:23,961 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 17:36:23,972 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 17:36:23,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:36:24,013 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 17:36:24,014 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:36:24,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34493822] [2021-11-13 17:36:24,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34493822] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:24,024 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:24,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:36:24,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871580016] [2021-11-13 17:36:24,027 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:24,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:36:24,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:36:24,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:36:24,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:36:24,080 INFO L87 Difference]: Start difference. First operand has 2079 states, 1034 states have (on average 2.120889748549323) internal successors, (2193), 2067 states have internal predecessors, (2193), 506 states have call successors, (506), 5 states have call predecessors, (506), 5 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) 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 17:36:26,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:26,589 INFO L93 Difference]: Finished difference Result 2243 states and 3309 transitions. [2021-11-13 17:36:26,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:36:26,594 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 17:36:26,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:26,653 INFO L225 Difference]: With dead ends: 2243 [2021-11-13 17:36:26,654 INFO L226 Difference]: Without dead ends: 2240 [2021-11-13 17:36:26,655 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 17:36:26,659 INFO L933 BasicCegarLoop]: 2644 mSDtfsCounter, 983 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1836.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 4801 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.80ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2269.07ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:26,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 4801 Invalid, 652 Unknown, 0 Unchecked, 54.80ms Time], IncrementalHoareTripleChecker [16 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 2269.07ms Time] [2021-11-13 17:36:26,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2021-11-13 17:36:27,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 2062. [2021-11-13 17:36:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 1034 states have (on average 2.039651837524178) internal successors, (2109), 2051 states have internal predecessors, (2109), 506 states have call successors, (506), 5 states have call predecessors, (506), 4 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2021-11-13 17:36:27,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 3120 transitions. [2021-11-13 17:36:27,124 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 3120 transitions. Word has length 7 [2021-11-13 17:36:27,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:27,125 INFO L470 AbstractCegarLoop]: Abstraction has 2062 states and 3120 transitions. [2021-11-13 17:36:27,125 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 17:36:27,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 3120 transitions. [2021-11-13 17:36:27,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 17:36:27,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:27,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:36:27,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:36:27,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:36:27,347 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:36:27,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:27,349 INFO L85 PathProgramCache]: Analyzing trace with hash -409959421, now seen corresponding path program 1 times [2021-11-13 17:36:27,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:36:27,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85593431] [2021-11-13 17:36:27,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:27,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:36:27,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:36:27,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:36:27,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 17:36:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:27,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:36:27,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:36:27,561 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 17:36:27,579 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 17:36:27,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:36:27,641 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 17:36:27,641 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:36:27,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85593431] [2021-11-13 17:36:27,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85593431] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:27,642 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:27,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 17:36:27,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323395872] [2021-11-13 17:36:27,642 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:27,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:36:27,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:36:27,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:36:27,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:36:27,644 INFO L87 Difference]: Start difference. First operand 2062 states and 3120 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 17:36:32,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:32,767 INFO L93 Difference]: Finished difference Result 2544 states and 3638 transitions. [2021-11-13 17:36:32,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:36:32,770 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 17:36:32,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:32,788 INFO L225 Difference]: With dead ends: 2544 [2021-11-13 17:36:32,788 INFO L226 Difference]: Without dead ends: 2544 [2021-11-13 17:36:32,789 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 17:36:32,792 INFO L933 BasicCegarLoop]: 2784 mSDtfsCounter, 1601 mSDsluCounter, 2631 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4411.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 5415 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.21ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4999.33ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:32,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1603 Valid, 5415 Invalid, 897 Unknown, 0 Unchecked, 24.21ms Time], IncrementalHoareTripleChecker [19 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 4999.33ms Time] [2021-11-13 17:36:32,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2021-11-13 17:36:32,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2097. [2021-11-13 17:36:32,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 1078 states have (on average 2.0296846011131726) internal successors, (2188), 2086 states have internal predecessors, (2188), 506 states have call successors, (506), 5 states have call predecessors, (506), 4 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2021-11-13 17:36:32,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 3199 transitions. [2021-11-13 17:36:32,998 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 3199 transitions. Word has length 7 [2021-11-13 17:36:32,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:32,998 INFO L470 AbstractCegarLoop]: Abstraction has 2097 states and 3199 transitions. [2021-11-13 17:36:32,998 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 17:36:32,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 3199 transitions. [2021-11-13 17:36:32,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 17:36:32,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:32,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:36:33,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:36:33,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:36:33,211 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:36:33,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:33,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1112436547, now seen corresponding path program 1 times [2021-11-13 17:36:33,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:36:33,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668643756] [2021-11-13 17:36:33,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:33,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:36:33,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:36:33,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:36:33,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 17:36:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:33,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:36:33,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:36:33,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:36:33,486 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 17:36:33,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:36:33,523 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 17:36:33,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:36:33,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668643756] [2021-11-13 17:36:33,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668643756] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:33,525 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:33,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:36:33,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604013509] [2021-11-13 17:36:33,526 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:33,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:36:33,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:36:33,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:36:33,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:36:33,530 INFO L87 Difference]: Start difference. First operand 2097 states and 3199 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 17:36:35,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:35,457 INFO L93 Difference]: Finished difference Result 2263 states and 3383 transitions. [2021-11-13 17:36:35,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:36:35,459 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 17:36:35,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:35,475 INFO L225 Difference]: With dead ends: 2263 [2021-11-13 17:36:35,475 INFO L226 Difference]: Without dead ends: 2263 [2021-11-13 17:36:35,475 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 17:36:35,477 INFO L933 BasicCegarLoop]: 2875 mSDtfsCounter, 804 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1567.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 5140 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.18ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1858.42ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:35,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 5140 Invalid, 681 Unknown, 0 Unchecked, 14.18ms Time], IncrementalHoareTripleChecker [51 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 1858.42ms Time] [2021-11-13 17:36:35,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2021-11-13 17:36:35,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2050. [2021-11-13 17:36:35,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2050 states, 1078 states have (on average 1.9833024118738405) internal successors, (2138), 2039 states have internal predecessors, (2138), 506 states have call successors, (506), 5 states have call predecessors, (506), 4 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2021-11-13 17:36:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 3149 transitions. [2021-11-13 17:36:35,661 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 3149 transitions. Word has length 12 [2021-11-13 17:36:35,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:35,662 INFO L470 AbstractCegarLoop]: Abstraction has 2050 states and 3149 transitions. [2021-11-13 17:36:35,662 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 17:36:35,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 3149 transitions. [2021-11-13 17:36:35,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 17:36:35,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:35,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:36:35,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-13 17:36:35,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:36:35,877 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:36:35,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:35,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1112436548, now seen corresponding path program 1 times [2021-11-13 17:36:35,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:36:35,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460696742] [2021-11-13 17:36:35,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:35,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:36:35,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:36:35,880 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:36:35,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 17:36:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:36:36,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:36:36,111 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 17:36:36,146 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 17:36:36,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:36:36,238 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 17:36:36,238 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:36:36,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460696742] [2021-11-13 17:36:36,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460696742] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:36,239 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:36,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 17:36:36,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737745888] [2021-11-13 17:36:36,239 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:36,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:36:36,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:36:36,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:36:36,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:36:36,241 INFO L87 Difference]: Start difference. First operand 2050 states and 3149 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 17:36:40,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:40,873 INFO L93 Difference]: Finished difference Result 2293 states and 3377 transitions. [2021-11-13 17:36:40,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:36:40,875 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 17:36:40,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:40,890 INFO L225 Difference]: With dead ends: 2293 [2021-11-13 17:36:40,890 INFO L226 Difference]: Without dead ends: 2293 [2021-11-13 17:36:40,891 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 17:36:40,892 INFO L933 BasicCegarLoop]: 3035 mSDtfsCounter, 530 mSDsluCounter, 4844 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4004.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 7879 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.16ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4542.03ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:40,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 7879 Invalid, 1107 Unknown, 0 Unchecked, 22.16ms Time], IncrementalHoareTripleChecker [14 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 4542.03ms Time] [2021-11-13 17:36:40,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2021-11-13 17:36:41,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 2040. [2021-11-13 17:36:41,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 1078 states have (on average 1.971243042671614) internal successors, (2125), 2029 states have internal predecessors, (2125), 506 states have call successors, (506), 5 states have call predecessors, (506), 4 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2021-11-13 17:36:41,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 3136 transitions. [2021-11-13 17:36:41,067 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 3136 transitions. Word has length 12 [2021-11-13 17:36:41,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:41,067 INFO L470 AbstractCegarLoop]: Abstraction has 2040 states and 3136 transitions. [2021-11-13 17:36:41,068 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 17:36:41,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 3136 transitions. [2021-11-13 17:36:41,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 17:36:41,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:41,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:36:41,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:36:41,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:36:41,280 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr429REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:36:41,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:41,281 INFO L85 PathProgramCache]: Analyzing trace with hash -164522606, now seen corresponding path program 1 times [2021-11-13 17:36:41,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:36:41,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226354653] [2021-11-13 17:36:41,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:41,282 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:36:41,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:36:41,283 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:36:41,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 17:36:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:41,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:36:41,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:36:41,577 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 17:36:41,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:36:41,669 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 17:36:41,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:36:41,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226354653] [2021-11-13 17:36:41,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226354653] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:41,670 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:41,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:36:41,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306152856] [2021-11-13 17:36:41,671 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:41,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:36:41,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:36:41,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:36:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:36:41,672 INFO L87 Difference]: Start difference. First operand 2040 states and 3136 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 17:36:42,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:42,051 INFO L93 Difference]: Finished difference Result 2502 states and 3633 transitions. [2021-11-13 17:36:42,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:36:42,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-13 17:36:42,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:42,068 INFO L225 Difference]: With dead ends: 2502 [2021-11-13 17:36:42,068 INFO L226 Difference]: Without dead ends: 2502 [2021-11-13 17:36:42,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 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 17:36:42,070 INFO L933 BasicCegarLoop]: 3116 mSDtfsCounter, 558 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 267.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 6012 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.08ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 314.51ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:42,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 6012 Invalid, 119 Unknown, 0 Unchecked, 11.08ms Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 314.51ms Time] [2021-11-13 17:36:42,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2021-11-13 17:36:42,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 2209. [2021-11-13 17:36:42,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 1246 states have (on average 1.9382022471910112) internal successors, (2415), 2197 states have internal predecessors, (2415), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 17:36:42,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3428 transitions. [2021-11-13 17:36:42,290 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3428 transitions. Word has length 15 [2021-11-13 17:36:42,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:42,291 INFO L470 AbstractCegarLoop]: Abstraction has 2209 states and 3428 transitions. [2021-11-13 17:36:42,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 17:36:42,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3428 transitions. [2021-11-13 17:36:42,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 17:36:42,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:42,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:36:42,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:36:42,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:36:42,505 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr340REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:36:42,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:42,506 INFO L85 PathProgramCache]: Analyzing trace with hash 469915093, now seen corresponding path program 1 times [2021-11-13 17:36:42,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:36:42,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198232274] [2021-11-13 17:36:42,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:42,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:36:42,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:36:42,510 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:36:42,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 17:36:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:42,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:36:42,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:36:42,757 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 17:36:42,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:36:42,801 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 17:36:42,801 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:36:42,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198232274] [2021-11-13 17:36:42,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198232274] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:42,802 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:42,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:36:42,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515007306] [2021-11-13 17:36:42,802 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:42,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:36:42,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:36:42,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:36:42,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:36:42,804 INFO L87 Difference]: Start difference. First operand 2209 states and 3428 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 17:36:42,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:42,874 INFO L93 Difference]: Finished difference Result 2363 states and 3568 transitions. [2021-11-13 17:36:42,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:36:42,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-13 17:36:42,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:42,892 INFO L225 Difference]: With dead ends: 2363 [2021-11-13 17:36:42,892 INFO L226 Difference]: Without dead ends: 2363 [2021-11-13 17:36:42,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 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 17:36:42,894 INFO L933 BasicCegarLoop]: 3211 mSDtfsCounter, 784 mSDsluCounter, 2828 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 6039 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.60ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.89ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:42,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 6039 Invalid, 13 Unknown, 0 Unchecked, 8.60ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 17.89ms Time] [2021-11-13 17:36:42,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2021-11-13 17:36:43,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2149. [2021-11-13 17:36:43,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1210 states have (on average 1.9247933884297521) internal successors, (2329), 2137 states have internal predecessors, (2329), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 17:36:43,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3342 transitions. [2021-11-13 17:36:43,089 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3342 transitions. Word has length 17 [2021-11-13 17:36:43,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:43,090 INFO L470 AbstractCegarLoop]: Abstraction has 2149 states and 3342 transitions. [2021-11-13 17:36:43,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 17:36:43,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3342 transitions. [2021-11-13 17:36:43,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 17:36:43,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:43,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:36:43,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:36:43,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:36:43,304 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr431REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:36:43,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:43,304 INFO L85 PathProgramCache]: Analyzing trace with hash -725148639, now seen corresponding path program 1 times [2021-11-13 17:36:43,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:36:43,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929811000] [2021-11-13 17:36:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:43,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:36:43,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:36:43,305 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:36:43,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 17:36:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:43,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:36:43,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:36:43,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:36:43,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:36:43,673 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 17:36:43,673 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:36:43,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929811000] [2021-11-13 17:36:43,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929811000] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:43,674 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:43,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:36:43,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031240256] [2021-11-13 17:36:43,674 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:43,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:36:43,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:36:43,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:36:43,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:36:43,676 INFO L87 Difference]: Start difference. First operand 2149 states and 3342 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 17:36:44,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:44,413 INFO L93 Difference]: Finished difference Result 2420 states and 3549 transitions. [2021-11-13 17:36:44,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:36:44,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 18 [2021-11-13 17:36:44,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:44,443 INFO L225 Difference]: With dead ends: 2420 [2021-11-13 17:36:44,443 INFO L226 Difference]: Without dead ends: 2420 [2021-11-13 17:36:44,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 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 17:36:44,445 INFO L933 BasicCegarLoop]: 3072 mSDtfsCounter, 523 mSDsluCounter, 5817 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 580.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 8889 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.64ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 674.72ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:44,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 8889 Invalid, 260 Unknown, 0 Unchecked, 13.64ms Time], IncrementalHoareTripleChecker [7 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 674.72ms Time] [2021-11-13 17:36:44,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2021-11-13 17:36:44,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2151. [2021-11-13 17:36:44,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 1212 states have (on average 1.9232673267326732) internal successors, (2331), 2139 states have internal predecessors, (2331), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 17:36:44,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 3344 transitions. [2021-11-13 17:36:44,672 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 3344 transitions. Word has length 18 [2021-11-13 17:36:44,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:44,672 INFO L470 AbstractCegarLoop]: Abstraction has 2151 states and 3344 transitions. [2021-11-13 17:36:44,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 17:36:44,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 3344 transitions. [2021-11-13 17:36:44,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 17:36:44,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:44,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:36:44,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 17:36:44,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:36:44,886 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr534ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:36:44,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:44,886 INFO L85 PathProgramCache]: Analyzing trace with hash -725141857, now seen corresponding path program 1 times [2021-11-13 17:36:44,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:36:44,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385368822] [2021-11-13 17:36:44,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:44,887 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:36:44,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:36:44,888 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:36:44,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 17:36:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:45,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:36:45,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:36:45,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:36:45,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:36:45,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:36:45,170 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 17:36:45,170 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 17:36:45,230 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 17:36:45,230 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 17:36:45,262 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 17:36:45,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:36:45,342 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 17:36:45,343 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:36:45,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385368822] [2021-11-13 17:36:45,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385368822] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:45,343 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:45,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 17:36:45,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234517556] [2021-11-13 17:36:45,343 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:45,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:36:45,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:36:45,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:36:45,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:36:45,344 INFO L87 Difference]: Start difference. First operand 2151 states and 3344 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 17:36:47,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:47,413 INFO L93 Difference]: Finished difference Result 2466 states and 3692 transitions. [2021-11-13 17:36:47,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:36:47,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2021-11-13 17:36:47,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:47,431 INFO L225 Difference]: With dead ends: 2466 [2021-11-13 17:36:47,432 INFO L226 Difference]: Without dead ends: 2466 [2021-11-13 17:36:47,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 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 17:36:47,433 INFO L933 BasicCegarLoop]: 2969 mSDtfsCounter, 330 mSDsluCounter, 11656 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1727.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 14625 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.85ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1965.80ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:47,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 14625 Invalid, 401 Unknown, 0 Unchecked, 22.85ms Time], IncrementalHoareTripleChecker [2 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 1965.80ms Time] [2021-11-13 17:36:47,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2021-11-13 17:36:47,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2150. [2021-11-13 17:36:47,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 1211 states have (on average 1.9232039636663913) internal successors, (2329), 2138 states have internal predecessors, (2329), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 17:36:47,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3342 transitions. [2021-11-13 17:36:47,643 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3342 transitions. Word has length 18 [2021-11-13 17:36:47,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:47,643 INFO L470 AbstractCegarLoop]: Abstraction has 2150 states and 3342 transitions. [2021-11-13 17:36:47,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 17:36:47,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3342 transitions. [2021-11-13 17:36:47,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 17:36:47,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:47,645 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 17:36:47,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 17:36:47,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:36:47,859 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr15REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:36:47,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:47,859 INFO L85 PathProgramCache]: Analyzing trace with hash -269312016, now seen corresponding path program 1 times [2021-11-13 17:36:47,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:36:47,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438132695] [2021-11-13 17:36:47,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:47,860 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:36:47,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:36:47,864 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:36:47,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 17:36:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:48,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:36:48,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:36:48,104 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 17:36:48,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:36:48,154 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 17:36:48,155 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:36:48,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438132695] [2021-11-13 17:36:48,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438132695] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:48,155 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:48,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:36:48,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104208167] [2021-11-13 17:36:48,156 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:48,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:36:48,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:36:48,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:36:48,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:36:48,157 INFO L87 Difference]: Start difference. First operand 2150 states and 3342 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 17:36:48,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:48,212 INFO L93 Difference]: Finished difference Result 2090 states and 3256 transitions. [2021-11-13 17:36:48,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:36:48,213 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 17:36:48,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:48,226 INFO L225 Difference]: With dead ends: 2090 [2021-11-13 17:36:48,226 INFO L226 Difference]: Without dead ends: 2090 [2021-11-13 17:36:48,226 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 17:36:48,227 INFO L933 BasicCegarLoop]: 2963 mSDtfsCounter, 933 mSDsluCounter, 4072 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 7035 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.38ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.90ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:48,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [937 Valid, 7035 Invalid, 12 Unknown, 0 Unchecked, 9.38ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 15.90ms Time] [2021-11-13 17:36:48,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2021-11-13 17:36:48,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 2090. [2021-11-13 17:36:48,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 1175 states have (on average 1.9089361702127658) internal successors, (2243), 2078 states have internal predecessors, (2243), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 17:36:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3256 transitions. [2021-11-13 17:36:48,425 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3256 transitions. Word has length 22 [2021-11-13 17:36:48,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:48,425 INFO L470 AbstractCegarLoop]: Abstraction has 2090 states and 3256 transitions. [2021-11-13 17:36:48,425 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 17:36:48,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3256 transitions. [2021-11-13 17:36:48,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 17:36:48,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:48,428 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 17:36:48,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 17:36:48,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:36:48,640 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:36:48,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:48,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1110716631, now seen corresponding path program 1 times [2021-11-13 17:36:48,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:36:48,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922758619] [2021-11-13 17:36:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:48,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:36:48,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:36:48,642 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:36:48,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 17:36:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:48,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:36:48,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:36:48,874 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 17:36:48,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:36:48,931 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 17:36:48,931 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:36:48,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922758619] [2021-11-13 17:36:48,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922758619] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:48,932 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:48,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 17:36:48,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194203095] [2021-11-13 17:36:48,932 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:48,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:36:48,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:36:48,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:36:48,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:36:48,934 INFO L87 Difference]: Start difference. First operand 2090 states and 3256 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 17:36:49,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:49,046 INFO L93 Difference]: Finished difference Result 2062 states and 3200 transitions. [2021-11-13 17:36:49,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:36:49,046 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 17:36:49,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:49,061 INFO L225 Difference]: With dead ends: 2062 [2021-11-13 17:36:49,061 INFO L226 Difference]: Without dead ends: 2062 [2021-11-13 17:36:49,061 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 17:36:49,062 INFO L933 BasicCegarLoop]: 2918 mSDtfsCounter, 1798 mSDsluCounter, 4948 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 7866 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.86ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.15ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:49,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1802 Valid, 7866 Invalid, 78 Unknown, 0 Unchecked, 14.86ms Time], IncrementalHoareTripleChecker [46 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 59.15ms Time] [2021-11-13 17:36:49,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2021-11-13 17:36:49,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 2060. [2021-11-13 17:36:49,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 1159 states have (on average 1.8852459016393444) internal successors, (2185), 2048 states have internal predecessors, (2185), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 17:36:49,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 3198 transitions. [2021-11-13 17:36:49,264 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 3198 transitions. Word has length 24 [2021-11-13 17:36:49,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:49,265 INFO L470 AbstractCegarLoop]: Abstraction has 2060 states and 3198 transitions. [2021-11-13 17:36:49,265 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 17:36:49,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 3198 transitions. [2021-11-13 17:36:49,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 17:36:49,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:49,266 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 17:36:49,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 17:36:49,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:36:49,478 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:36:49,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:49,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1089939529, now seen corresponding path program 1 times [2021-11-13 17:36:49,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:36:49,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494959567] [2021-11-13 17:36:49,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:49,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:36:49,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:36:49,481 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:36:49,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 17:36:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:49,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:36:49,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:36:49,719 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 17:36:49,843 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 17:36:49,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:36:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:36:49,980 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:36:49,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494959567] [2021-11-13 17:36:49,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494959567] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:49,981 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:49,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:36:49,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452604596] [2021-11-13 17:36:49,981 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:49,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:36:49,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:36:49,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:36:49,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:36:49,983 INFO L87 Difference]: Start difference. First operand 2060 states and 3198 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 17:36:52,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:52,247 INFO L93 Difference]: Finished difference Result 2493 states and 3697 transitions. [2021-11-13 17:36:52,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:36:52,248 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 17:36:52,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:52,264 INFO L225 Difference]: With dead ends: 2493 [2021-11-13 17:36:52,265 INFO L226 Difference]: Without dead ends: 2493 [2021-11-13 17:36:52,265 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 17:36:52,266 INFO L933 BasicCegarLoop]: 2498 mSDtfsCounter, 1443 mSDsluCounter, 4529 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1855.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 7027 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.91ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2185.10ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:52,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1443 Valid, 7027 Invalid, 894 Unknown, 0 Unchecked, 18.91ms Time], IncrementalHoareTripleChecker [21 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 2185.10ms Time] [2021-11-13 17:36:52,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2021-11-13 17:36:52,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2056. [2021-11-13 17:36:52,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 1159 states have (on average 1.8783433994823124) internal successors, (2177), 2044 states have internal predecessors, (2177), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 17:36:52,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 3190 transitions. [2021-11-13 17:36:52,451 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 3190 transitions. Word has length 38 [2021-11-13 17:36:52,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:52,452 INFO L470 AbstractCegarLoop]: Abstraction has 2056 states and 3190 transitions. [2021-11-13 17:36:52,452 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 17:36:52,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 3190 transitions. [2021-11-13 17:36:52,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 17:36:52,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:52,453 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 17:36:52,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 17:36:52,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:36:52,670 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:36:52,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:52,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1089939528, now seen corresponding path program 1 times [2021-11-13 17:36:52,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:36:52,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849621082] [2021-11-13 17:36:52,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:52,671 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:36:52,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:36:52,672 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:36:52,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 17:36:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:52,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:36:52,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:36:52,897 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 17:36:53,158 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 17:36:53,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:36:53,684 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 17:36:53,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:36:53,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849621082] [2021-11-13 17:36:53,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849621082] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:53,685 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:53,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:36:53,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361819871] [2021-11-13 17:36:53,686 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:53,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:36:53,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:36:53,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:36:53,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:36:53,689 INFO L87 Difference]: Start difference. First operand 2056 states and 3190 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 17:37:00,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:00,475 INFO L93 Difference]: Finished difference Result 2547 states and 3714 transitions. [2021-11-13 17:37:00,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:37:00,477 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 17:37:00,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:00,486 INFO L225 Difference]: With dead ends: 2547 [2021-11-13 17:37:00,486 INFO L226 Difference]: Without dead ends: 2547 [2021-11-13 17:37:00,487 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 17:37:00,487 INFO L933 BasicCegarLoop]: 3135 mSDtfsCounter, 1341 mSDsluCounter, 7356 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5855.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 10491 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.23ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6623.90ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:00,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 10491 Invalid, 1617 Unknown, 0 Unchecked, 22.23ms Time], IncrementalHoareTripleChecker [13 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 6623.90ms Time] [2021-11-13 17:37:00,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2021-11-13 17:37:00,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2052. [2021-11-13 17:37:00,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 1159 states have (on average 1.8714408973252805) internal successors, (2169), 2040 states have internal predecessors, (2169), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 17:37:00,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 3182 transitions. [2021-11-13 17:37:00,676 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 3182 transitions. Word has length 38 [2021-11-13 17:37:00,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:00,677 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 3182 transitions. [2021-11-13 17:37:00,677 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 17:37:00,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 3182 transitions. [2021-11-13 17:37:00,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-13 17:37:00,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:00,679 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] [2021-11-13 17:37:00,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:00,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:37:00,890 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:37:00,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:00,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1864679286, now seen corresponding path program 1 times [2021-11-13 17:37:00,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:37:00,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836368895] [2021-11-13 17:37:00,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:00,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:37:00,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:37:00,893 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:37:00,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 17:37:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:01,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:37:01,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:01,270 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 17:37:01,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:37:01,394 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 17:37:01,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:37:01,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836368895] [2021-11-13 17:37:01,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836368895] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:01,394 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:01,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:37:01,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195895027] [2021-11-13 17:37:01,395 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:01,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:37:01,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:37:01,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:37:01,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:37:01,396 INFO L87 Difference]: Start difference. First operand 2052 states and 3182 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:37:01,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:01,473 INFO L93 Difference]: Finished difference Result 2040 states and 3162 transitions. [2021-11-13 17:37:01,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:37:01,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-11-13 17:37:01,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:01,481 INFO L225 Difference]: With dead ends: 2040 [2021-11-13 17:37:01,481 INFO L226 Difference]: Without dead ends: 2040 [2021-11-13 17:37:01,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 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 17:37:01,483 INFO L933 BasicCegarLoop]: 2912 mSDtfsCounter, 880 mSDsluCounter, 4932 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 7844 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.85ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.80ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:01,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 7844 Invalid, 41 Unknown, 0 Unchecked, 8.85ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 33.80ms Time] [2021-11-13 17:37:01,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2021-11-13 17:37:01,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 2040. [2021-11-13 17:37:01,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 1147 states have (on average 1.873583260680035) internal successors, (2149), 2028 states have internal predecessors, (2149), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 17:37:01,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 3162 transitions. [2021-11-13 17:37:01,653 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 3162 transitions. Word has length 56 [2021-11-13 17:37:01,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:01,654 INFO L470 AbstractCegarLoop]: Abstraction has 2040 states and 3162 transitions. [2021-11-13 17:37:01,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:37:01,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 3162 transitions. [2021-11-13 17:37:01,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 17:37:01,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:01,655 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 17:37:01,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:01,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:37:01,870 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:37:01,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:01,871 INFO L85 PathProgramCache]: Analyzing trace with hash -324235966, now seen corresponding path program 1 times [2021-11-13 17:37:01,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:37:01,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605336933] [2021-11-13 17:37:01,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:01,872 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:37:01,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:37:01,873 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:37:01,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 17:37:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:37:02,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:02,276 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 17:37:02,282 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 17:37:02,968 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 17:37:02,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-13 17:37:02,975 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 17:37:02,976 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 25 treesize of output 21 [2021-11-13 17:37:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:37:03,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:37:07,911 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 17:37:07,911 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:37:07,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605336933] [2021-11-13 17:37:07,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605336933] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:07,912 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:07,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:37:07,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467001353] [2021-11-13 17:37:07,912 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:07,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:37:07,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:37:07,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:37:07,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 17:37:07,914 INFO L87 Difference]: Start difference. First operand 2040 states and 3162 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 17:37:12,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:12,804 INFO L93 Difference]: Finished difference Result 2439 states and 3595 transitions. [2021-11-13 17:37:12,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:37:12,806 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 17:37:12,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:12,811 INFO L225 Difference]: With dead ends: 2439 [2021-11-13 17:37:12,811 INFO L226 Difference]: Without dead ends: 2439 [2021-11-13 17:37:12,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-13 17:37:12,812 INFO L933 BasicCegarLoop]: 2736 mSDtfsCounter, 1089 mSDsluCounter, 4727 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4123.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 7463 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.30ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 888 IncrementalHoareTripleChecker+Unchecked, 4746.89ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:12,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 7463 Invalid, 2010 Unknown, 0 Unchecked, 21.30ms Time], IncrementalHoareTripleChecker [45 Valid, 1077 Invalid, 0 Unknown, 888 Unchecked, 4746.89ms Time] [2021-11-13 17:37:12,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2021-11-13 17:37:12,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2018. [2021-11-13 17:37:12,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 1157 states have (on average 1.8452895419187554) internal successors, (2135), 2006 states have internal predecessors, (2135), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 17:37:12,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 3148 transitions. [2021-11-13 17:37:12,947 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 3148 transitions. Word has length 64 [2021-11-13 17:37:12,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:12,948 INFO L470 AbstractCegarLoop]: Abstraction has 2018 states and 3148 transitions. [2021-11-13 17:37:12,948 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 17:37:12,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 3148 transitions. [2021-11-13 17:37:12,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 17:37:12,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:12,949 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 17:37:12,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:13,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:37:13,164 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:37:13,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:13,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1941954499, now seen corresponding path program 1 times [2021-11-13 17:37:13,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:37:13,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658851733] [2021-11-13 17:37:13,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:13,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:37:13,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:37:13,167 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:37:13,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 17:37:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:13,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:37:13,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:13,660 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 17:37:13,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:37:13,714 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 17:37:13,994 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 17:37:13,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:37:13,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658851733] [2021-11-13 17:37:13,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658851733] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:13,995 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:13,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:37:13,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820663419] [2021-11-13 17:37:13,995 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:13,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:37:13,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:37:13,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:37:13,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:37:13,996 INFO L87 Difference]: Start difference. First operand 2018 states and 3148 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 17:37:15,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:15,337 INFO L93 Difference]: Finished difference Result 2016 states and 3146 transitions. [2021-11-13 17:37:15,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:37:15,339 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 17:37:15,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:15,345 INFO L225 Difference]: With dead ends: 2016 [2021-11-13 17:37:15,345 INFO L226 Difference]: Without dead ends: 2016 [2021-11-13 17:37:15,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:37:15,346 INFO L933 BasicCegarLoop]: 2583 mSDtfsCounter, 1797 mSDsluCounter, 2237 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1104.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1801 SdHoareTripleChecker+Valid, 4820 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.03ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1297.31ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:15,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1801 Valid, 4820 Invalid, 362 Unknown, 0 Unchecked, 9.03ms Time], IncrementalHoareTripleChecker [24 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 1297.31ms Time] [2021-11-13 17:37:15,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2021-11-13 17:37:15,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 2016. [2021-11-13 17:37:15,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1157 states have (on average 1.8435609334485739) internal successors, (2133), 2004 states have internal predecessors, (2133), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 17:37:15,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 3146 transitions. [2021-11-13 17:37:15,476 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 3146 transitions. Word has length 66 [2021-11-13 17:37:15,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:15,476 INFO L470 AbstractCegarLoop]: Abstraction has 2016 states and 3146 transitions. [2021-11-13 17:37:15,477 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 17:37:15,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 3146 transitions. [2021-11-13 17:37:15,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 17:37:15,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:15,478 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 17:37:15,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:15,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:37:15,691 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:37:15,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:15,691 INFO L85 PathProgramCache]: Analyzing trace with hash -439724449, now seen corresponding path program 1 times [2021-11-13 17:37:15,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:37:15,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412945080] [2021-11-13 17:37:15,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:15,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:37:15,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:37:15,693 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:37:15,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 17:37:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:15,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:37:15,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:16,064 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 17:37:16,082 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 17:37:16,122 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 17:37:16,139 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 17:37:16,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:37:16,256 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 17:37:16,256 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:37:16,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412945080] [2021-11-13 17:37:16,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412945080] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:16,256 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:16,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:37:16,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972080866] [2021-11-13 17:37:16,257 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:16,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:37:16,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:37:16,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:37:16,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:37:16,258 INFO L87 Difference]: Start difference. First operand 2016 states and 3146 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 17:37:19,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:19,170 INFO L93 Difference]: Finished difference Result 2015 states and 3145 transitions. [2021-11-13 17:37:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:37:19,170 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 17:37:19,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:19,174 INFO L225 Difference]: With dead ends: 2015 [2021-11-13 17:37:19,174 INFO L226 Difference]: Without dead ends: 2015 [2021-11-13 17:37:19,175 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 17:37:19,175 INFO L933 BasicCegarLoop]: 2876 mSDtfsCounter, 4 mSDsluCounter, 7386 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2447.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10262 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.98ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2827.10ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:19,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 10262 Invalid, 1248 Unknown, 0 Unchecked, 16.98ms Time], IncrementalHoareTripleChecker [1 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 2827.10ms Time] [2021-11-13 17:37:19,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2021-11-13 17:37:19,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 2015. [2021-11-13 17:37:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 1157 states have (on average 1.8426966292134832) internal successors, (2132), 2003 states have internal predecessors, (2132), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 17:37:19,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 3145 transitions. [2021-11-13 17:37:19,304 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 3145 transitions. Word has length 69 [2021-11-13 17:37:19,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:19,304 INFO L470 AbstractCegarLoop]: Abstraction has 2015 states and 3145 transitions. [2021-11-13 17:37:19,304 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 17:37:19,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 3145 transitions. [2021-11-13 17:37:19,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 17:37:19,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:19,306 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 17:37:19,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:19,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:37:19,519 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:37:19,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:19,520 INFO L85 PathProgramCache]: Analyzing trace with hash -439724448, now seen corresponding path program 1 times [2021-11-13 17:37:19,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:37:19,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760809627] [2021-11-13 17:37:19,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:19,520 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:37:19,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:37:19,521 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:37:19,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 17:37:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:19,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:37:19,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:19,881 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 17:37:19,909 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 17:37:19,917 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 17:37:19,972 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 17:37:19,975 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 17:37:20,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:37:20,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:37:20,320 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 17:37:20,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:37:20,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760809627] [2021-11-13 17:37:20,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760809627] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:20,321 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:20,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 17:37:20,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116171808] [2021-11-13 17:37:20,322 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:20,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:37:20,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:37:20,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:37:20,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:37:20,323 INFO L87 Difference]: Start difference. First operand 2015 states and 3145 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 17:37:28,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:28,255 INFO L93 Difference]: Finished difference Result 2014 states and 3144 transitions. [2021-11-13 17:37:28,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:37:28,258 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 17:37:28,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:28,264 INFO L225 Difference]: With dead ends: 2014 [2021-11-13 17:37:28,264 INFO L226 Difference]: Without dead ends: 2014 [2021-11-13 17:37:28,265 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 17:37:28,265 INFO L933 BasicCegarLoop]: 2876 mSDtfsCounter, 3 mSDsluCounter, 9866 mSDsCounter, 0 mSdLazyCounter, 1639 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7018.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12742 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.02ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7798.87ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:28,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 12742 Invalid, 1641 Unknown, 0 Unchecked, 24.02ms Time], IncrementalHoareTripleChecker [2 Valid, 1639 Invalid, 0 Unknown, 0 Unchecked, 7798.87ms Time] [2021-11-13 17:37:28,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2021-11-13 17:37:28,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 2014. [2021-11-13 17:37:28,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2014 states, 1156 states have (on average 1.8434256055363323) internal successors, (2131), 2002 states have internal predecessors, (2131), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-13 17:37:28,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 3144 transitions. [2021-11-13 17:37:28,423 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 3144 transitions. Word has length 69 [2021-11-13 17:37:28,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:28,423 INFO L470 AbstractCegarLoop]: Abstraction has 2014 states and 3144 transitions. [2021-11-13 17:37:28,424 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 17:37:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 3144 transitions. [2021-11-13 17:37:28,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-13 17:37:28,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:28,425 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 17:37:28,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:28,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:37:28,638 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:37:28,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:28,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1238822906, now seen corresponding path program 1 times [2021-11-13 17:37:28,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:37:28,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533881605] [2021-11-13 17:37:28,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:28,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:37:28,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:37:28,641 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:37:28,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 17:37:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:28,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:37:28,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:29,129 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 17:37:29,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:37:29,302 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 17:37:29,303 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:37:29,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533881605] [2021-11-13 17:37:29,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533881605] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:29,303 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:29,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 17:37:29,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921121762] [2021-11-13 17:37:29,304 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:29,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:37:29,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:37:29,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:37:29,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:37:29,305 INFO L87 Difference]: Start difference. First operand 2014 states and 3144 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 17:37:29,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:29,484 INFO L93 Difference]: Finished difference Result 2024 states and 3157 transitions. [2021-11-13 17:37:29,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:37:29,486 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 17:37:29,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:29,500 INFO L225 Difference]: With dead ends: 2024 [2021-11-13 17:37:29,500 INFO L226 Difference]: Without dead ends: 2024 [2021-11-13 17:37:29,501 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 17:37:29,504 INFO L933 BasicCegarLoop]: 2876 mSDtfsCounter, 9 mSDsluCounter, 8617 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11493 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.99ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100.17ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:29,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 11493 Invalid, 39 Unknown, 0 Unchecked, 17.99ms Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 100.17ms Time] [2021-11-13 17:37:29,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2021-11-13 17:37:29,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 2024. [2021-11-13 17:37:29,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 1164 states have (on average 1.8410652920962198) internal successors, (2143), 2011 states have internal predecessors, (2143), 507 states have call successors, (507), 6 states have call predecessors, (507), 6 states have return successors, (507), 7 states have call predecessors, (507), 506 states have call successors, (507) [2021-11-13 17:37:29,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 3157 transitions. [2021-11-13 17:37:29,696 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 3157 transitions. Word has length 77 [2021-11-13 17:37:29,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:29,697 INFO L470 AbstractCegarLoop]: Abstraction has 2024 states and 3157 transitions. [2021-11-13 17:37:29,697 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 17:37:29,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 3157 transitions. [2021-11-13 17:37:29,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-13 17:37:29,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:29,698 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 17:37:29,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:29,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:37:29,912 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:37:29,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:29,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1826990010, now seen corresponding path program 1 times [2021-11-13 17:37:29,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:37:29,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523921180] [2021-11-13 17:37:29,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:29,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:37:29,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:37:29,915 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:37:29,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 17:37:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:30,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:37:30,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:30,436 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 17:37:30,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:37:30,718 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 17:37:30,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:37:30,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523921180] [2021-11-13 17:37:30,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523921180] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:37:30,719 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:37:30,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 17:37:30,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286050298] [2021-11-13 17:37:30,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:37:30,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:37:30,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:37:30,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:37:30,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:37:30,720 INFO L87 Difference]: Start difference. First operand 2024 states and 3157 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 17:37:31,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:31,205 INFO L93 Difference]: Finished difference Result 2038 states and 3175 transitions. [2021-11-13 17:37:31,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:37:31,206 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 17:37:31,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:31,210 INFO L225 Difference]: With dead ends: 2038 [2021-11-13 17:37:31,211 INFO L226 Difference]: Without dead ends: 2034 [2021-11-13 17:37:31,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:37:31,212 INFO L933 BasicCegarLoop]: 2878 mSDtfsCounter, 26 mSDsluCounter, 17236 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 201.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 20114 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.90ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 228.07ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:31,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 20114 Invalid, 122 Unknown, 0 Unchecked, 18.90ms Time], IncrementalHoareTripleChecker [17 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 228.07ms Time] [2021-11-13 17:37:31,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2034 states. [2021-11-13 17:37:31,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2034 to 2030. [2021-11-13 17:37:31,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2030 states, 1170 states have (on average 1.8384615384615384) internal successors, (2151), 2017 states have internal predecessors, (2151), 507 states have call successors, (507), 6 states have call predecessors, (507), 6 states have return successors, (507), 7 states have call predecessors, (507), 506 states have call successors, (507) [2021-11-13 17:37:31,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 3165 transitions. [2021-11-13 17:37:31,414 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 3165 transitions. Word has length 79 [2021-11-13 17:37:31,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:31,415 INFO L470 AbstractCegarLoop]: Abstraction has 2030 states and 3165 transitions. [2021-11-13 17:37:31,415 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 17:37:31,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 3165 transitions. [2021-11-13 17:37:31,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 17:37:31,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:31,416 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 17:37:31,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:31,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:37:31,630 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:37:31,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:31,630 INFO L85 PathProgramCache]: Analyzing trace with hash -278021946, now seen corresponding path program 2 times [2021-11-13 17:37:31,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:37:31,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010763114] [2021-11-13 17:37:31,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:37:31,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:37:31,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:37:31,633 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:37:31,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 17:37:32,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 17:37:32,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:37:32,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 17:37:32,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:32,466 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 17:37:32,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:37:32,958 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 17:37:32,959 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:37:32,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010763114] [2021-11-13 17:37:32,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010763114] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:37:32,959 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:37:32,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-13 17:37:32,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831652882] [2021-11-13 17:37:32,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:37:32,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 17:37:32,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:37:32,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 17:37:32,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:37:32,961 INFO L87 Difference]: Start difference. First operand 2030 states and 3165 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 17:37:34,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:34,406 INFO L93 Difference]: Finished difference Result 2058 states and 3203 transitions. [2021-11-13 17:37:34,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 17:37:34,407 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 17:37:34,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:34,414 INFO L225 Difference]: With dead ends: 2058 [2021-11-13 17:37:34,414 INFO L226 Difference]: Without dead ends: 2054 [2021-11-13 17:37:34,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-13 17:37:34,416 INFO L933 BasicCegarLoop]: 2882 mSDtfsCounter, 89 mSDsluCounter, 20149 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 496.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 23031 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.86ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 571.08ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:34,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 23031 Invalid, 356 Unknown, 0 Unchecked, 25.86ms Time], IncrementalHoareTripleChecker [55 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 571.08ms Time] [2021-11-13 17:37:34,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2021-11-13 17:37:34,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 2042. [2021-11-13 17:37:34,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2042 states, 1182 states have (on average 1.8333333333333333) internal successors, (2167), 2029 states have internal predecessors, (2167), 507 states have call successors, (507), 6 states have call predecessors, (507), 6 states have return successors, (507), 7 states have call predecessors, (507), 506 states have call successors, (507) [2021-11-13 17:37:34,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 3181 transitions. [2021-11-13 17:37:34,612 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 3181 transitions. Word has length 83 [2021-11-13 17:37:34,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:34,612 INFO L470 AbstractCegarLoop]: Abstraction has 2042 states and 3181 transitions. [2021-11-13 17:37:34,612 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 17:37:34,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 3181 transitions. [2021-11-13 17:37:34,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-13 17:37:34,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:34,614 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 17:37:34,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:34,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:37:34,832 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:37:34,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:34,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1598536134, now seen corresponding path program 3 times [2021-11-13 17:37:34,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:37:34,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701123068] [2021-11-13 17:37:34,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 17:37:34,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:37:34,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:37:34,834 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:37:34,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 17:37:35,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 17:37:35,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:37:35,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 17:37:35,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:36,144 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 17:37:36,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:37:37,891 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 17:37:37,892 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:37:37,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701123068] [2021-11-13 17:37:37,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [701123068] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:37:37,893 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:37:37,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-13 17:37:37,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353659851] [2021-11-13 17:37:37,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:37:37,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-13 17:37:37,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:37:37,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-13 17:37:37,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 17:37:37,895 INFO L87 Difference]: Start difference. First operand 2042 states and 3181 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 17:37:45,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:45,930 INFO L93 Difference]: Finished difference Result 2098 states and 3265 transitions. [2021-11-13 17:37:45,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-13 17:37:45,931 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 17:37:45,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:45,940 INFO L225 Difference]: With dead ends: 2098 [2021-11-13 17:37:45,940 INFO L226 Difference]: Without dead ends: 2092 [2021-11-13 17:37:45,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-13 17:37:45,945 INFO L933 BasicCegarLoop]: 2889 mSDtfsCounter, 211 mSDsluCounter, 57623 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2142.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 60512 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.18ms SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2413.72ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:45,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 60512 Invalid, 1506 Unknown, 0 Unchecked, 50.18ms Time], IncrementalHoareTripleChecker [179 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 2413.72ms Time] [2021-11-13 17:37:45,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2021-11-13 17:37:46,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 2066. [2021-11-13 17:37:46,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2066 states, 1206 states have (on average 1.8225538971807629) internal successors, (2198), 2053 states have internal predecessors, (2198), 507 states have call successors, (507), 6 states have call predecessors, (507), 6 states have return successors, (507), 7 states have call predecessors, (507), 506 states have call successors, (507) [2021-11-13 17:37:46,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 3212 transitions. [2021-11-13 17:37:46,149 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 3212 transitions. Word has length 91 [2021-11-13 17:37:46,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:46,149 INFO L470 AbstractCegarLoop]: Abstraction has 2066 states and 3212 transitions. [2021-11-13 17:37:46,150 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 17:37:46,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 3212 transitions. [2021-11-13 17:37:46,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-13 17:37:46,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:46,151 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 17:37:46,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:46,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:37:46,374 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:37:46,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:46,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1085752378, now seen corresponding path program 4 times [2021-11-13 17:37:46,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:37:46,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614650011] [2021-11-13 17:37:46,376 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 17:37:46,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:37:46,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:37:46,377 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:37:46,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-13 17:37:46,692 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 17:37:46,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:37:46,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-13 17:37:46,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:47,850 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 17:37:47,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:37:51,807 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 17:37:51,807 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:37:51,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614650011] [2021-11-13 17:37:51,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614650011] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:37:51,807 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:37:51,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-13 17:37:51,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734371765] [2021-11-13 17:37:51,810 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:37:51,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-13 17:37:51,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:37:51,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-13 17:37:51,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-13 17:37:51,813 INFO L87 Difference]: Start difference. First operand 2066 states and 3212 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 17:38:05,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:38:05,691 INFO L93 Difference]: Finished difference Result 2158 states and 3332 transitions. [2021-11-13 17:38:05,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-13 17:38:05,692 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 17:38:05,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:38:05,699 INFO L225 Difference]: With dead ends: 2158 [2021-11-13 17:38:05,699 INFO L226 Difference]: Without dead ends: 2154 [2021-11-13 17:38:05,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2315 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-13 17:38:05,707 INFO L933 BasicCegarLoop]: 2905 mSDtfsCounter, 246 mSDsluCounter, 92806 mSDsCounter, 0 mSdLazyCounter, 4066 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6192.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 95711 SdHoareTripleChecker+Invalid, 4527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 102.60ms SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 4066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7011.94ms IncrementalHoareTripleChecker+Time [2021-11-13 17:38:05,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 95711 Invalid, 4527 Unknown, 0 Unchecked, 102.60ms Time], IncrementalHoareTripleChecker [461 Valid, 4066 Invalid, 0 Unknown, 0 Unchecked, 7011.94ms Time] [2021-11-13 17:38:05,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2021-11-13 17:38:05,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 2096. [2021-11-13 17:38:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 1236 states have (on average 1.8155339805825244) internal successors, (2244), 2083 states have internal predecessors, (2244), 507 states have call successors, (507), 6 states have call predecessors, (507), 6 states have return successors, (507), 7 states have call predecessors, (507), 506 states have call successors, (507) [2021-11-13 17:38:05,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 3258 transitions. [2021-11-13 17:38:05,875 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 3258 transitions. Word has length 107 [2021-11-13 17:38:05,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:38:05,876 INFO L470 AbstractCegarLoop]: Abstraction has 2096 states and 3258 transitions. [2021-11-13 17:38:05,876 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 17:38:05,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 3258 transitions. [2021-11-13 17:38:05,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-13 17:38:05,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:38:05,877 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 17:38:05,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-13 17:38:06,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:38:06,093 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 17:38:06,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:38:06,094 INFO L85 PathProgramCache]: Analyzing trace with hash 2058343814, now seen corresponding path program 5 times [2021-11-13 17:38:06,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:38:06,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522572250] [2021-11-13 17:38:06,094 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 17:38:06,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:38:06,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:38:06,095 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:38:06,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9225b4ba-f3dc-46ea-aa76-1781f124ce7c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 17:38:07,203 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-13 17:38:07,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:38:07,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-13 17:38:07,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:38:07,259 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 17:38:07,463 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-13 17:38:07,463 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 23 treesize of output 30 [2021-11-13 17:38:07,515 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 17:38:07,712 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