./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3b6a7e09bdf002daf4e1e371c35be311dd644a61b41d9b32022b9ee835751b90 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:48:15,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:48:15,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:48:15,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:48:15,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:48:15,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:48:15,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:48:15,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:48:15,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:48:15,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:48:15,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:48:15,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:48:15,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:48:15,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:48:15,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:48:15,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:48:15,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:48:15,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:48:15,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:48:15,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:48:15,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:48:15,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:48:15,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:48:15,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:48:15,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:48:15,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:48:15,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:48:15,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:48:15,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:48:15,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:48:15,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:48:15,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:48:15,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:48:15,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:48:15,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:48:15,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:48:15,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:48:15,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:48:15,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:48:15,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:48:15,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:48:15,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 09:48:15,799 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:48:15,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:48:15,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:48:15,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:48:15,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:48:15,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:48:15,811 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:48:15,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:48:15,812 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:48:15,812 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:48:15,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:48:15,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:48:15,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:48:15,815 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 09:48:15,815 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 09:48:15,816 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 09:48:15,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:48:15,816 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 09:48:15,816 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:48:15,817 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:48:15,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:48:15,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:48:15,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:48:15,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:48:15,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:48:15,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:48:15,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:48:15,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:48:15,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:48:15,821 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_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b6a7e09bdf002daf4e1e371c35be311dd644a61b41d9b32022b9ee835751b90 [2021-11-09 09:48:16,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:48:16,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:48:16,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:48:16,191 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:48:16,193 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:48:16,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i [2021-11-09 09:48:16,290 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/data/bb572105b/6dc2ccc9d8f74208b9ae53efcb86f5c1/FLAGb87cdd362 [2021-11-09 09:48:17,104 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:48:17,105 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i [2021-11-09 09:48:17,141 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/data/bb572105b/6dc2ccc9d8f74208b9ae53efcb86f5c1/FLAGb87cdd362 [2021-11-09 09:48:17,308 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/data/bb572105b/6dc2ccc9d8f74208b9ae53efcb86f5c1 [2021-11-09 09:48:17,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:48:17,313 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 09:48:17,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:48:17,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:48:17,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:48:17,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:48:17" (1/1) ... [2021-11-09 09:48:17,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c8cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:17, skipping insertion in model container [2021-11-09 09:48:17,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:48:17" (1/1) ... [2021-11-09 09:48:17,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:48:17,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:48:17,949 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_95844921-4c18-4425-8877-5b6e6eb457ec/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i[33021,33034] [2021-11-09 09:48:18,076 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_95844921-4c18-4425-8877-5b6e6eb457ec/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i[45234,45247] [2021-11-09 09:48:18,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:48:18,098 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-09 09:48:18,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1169d3ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:18, skipping insertion in model container [2021-11-09 09:48:18,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:48:18,099 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-09 09:48:18,106 INFO L168 Benchmark]: Toolchain (without parser) took 787.59 ms. Allocated memory is still 130.0 MB. Free memory was 94.4 MB in the beginning and 95.7 MB in the end (delta: -1.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 09:48:18,107 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 86.0 MB. Free memory was 58.9 MB in the beginning and 58.9 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:48:18,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.24 ms. Allocated memory is still 130.0 MB. Free memory was 94.1 MB in the beginning and 95.7 MB in the end (delta: -1.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:48:18,110 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 86.0 MB. Free memory was 58.9 MB in the beginning and 58.9 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 784.24 ms. Allocated memory is still 130.0 MB. Free memory was 94.1 MB in the beginning and 95.7 MB in the end (delta: -1.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3b6a7e09bdf002daf4e1e371c35be311dd644a61b41d9b32022b9ee835751b90 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:48:20,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:48:20,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:48:20,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:48:20,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:48:20,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:48:20,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:48:20,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:48:20,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:48:20,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:48:20,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:48:20,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:48:20,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:48:20,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:48:20,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:48:20,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:48:20,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:48:20,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:48:20,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:48:20,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:48:20,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:48:20,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:48:20,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:48:20,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:48:20,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:48:20,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:48:20,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:48:20,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:48:20,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:48:20,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:48:20,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:48:20,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:48:21,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:48:21,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:48:21,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:48:21,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:48:21,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:48:21,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:48:21,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:48:21,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:48:21,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:48:21,011 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 09:48:21,065 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:48:21,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:48:21,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:48:21,066 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:48:21,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:48:21,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:48:21,070 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:48:21,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:48:21,071 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:48:21,071 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:48:21,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:48:21,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:48:21,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:48:21,073 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 09:48:21,074 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 09:48:21,074 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 09:48:21,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:48:21,075 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 09:48:21,075 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 09:48:21,075 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 09:48:21,076 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:48:21,076 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:48:21,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:48:21,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:48:21,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:48:21,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:48:21,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:48:21,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:48:21,078 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 09:48:21,079 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 09:48:21,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:48:21,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 09:48:21,080 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_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b6a7e09bdf002daf4e1e371c35be311dd644a61b41d9b32022b9ee835751b90 [2021-11-09 09:48:21,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:48:21,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:48:21,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:48:21,627 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:48:21,629 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:48:21,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i [2021-11-09 09:48:21,743 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/data/6e724244c/45d9357cb5d74ee882fa88e6fc078389/FLAG922fb68fc [2021-11-09 09:48:22,632 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:48:22,634 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i [2021-11-09 09:48:22,663 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/data/6e724244c/45d9357cb5d74ee882fa88e6fc078389/FLAG922fb68fc [2021-11-09 09:48:22,775 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/data/6e724244c/45d9357cb5d74ee882fa88e6fc078389 [2021-11-09 09:48:22,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:48:22,782 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 09:48:22,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:48:22,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:48:22,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:48:22,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:48:22" (1/1) ... [2021-11-09 09:48:22,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@773fcbba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:22, skipping insertion in model container [2021-11-09 09:48:22,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:48:22" (1/1) ... [2021-11-09 09:48:22,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:48:22,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:48:23,562 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_95844921-4c18-4425-8877-5b6e6eb457ec/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i[33021,33034] [2021-11-09 09:48:23,725 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_95844921-4c18-4425-8877-5b6e6eb457ec/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i[45234,45247] [2021-11-09 09:48:23,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:48:23,748 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-09 09:48:23,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:48:23,788 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_95844921-4c18-4425-8877-5b6e6eb457ec/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i[33021,33034] [2021-11-09 09:48:23,938 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_95844921-4c18-4425-8877-5b6e6eb457ec/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i[45234,45247] [2021-11-09 09:48:23,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:48:23,953 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:48:24,029 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_95844921-4c18-4425-8877-5b6e6eb457ec/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i[33021,33034] [2021-11-09 09:48:24,117 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_95844921-4c18-4425-8877-5b6e6eb457ec/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i[45234,45247] [2021-11-09 09:48:24,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:48:24,196 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:48:24,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:24 WrapperNode [2021-11-09 09:48:24,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:48:24,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:48:24,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:48:24,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:48:24,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:24" (1/1) ... [2021-11-09 09:48:24,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:24" (1/1) ... [2021-11-09 09:48:24,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:24" (1/1) ... [2021-11-09 09:48:24,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:24" (1/1) ... [2021-11-09 09:48:24,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:24" (1/1) ... [2021-11-09 09:48:24,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:24" (1/1) ... [2021-11-09 09:48:24,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:24" (1/1) ... [2021-11-09 09:48:24,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:48:24,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:48:24,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:48:24,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:48:24,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:24" (1/1) ... [2021-11-09 09:48:24,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:48:24,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:24,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:48:24,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:48:24,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 09:48:24,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:48:24,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 09:48:24,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 09:48:24,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 09:48:24,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 09:48:24,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 09:48:24,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 09:48:24,624 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-09 09:48:24,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-09 09:48:24,625 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-11-09 09:48:24,625 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 09:48:24,625 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-09 09:48:24,626 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-09 09:48:24,626 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-09 09:48:24,626 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-09 09:48:24,626 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-09 09:48:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 09:48:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-09 09:48:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-09 09:48:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-09 09:48:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-09 09:48:24,628 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-09 09:48:24,628 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-09 09:48:24,628 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-09 09:48:24,628 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-09 09:48:24,629 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-09 09:48:24,629 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-09 09:48:24,629 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-09 09:48:24,629 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-09 09:48:24,629 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-09 09:48:24,630 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-09 09:48:24,630 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-09 09:48:24,630 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-09 09:48:24,631 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-09 09:48:24,631 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-09 09:48:24,632 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-09 09:48:24,632 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-09 09:48:24,633 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-09 09:48:24,633 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-09 09:48:24,633 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-09 09:48:24,633 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-09 09:48:24,633 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-09 09:48:24,634 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-09 09:48:24,634 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-09 09:48:24,634 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-09 09:48:24,634 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-09 09:48:24,634 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-09 09:48:24,635 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-09 09:48:24,635 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-09 09:48:24,636 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-09 09:48:24,636 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-09 09:48:24,636 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-09 09:48:24,636 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-09 09:48:24,637 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-09 09:48:24,637 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-09 09:48:24,639 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-09 09:48:24,639 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-09 09:48:24,640 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-09 09:48:24,641 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-09 09:48:24,641 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-09 09:48:24,641 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-09 09:48:24,641 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-09 09:48:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-09 09:48:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 09:48:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 09:48:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 09:48:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 09:48:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 09:48:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 09:48:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 09:48:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 09:48:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 09:48:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 09:48:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 09:48:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 09:48:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 09:48:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 09:48:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 09:48:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 09:48:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 09:48:24,647 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 09:48:24,647 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 09:48:24,647 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 09:48:24,647 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 09:48:24,647 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 09:48:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 09:48:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 09:48:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 09:48:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 09:48:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 09:48:24,649 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 09:48:24,649 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 09:48:24,649 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 09:48:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 09:48:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 09:48:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 09:48:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 09:48:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 09:48:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 09:48:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 09:48:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 09:48:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 09:48:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 09:48:24,652 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 09:48:24,652 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 09:48:24,652 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 09:48:24,652 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 09:48:24,652 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 09:48:24,653 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 09:48:24,653 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 09:48:24,653 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 09:48:24,653 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 09:48:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 09:48:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 09:48:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 09:48:24,655 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 09:48:24,656 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 09:48:24,659 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 09:48:24,660 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 09:48:24,660 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 09:48:24,661 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 09:48:24,661 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 09:48:24,662 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 09:48:24,662 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 09:48:24,662 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 09:48:24,662 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 09:48:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 09:48:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 09:48:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 09:48:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 09:48:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 09:48:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 09:48:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 09:48:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 09:48:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 09:48:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 09:48:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 09:48:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 09:48:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 09:48:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 09:48:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 09:48:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 09:48:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 09:48:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 09:48:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 09:48:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 09:48:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 09:48:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 09:48:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 09:48:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 09:48:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 09:48:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 09:48:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 09:48:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 09:48:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 09:48:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 09:48:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 09:48:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 09:48:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 09:48:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 09:48:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 09:48:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 09:48:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 09:48:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 09:48:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 09:48:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 09:48:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 09:48:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 09:48:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 09:48:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 09:48:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-09 09:48:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-09 09:48:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-09 09:48:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-09 09:48:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:48:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-09 09:48:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-11-09 09:48:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 09:48:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:48:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 09:48:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 09:48:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-09 09:48:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:48:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:48:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-09 09:48:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:48:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 09:48:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 09:48:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:48:24,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 09:48:24,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-09 09:48:25,298 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 09:48:30,773 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:48:30,774 INFO L299 CfgBuilder]: Removed 62 assume(true) statements. [2021-11-09 09:48:30,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:48:30 BoogieIcfgContainer [2021-11-09 09:48:30,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:48:30,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:48:30,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:48:30,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:48:30,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:48:22" (1/3) ... [2021-11-09 09:48:30,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a090887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:48:30, skipping insertion in model container [2021-11-09 09:48:30,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:24" (2/3) ... [2021-11-09 09:48:30,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a090887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:48:30, skipping insertion in model container [2021-11-09 09:48:30,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:48:30" (3/3) ... [2021-11-09 09:48:30,791 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test8-1.i [2021-11-09 09:48:30,800 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:48:30,800 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-09 09:48:30,863 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:48:30,877 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:48:30,881 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-09 09:48:30,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 1102 states, 541 states have (on average 2.2384473197781887) internal successors, (1211), 1089 states have internal predecessors, (1211), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-09 09:48:30,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 09:48:30,970 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:30,971 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:30,971 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:48:30,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:30,978 INFO L85 PathProgramCache]: Analyzing trace with hash -292335135, now seen corresponding path program 1 times [2021-11-09 09:48:30,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:48:30,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154992907] [2021-11-09 09:48:30,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:30,995 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:48:30,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:48:30,998 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:48:31,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 09:48:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:48:31,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:48:31,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:31,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:48:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:31,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:48:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:31,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:48:31,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154992907] [2021-11-09 09:48:31,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154992907] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:48:31,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:48:31,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 09:48:31,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392068581] [2021-11-09 09:48:31,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:48:31,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:48:31,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:48:31,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:48:31,503 INFO L87 Difference]: Start difference. First operand has 1102 states, 541 states have (on average 2.2384473197781887) internal successors, (1211), 1089 states have internal predecessors, (1211), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:48:33,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:33,931 INFO L93 Difference]: Finished difference Result 1105 states and 1191 transitions. [2021-11-09 09:48:33,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:48:33,937 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 [2021-11-09 09:48:33,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:33,962 INFO L225 Difference]: With dead ends: 1105 [2021-11-09 09:48:33,962 INFO L226 Difference]: Without dead ends: 1102 [2021-11-09 09:48:33,964 INFO L786 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 [2021-11-09 09:48:33,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-11-09 09:48:34,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1090. [2021-11-09 09:48:34,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 544 states have (on average 2.088235294117647) internal successors, (1136), 1077 states have internal predecessors, (1136), 23 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-09 09:48:34,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1181 transitions. [2021-11-09 09:48:34,080 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1181 transitions. Word has length 7 [2021-11-09 09:48:34,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:34,081 INFO L470 AbstractCegarLoop]: Abstraction has 1090 states and 1181 transitions. [2021-11-09 09:48:34,081 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) [2021-11-09 09:48:34,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1181 transitions. [2021-11-09 09:48:34,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 09:48:34,082 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:34,082 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:34,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:34,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:48:34,295 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:48:34,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:34,301 INFO L85 PathProgramCache]: Analyzing trace with hash -292335134, now seen corresponding path program 1 times [2021-11-09 09:48:34,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:48:34,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704813664] [2021-11-09 09:48:34,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:34,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:48:34,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:48:34,304 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:48:34,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 09:48:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:48:34,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:48:34,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:34,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:48:34,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:34,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:48:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:34,676 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:48:34,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704813664] [2021-11-09 09:48:34,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704813664] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:48:34,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:48:34,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 09:48:34,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615508882] [2021-11-09 09:48:34,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:48:34,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:48:34,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:48:34,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:48:34,679 INFO L87 Difference]: Start difference. First operand 1090 states and 1181 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:48:40,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:40,062 INFO L93 Difference]: Finished difference Result 1566 states and 1691 transitions. [2021-11-09 09:48:40,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:48:40,063 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 [2021-11-09 09:48:40,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:40,072 INFO L225 Difference]: With dead ends: 1566 [2021-11-09 09:48:40,072 INFO L226 Difference]: Without dead ends: 1566 [2021-11-09 09:48:40,073 INFO L786 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 [2021-11-09 09:48:40,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-11-09 09:48:40,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1129. [2021-11-09 09:48:40,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 591 states have (on average 2.0676818950930627) internal successors, (1222), 1115 states have internal predecessors, (1222), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-09 09:48:40,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1269 transitions. [2021-11-09 09:48:40,124 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1269 transitions. Word has length 7 [2021-11-09 09:48:40,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:40,124 INFO L470 AbstractCegarLoop]: Abstraction has 1129 states and 1269 transitions. [2021-11-09 09:48:40,125 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) [2021-11-09 09:48:40,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1269 transitions. [2021-11-09 09:48:40,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 09:48:40,126 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:40,126 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:40,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:40,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:48:40,340 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:48:40,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:40,341 INFO L85 PathProgramCache]: Analyzing trace with hash -184131353, now seen corresponding path program 1 times [2021-11-09 09:48:40,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:48:40,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881665976] [2021-11-09 09:48:40,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:40,342 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:48:40,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:48:40,343 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:48:40,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 09:48:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:48:40,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:48:40,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:40,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:48:40,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:40,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:48:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:40,771 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:48:40,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881665976] [2021-11-09 09:48:40,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881665976] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:48:40,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:48:40,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 09:48:40,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481207331] [2021-11-09 09:48:40,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:48:40,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:48:40,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:48:40,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:48:40,774 INFO L87 Difference]: Start difference. First operand 1129 states and 1269 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:48:46,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:46,569 INFO L93 Difference]: Finished difference Result 1565 states and 1690 transitions. [2021-11-09 09:48:46,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:48:46,571 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 [2021-11-09 09:48:46,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:46,580 INFO L225 Difference]: With dead ends: 1565 [2021-11-09 09:48:46,580 INFO L226 Difference]: Without dead ends: 1565 [2021-11-09 09:48:46,581 INFO L786 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 [2021-11-09 09:48:46,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2021-11-09 09:48:46,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1327. [2021-11-09 09:48:46,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 798 states have (on average 2.0426065162907268) internal successors, (1630), 1312 states have internal predecessors, (1630), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 09:48:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1679 transitions. [2021-11-09 09:48:46,627 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1679 transitions. Word has length 12 [2021-11-09 09:48:46,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:46,628 INFO L470 AbstractCegarLoop]: Abstraction has 1327 states and 1679 transitions. [2021-11-09 09:48:46,628 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) [2021-11-09 09:48:46,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1679 transitions. [2021-11-09 09:48:46,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 09:48:46,629 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:46,629 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:46,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:46,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:48:46,841 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:48:46,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:46,842 INFO L85 PathProgramCache]: Analyzing trace with hash -184131354, now seen corresponding path program 1 times [2021-11-09 09:48:46,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:48:46,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983875390] [2021-11-09 09:48:46,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:46,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:48:46,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:48:46,848 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:48:46,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 09:48:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:48:47,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:48:47,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:47,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:48:47,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:47,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:48:47,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:47,126 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:48:47,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983875390] [2021-11-09 09:48:47,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983875390] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:48:47,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:48:47,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 09:48:47,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944531802] [2021-11-09 09:48:47,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:48:47,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:48:47,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:48:47,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:48:47,128 INFO L87 Difference]: Start difference. First operand 1327 states and 1679 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:48:49,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:49,719 INFO L93 Difference]: Finished difference Result 1656 states and 2033 transitions. [2021-11-09 09:48:49,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:48:49,720 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 [2021-11-09 09:48:49,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:49,731 INFO L225 Difference]: With dead ends: 1656 [2021-11-09 09:48:49,731 INFO L226 Difference]: Without dead ends: 1656 [2021-11-09 09:48:49,732 INFO L786 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 [2021-11-09 09:48:49,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2021-11-09 09:48:49,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1280. [2021-11-09 09:48:49,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 798 states have (on average 1.9774436090225564) internal successors, (1578), 1265 states have internal predecessors, (1578), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 09:48:49,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1627 transitions. [2021-11-09 09:48:49,775 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1627 transitions. Word has length 12 [2021-11-09 09:48:49,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:49,775 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1627 transitions. [2021-11-09 09:48:49,775 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) [2021-11-09 09:48:49,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1627 transitions. [2021-11-09 09:48:49,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 09:48:49,776 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:49,777 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:49,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:49,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:48:49,989 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr534ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:48:49,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:49,990 INFO L85 PathProgramCache]: Analyzing trace with hash -42398436, now seen corresponding path program 1 times [2021-11-09 09:48:49,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:48:49,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656974756] [2021-11-09 09:48:49,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:49,991 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:48:49,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:48:49,993 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:48:50,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 09:48:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:48:50,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:48:50,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:50,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:48:50,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:48:50,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:48:50,418 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-09 09:48:50,418 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 [2021-11-09 09:48:50,496 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-09 09:48:50,497 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 [2021-11-09 09:48:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:50,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:48:50,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:50,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:48:50,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656974756] [2021-11-09 09:48:50,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656974756] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:48:50,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:48:50,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 09:48:50,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473574370] [2021-11-09 09:48:50,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:48:50,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:48:50,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:48:50,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:48:50,619 INFO L87 Difference]: Start difference. First operand 1280 states and 1627 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:48:52,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:52,870 INFO L93 Difference]: Finished difference Result 1790 states and 2346 transitions. [2021-11-09 09:48:52,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:48:52,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-09 09:48:52,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:52,883 INFO L225 Difference]: With dead ends: 1790 [2021-11-09 09:48:52,884 INFO L226 Difference]: Without dead ends: 1790 [2021-11-09 09:48:52,884 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:48:52,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2021-11-09 09:48:52,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1280. [2021-11-09 09:48:52,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 798 states have (on average 1.9761904761904763) internal successors, (1577), 1265 states have internal predecessors, (1577), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 09:48:52,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1626 transitions. [2021-11-09 09:48:52,932 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1626 transitions. Word has length 14 [2021-11-09 09:48:52,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:52,932 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1626 transitions. [2021-11-09 09:48:52,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:48:52,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1626 transitions. [2021-11-09 09:48:52,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-09 09:48:52,934 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:52,934 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:52,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-09 09:48:53,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:48:53,148 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:48:53,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:53,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1725470958, now seen corresponding path program 1 times [2021-11-09 09:48:53,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:48:53,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978682284] [2021-11-09 09:48:53,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:53,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:48:53,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:48:53,151 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:48:53,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 09:48:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:48:53,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:48:53,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:53,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:53,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:48:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:53,527 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:48:53,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978682284] [2021-11-09 09:48:53,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978682284] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:48:53,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:48:53,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 09:48:53,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107708537] [2021-11-09 09:48:53,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:48:53,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:48:53,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:48:53,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:48:53,529 INFO L87 Difference]: Start difference. First operand 1280 states and 1626 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:48:53,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:53,576 INFO L93 Difference]: Finished difference Result 1247 states and 1592 transitions. [2021-11-09 09:48:53,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:48:53,577 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 [2021-11-09 09:48:53,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:53,586 INFO L225 Difference]: With dead ends: 1247 [2021-11-09 09:48:53,586 INFO L226 Difference]: Without dead ends: 1247 [2021-11-09 09:48:53,586 INFO L786 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 [2021-11-09 09:48:53,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2021-11-09 09:48:53,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1238. [2021-11-09 09:48:53,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 780 states have (on average 1.9666666666666666) internal successors, (1534), 1223 states have internal predecessors, (1534), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 09:48:53,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1583 transitions. [2021-11-09 09:48:53,626 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1583 transitions. Word has length 22 [2021-11-09 09:48:53,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:53,627 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1583 transitions. [2021-11-09 09:48:53,627 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) [2021-11-09 09:48:53,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1583 transitions. [2021-11-09 09:48:53,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 09:48:53,628 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:53,628 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:53,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:53,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:48:53,842 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:48:53,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:53,842 INFO L85 PathProgramCache]: Analyzing trace with hash -320213556, now seen corresponding path program 1 times [2021-11-09 09:48:53,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:48:53,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772297206] [2021-11-09 09:48:53,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:53,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:48:53,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:48:53,845 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:48:53,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 09:48:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:48:54,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:48:54,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:54,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:54,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:48:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:54,325 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:48:54,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772297206] [2021-11-09 09:48:54,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772297206] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:48:54,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:48:54,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-09 09:48:54,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137853736] [2021-11-09 09:48:54,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:48:54,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:48:54,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:48:54,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:48:54,332 INFO L87 Difference]: Start difference. First operand 1238 states and 1583 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:48:54,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:54,445 INFO L93 Difference]: Finished difference Result 1226 states and 1564 transitions. [2021-11-09 09:48:54,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:48:54,446 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 [2021-11-09 09:48:54,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:54,454 INFO L225 Difference]: With dead ends: 1226 [2021-11-09 09:48:54,454 INFO L226 Difference]: Without dead ends: 1226 [2021-11-09 09:48:54,456 INFO L786 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 [2021-11-09 09:48:54,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-11-09 09:48:54,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1216. [2021-11-09 09:48:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 772 states have (on average 1.9494818652849741) internal successors, (1505), 1201 states have internal predecessors, (1505), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 09:48:54,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1554 transitions. [2021-11-09 09:48:54,493 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1554 transitions. Word has length 24 [2021-11-09 09:48:54,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:54,494 INFO L470 AbstractCegarLoop]: Abstraction has 1216 states and 1554 transitions. [2021-11-09 09:48:54,494 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) [2021-11-09 09:48:54,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1554 transitions. [2021-11-09 09:48:54,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 09:48:54,496 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:54,496 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:54,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:54,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:48:54,710 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:48:54,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:54,710 INFO L85 PathProgramCache]: Analyzing trace with hash 44817114, now seen corresponding path program 1 times [2021-11-09 09:48:54,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:48:54,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372950976] [2021-11-09 09:48:54,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:54,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:48:54,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:48:54,712 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:48:54,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 09:48:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:48:55,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:48:55,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:55,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:48:55,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:55,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:48:55,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:55,368 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:48:55,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372950976] [2021-11-09 09:48:55,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372950976] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:48:55,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:48:55,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 09:48:55,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21970685] [2021-11-09 09:48:55,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:48:55,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:48:55,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:48:55,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:48:55,371 INFO L87 Difference]: Start difference. First operand 1216 states and 1554 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:48:57,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:57,615 INFO L93 Difference]: Finished difference Result 1806 states and 2377 transitions. [2021-11-09 09:48:57,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:48:57,616 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 [2021-11-09 09:48:57,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:57,628 INFO L225 Difference]: With dead ends: 1806 [2021-11-09 09:48:57,629 INFO L226 Difference]: Without dead ends: 1806 [2021-11-09 09:48:57,629 INFO L786 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 [2021-11-09 09:48:57,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2021-11-09 09:48:57,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1212. [2021-11-09 09:48:57,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 772 states have (on average 1.944300518134715) internal successors, (1501), 1197 states have internal predecessors, (1501), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 09:48:57,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1550 transitions. [2021-11-09 09:48:57,673 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1550 transitions. Word has length 38 [2021-11-09 09:48:57,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:57,673 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 1550 transitions. [2021-11-09 09:48:57,674 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) [2021-11-09 09:48:57,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1550 transitions. [2021-11-09 09:48:57,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 09:48:57,675 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:57,676 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:57,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-09 09:48:57,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:48:57,890 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:48:57,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:57,891 INFO L85 PathProgramCache]: Analyzing trace with hash 44817115, now seen corresponding path program 1 times [2021-11-09 09:48:57,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:48:57,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872852314] [2021-11-09 09:48:57,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:57,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:48:57,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:48:57,894 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:48:57,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 09:48:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:48:58,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:48:58,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:58,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:48:58,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:58,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:48:59,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:59,142 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:48:59,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872852314] [2021-11-09 09:48:59,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872852314] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:48:59,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:48:59,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 09:48:59,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643471111] [2021-11-09 09:48:59,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:48:59,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:48:59,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:48:59,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:48:59,144 INFO L87 Difference]: Start difference. First operand 1212 states and 1550 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:49:06,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:49:06,548 INFO L93 Difference]: Finished difference Result 1453 states and 1568 transitions. [2021-11-09 09:49:06,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:49:06,550 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 [2021-11-09 09:49:06,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:49:06,557 INFO L225 Difference]: With dead ends: 1453 [2021-11-09 09:49:06,557 INFO L226 Difference]: Without dead ends: 1453 [2021-11-09 09:49:06,557 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:49:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-11-09 09:49:06,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1208. [2021-11-09 09:49:06,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 772 states have (on average 1.939119170984456) internal successors, (1497), 1193 states have internal predecessors, (1497), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 09:49:06,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1546 transitions. [2021-11-09 09:49:06,594 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1546 transitions. Word has length 38 [2021-11-09 09:49:06,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:49:06,594 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1546 transitions. [2021-11-09 09:49:06,595 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) [2021-11-09 09:49:06,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1546 transitions. [2021-11-09 09:49:06,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-09 09:49:06,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:49:06,604 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:49:06,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:06,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:49:06,819 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:49:06,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:06,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1384262345, now seen corresponding path program 1 times [2021-11-09 09:49:06,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:49:06,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188685772] [2021-11-09 09:49:06,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:06,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:49:06,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:49:06,822 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:49:06,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-09 09:49:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:07,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:49:07,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:49:07,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:07,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:49:07,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:07,527 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:49:07,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188685772] [2021-11-09 09:49:07,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188685772] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:49:07,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:49:07,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 09:49:07,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357848079] [2021-11-09 09:49:07,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:49:07,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:49:07,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:49:07,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:49:07,529 INFO L87 Difference]: Start difference. First operand 1208 states and 1546 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:49:07,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:49:07,594 INFO L93 Difference]: Finished difference Result 1211 states and 1545 transitions. [2021-11-09 09:49:07,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:49:07,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-11-09 09:49:07,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:49:07,602 INFO L225 Difference]: With dead ends: 1211 [2021-11-09 09:49:07,602 INFO L226 Difference]: Without dead ends: 1211 [2021-11-09 09:49:07,603 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:49:07,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-11-09 09:49:07,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1202. [2021-11-09 09:49:07,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 766 states have (on average 1.941253263707572) internal successors, (1487), 1187 states have internal predecessors, (1487), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 09:49:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1536 transitions. [2021-11-09 09:49:07,634 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1536 transitions. Word has length 53 [2021-11-09 09:49:07,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:49:07,634 INFO L470 AbstractCegarLoop]: Abstraction has 1202 states and 1536 transitions. [2021-11-09 09:49:07,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:49:07,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1536 transitions. [2021-11-09 09:49:07,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 09:49:07,636 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:49:07,636 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:49:07,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:07,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:49:07,852 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:49:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:07,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1870144277, now seen corresponding path program 1 times [2021-11-09 09:49:07,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:49:07,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251040377] [2021-11-09 09:49:07,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:07,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:49:07,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:49:07,854 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:49:07,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-09 09:49:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:08,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:49:08,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:49:08,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:08,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:49:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:09,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:49:09,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251040377] [2021-11-09 09:49:09,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251040377] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:49:09,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:49:09,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 09:49:09,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686754464] [2021-11-09 09:49:09,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:49:09,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:49:09,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:49:09,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:49:09,250 INFO L87 Difference]: Start difference. First operand 1202 states and 1536 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:49:09,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:49:09,582 INFO L93 Difference]: Finished difference Result 1742 states and 2271 transitions. [2021-11-09 09:49:09,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:49:09,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-11-09 09:49:09,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:49:09,596 INFO L225 Difference]: With dead ends: 1742 [2021-11-09 09:49:09,596 INFO L226 Difference]: Without dead ends: 1742 [2021-11-09 09:49:09,596 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:49:09,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2021-11-09 09:49:09,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1563. [2021-11-09 09:49:09,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1125 states have (on average 1.9244444444444444) internal successors, (2165), 1546 states have internal predecessors, (2165), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-09 09:49:09,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2218 transitions. [2021-11-09 09:49:09,653 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2218 transitions. Word has length 61 [2021-11-09 09:49:09,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:49:09,654 INFO L470 AbstractCegarLoop]: Abstraction has 1563 states and 2218 transitions. [2021-11-09 09:49:09,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:49:09,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2218 transitions. [2021-11-09 09:49:09,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 09:49:09,658 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:49:09,659 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:49:09,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:09,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:49:09,874 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:49:09,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:09,874 INFO L85 PathProgramCache]: Analyzing trace with hash 740278757, now seen corresponding path program 1 times [2021-11-09 09:49:09,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:49:09,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442768670] [2021-11-09 09:49:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:09,876 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:49:09,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:49:09,877 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:49:09,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-09 09:49:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:10,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:49:10,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:49:10,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:49:10,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:49:11,373 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 09:49:11,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-09 09:49:11,381 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-09 09:49:11,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-09 09:49:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:11,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:49:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:16,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:49:16,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442768670] [2021-11-09 09:49:16,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442768670] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:49:16,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:49:16,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 09:49:16,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875701424] [2021-11-09 09:49:16,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:49:16,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:49:16,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:49:16,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-09 09:49:16,767 INFO L87 Difference]: Start difference. First operand 1563 states and 2218 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:49:32,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:49:32,427 INFO L93 Difference]: Finished difference Result 2272 states and 3358 transitions. [2021-11-09 09:49:32,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:49:32,431 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 [2021-11-09 09:49:32,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:49:32,448 INFO L225 Difference]: With dead ends: 2272 [2021-11-09 09:49:32,448 INFO L226 Difference]: Without dead ends: 2272 [2021-11-09 09:49:32,449 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-09 09:49:32,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2021-11-09 09:49:32,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 1159. [2021-11-09 09:49:32,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 763 states have (on average 1.817824377457405) internal successors, (1387), 1144 states have internal predecessors, (1387), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 09:49:32,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1436 transitions. [2021-11-09 09:49:32,487 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1436 transitions. Word has length 64 [2021-11-09 09:49:32,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:49:32,487 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 1436 transitions. [2021-11-09 09:49:32,488 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) [2021-11-09 09:49:32,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1436 transitions. [2021-11-09 09:49:32,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 09:49:32,489 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:49:32,489 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:49:32,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:32,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:49:32,708 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:49:32,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:32,708 INFO L85 PathProgramCache]: Analyzing trace with hash -2099807298, now seen corresponding path program 1 times [2021-11-09 09:49:32,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:49:32,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64252164] [2021-11-09 09:49:32,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:32,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:49:32,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:49:32,711 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:49:32,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-09 09:49:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:33,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:49:33,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:49:33,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:49:33,570 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 [2021-11-09 09:49:33,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-09 09:49:33,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:33,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:49:33,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:33,805 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:49:33,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64252164] [2021-11-09 09:49:33,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64252164] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:49:33,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:49:33,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 09:49:33,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231583094] [2021-11-09 09:49:33,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:49:33,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:49:33,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:49:33,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:49:33,810 INFO L87 Difference]: Start difference. First operand 1159 states and 1436 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) [2021-11-09 09:49:37,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:49:37,354 INFO L93 Difference]: Finished difference Result 1158 states and 1435 transitions. [2021-11-09 09:49:37,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:49:37,354 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 [2021-11-09 09:49:37,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:49:37,360 INFO L225 Difference]: With dead ends: 1158 [2021-11-09 09:49:37,360 INFO L226 Difference]: Without dead ends: 1158 [2021-11-09 09:49:37,360 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:49:37,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2021-11-09 09:49:37,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1158. [2021-11-09 09:49:37,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 763 states have (on average 1.81651376146789) internal successors, (1386), 1143 states have internal predecessors, (1386), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 09:49:37,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1435 transitions. [2021-11-09 09:49:37,385 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1435 transitions. Word has length 69 [2021-11-09 09:49:37,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:49:37,386 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1435 transitions. [2021-11-09 09:49:37,386 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) [2021-11-09 09:49:37,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1435 transitions. [2021-11-09 09:49:37,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 09:49:37,387 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:49:37,388 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:49:37,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:37,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:49:37,601 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:49:37,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:37,602 INFO L85 PathProgramCache]: Analyzing trace with hash -2099807297, now seen corresponding path program 1 times [2021-11-09 09:49:37,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:49:37,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776952113] [2021-11-09 09:49:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:37,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:49:37,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:49:37,604 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:49:37,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-09 09:49:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:38,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:49:38,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:49:38,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:49:38,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-09 09:49:38,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-09 09:49:38,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-09 09:49:38,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-09 09:49:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:38,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:49:39,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:39,183 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:49:39,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776952113] [2021-11-09 09:49:39,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776952113] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:49:39,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:49:39,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-09 09:49:39,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327970731] [2021-11-09 09:49:39,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:49:39,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:49:39,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:49:39,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:49:39,185 INFO L87 Difference]: Start difference. First operand 1158 states and 1435 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) [2021-11-09 09:49:49,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:49:49,307 INFO L93 Difference]: Finished difference Result 1157 states and 1434 transitions. [2021-11-09 09:49:49,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:49:49,310 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 [2021-11-09 09:49:49,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:49:49,316 INFO L225 Difference]: With dead ends: 1157 [2021-11-09 09:49:49,316 INFO L226 Difference]: Without dead ends: 1157 [2021-11-09 09:49:49,316 INFO L786 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 [2021-11-09 09:49:49,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2021-11-09 09:49:49,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2021-11-09 09:49:49,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 762 states have (on average 1.8175853018372703) internal successors, (1385), 1142 states have internal predecessors, (1385), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 09:49:49,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1434 transitions. [2021-11-09 09:49:49,342 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1434 transitions. Word has length 69 [2021-11-09 09:49:49,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:49:49,343 INFO L470 AbstractCegarLoop]: Abstraction has 1157 states and 1434 transitions. [2021-11-09 09:49:49,343 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) [2021-11-09 09:49:49,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1434 transitions. [2021-11-09 09:49:49,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 09:49:49,344 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:49:49,345 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:49:49,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:49,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:49:49,557 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:49:49,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:49,558 INFO L85 PathProgramCache]: Analyzing trace with hash 178416389, now seen corresponding path program 1 times [2021-11-09 09:49:49,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:49:49,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176158091] [2021-11-09 09:49:49,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:49,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:49:49,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:49:49,560 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:49:49,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-09 09:49:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:50,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:49:50,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:49:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:50,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:49:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:50,587 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:49:50,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176158091] [2021-11-09 09:49:50,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176158091] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:49:50,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:49:50,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 09:49:50,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351823153] [2021-11-09 09:49:50,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:49:50,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:49:50,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:49:50,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:49:50,590 INFO L87 Difference]: Start difference. First operand 1157 states and 1434 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) [2021-11-09 09:49:50,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:49:50,731 INFO L93 Difference]: Finished difference Result 1167 states and 1447 transitions. [2021-11-09 09:49:50,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:49:50,732 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 [2021-11-09 09:49:50,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:49:50,742 INFO L225 Difference]: With dead ends: 1167 [2021-11-09 09:49:50,742 INFO L226 Difference]: Without dead ends: 1167 [2021-11-09 09:49:50,743 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:49:50,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2021-11-09 09:49:50,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1167. [2021-11-09 09:49:50,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 770 states have (on average 1.8142857142857143) internal successors, (1397), 1151 states have internal predecessors, (1397), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-09 09:49:50,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1447 transitions. [2021-11-09 09:49:50,780 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1447 transitions. Word has length 77 [2021-11-09 09:49:50,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:49:50,781 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 1447 transitions. [2021-11-09 09:49:50,781 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) [2021-11-09 09:49:50,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1447 transitions. [2021-11-09 09:49:50,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-09 09:49:50,783 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:49:50,783 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:49:50,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:50,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:49:50,998 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:49:50,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:50,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1398946491, now seen corresponding path program 1 times [2021-11-09 09:49:50,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:49:50,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120793368] [2021-11-09 09:49:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:51,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:49:51,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:49:51,001 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:49:51,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-09 09:49:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:51,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:49:51,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:49:52,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:52,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:49:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:52,355 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:49:52,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120793368] [2021-11-09 09:49:52,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120793368] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:49:52,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:49:52,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-09 09:49:52,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502337558] [2021-11-09 09:49:52,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:49:52,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:49:52,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:49:52,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:49:52,357 INFO L87 Difference]: Start difference. First operand 1167 states and 1447 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) [2021-11-09 09:49:52,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:49:52,798 INFO L93 Difference]: Finished difference Result 1181 states and 1465 transitions. [2021-11-09 09:49:52,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:49:52,799 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 [2021-11-09 09:49:52,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:49:52,806 INFO L225 Difference]: With dead ends: 1181 [2021-11-09 09:49:52,806 INFO L226 Difference]: Without dead ends: 1177 [2021-11-09 09:49:52,807 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:49:52,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2021-11-09 09:49:52,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1173. [2021-11-09 09:49:52,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 776 states have (on average 1.8105670103092784) internal successors, (1405), 1157 states have internal predecessors, (1405), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-09 09:49:52,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1455 transitions. [2021-11-09 09:49:52,837 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1455 transitions. Word has length 79 [2021-11-09 09:49:52,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:49:52,838 INFO L470 AbstractCegarLoop]: Abstraction has 1173 states and 1455 transitions. [2021-11-09 09:49:52,838 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) [2021-11-09 09:49:52,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1455 transitions. [2021-11-09 09:49:52,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-09 09:49:52,839 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:49:52,840 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:49:52,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:53,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:49:53,069 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:49:53,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:53,070 INFO L85 PathProgramCache]: Analyzing trace with hash -512767547, now seen corresponding path program 2 times [2021-11-09 09:49:53,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:49:53,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499081361] [2021-11-09 09:49:53,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:49:53,071 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:49:53,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:49:53,072 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:49:53,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-09 09:49:54,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:49:54,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:49:54,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 09:49:54,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:49:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:54,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:49:55,203 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:55,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:49:55,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499081361] [2021-11-09 09:49:55,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499081361] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:49:55,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:49:55,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-09 09:49:55,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962276421] [2021-11-09 09:49:55,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:49:55,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:49:55,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:49:55,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:49:55,207 INFO L87 Difference]: Start difference. First operand 1173 states and 1455 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) [2021-11-09 09:49:56,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:49:56,925 INFO L93 Difference]: Finished difference Result 1201 states and 1493 transitions. [2021-11-09 09:49:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 09:49:56,926 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 [2021-11-09 09:49:56,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:49:56,935 INFO L225 Difference]: With dead ends: 1201 [2021-11-09 09:49:56,935 INFO L226 Difference]: Without dead ends: 1197 [2021-11-09 09:49:56,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 09:49:56,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-09 09:49:56,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1185. [2021-11-09 09:49:56,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 788 states have (on average 1.8032994923857868) internal successors, (1421), 1169 states have internal predecessors, (1421), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-09 09:49:56,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1471 transitions. [2021-11-09 09:49:56,967 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1471 transitions. Word has length 83 [2021-11-09 09:49:56,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:49:56,968 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 1471 transitions. [2021-11-09 09:49:56,968 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) [2021-11-09 09:49:56,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1471 transitions. [2021-11-09 09:49:56,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 09:49:56,970 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:49:56,970 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:49:57,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:57,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:49:57,184 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:49:57,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:57,185 INFO L85 PathProgramCache]: Analyzing trace with hash 326177477, now seen corresponding path program 3 times [2021-11-09 09:49:57,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:49:57,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944779580] [2021-11-09 09:49:57,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:49:57,186 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:49:57,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:49:57,187 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:49:57,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-09 09:49:58,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-09 09:49:59,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:49:59,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 09:49:59,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:49:59,613 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:59,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:50:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:01,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:50:01,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944779580] [2021-11-09 09:50:01,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944779580] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:50:01,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:50:01,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-09 09:50:01,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854210363] [2021-11-09 09:50:01,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-09 09:50:01,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:50:01,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-09 09:50:01,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 09:50:01,754 INFO L87 Difference]: Start difference. First operand 1185 states and 1471 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) [2021-11-09 09:50:11,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:11,658 INFO L93 Difference]: Finished difference Result 1241 states and 1555 transitions. [2021-11-09 09:50:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-09 09:50:11,659 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 [2021-11-09 09:50:11,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:11,666 INFO L225 Difference]: With dead ends: 1241 [2021-11-09 09:50:11,667 INFO L226 Difference]: Without dead ends: 1235 [2021-11-09 09:50:11,669 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-09 09:50:11,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2021-11-09 09:50:11,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1209. [2021-11-09 09:50:11,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 812 states have (on average 1.7881773399014778) internal successors, (1452), 1193 states have internal predecessors, (1452), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-09 09:50:11,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1502 transitions. [2021-11-09 09:50:11,703 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1502 transitions. Word has length 91 [2021-11-09 09:50:11,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:11,703 INFO L470 AbstractCegarLoop]: Abstraction has 1209 states and 1502 transitions. [2021-11-09 09:50:11,704 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) [2021-11-09 09:50:11,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1502 transitions. [2021-11-09 09:50:11,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-09 09:50:11,705 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:11,705 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:11,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-09 09:50:11,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:50:11,925 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:50:11,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:11,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1201101627, now seen corresponding path program 4 times [2021-11-09 09:50:11,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:50:11,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710215174] [2021-11-09 09:50:11,926 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:50:11,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:50:11,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:50:11,927 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:50:11,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-09 09:50:12,746 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:50:12,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:50:12,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-09 09:50:12,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:50:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:14,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:50:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:19,216 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:50:19,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710215174] [2021-11-09 09:50:19,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710215174] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:50:19,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:50:19,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-09 09:50:19,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237085341] [2021-11-09 09:50:19,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-09 09:50:19,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:50:19,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-09 09:50:19,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-09 09:50:19,221 INFO L87 Difference]: Start difference. First operand 1209 states and 1502 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) [2021-11-09 09:50:36,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:36,422 INFO L93 Difference]: Finished difference Result 1301 states and 1622 transitions. [2021-11-09 09:50:36,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-09 09:50:36,423 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 [2021-11-09 09:50:36,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:36,430 INFO L225 Difference]: With dead ends: 1301 [2021-11-09 09:50:36,430 INFO L226 Difference]: Without dead ends: 1297 [2021-11-09 09:50:36,438 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-09 09:50:36,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-11-09 09:50:36,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1239. [2021-11-09 09:50:36,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 842 states have (on average 1.7790973871733966) internal successors, (1498), 1223 states have internal predecessors, (1498), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-09 09:50:36,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1548 transitions. [2021-11-09 09:50:36,475 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1548 transitions. Word has length 107 [2021-11-09 09:50:36,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:36,475 INFO L470 AbstractCegarLoop]: Abstraction has 1239 states and 1548 transitions. [2021-11-09 09:50:36,476 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) [2021-11-09 09:50:36,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1548 transitions. [2021-11-09 09:50:36,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 09:50:36,477 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:36,478 INFO L513 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:36,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-09 09:50:36,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:50:36,698 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:50:36,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:36,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1844395141, now seen corresponding path program 5 times [2021-11-09 09:50:36,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:50:36,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449543925] [2021-11-09 09:50:36,699 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:50:36,700 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:50:36,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:50:36,700 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:50:36,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95844921-4c18-4425-8877-5b6e6eb457ec/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-09 09:50:38,860 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-09 09:50:38,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:50:38,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-09 09:50:38,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:50:38,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:50:39,233 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-09 09:50:39,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-09 09:50:39,279 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 [2021-11-09 09:50:39,474 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