./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G --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 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:38:32,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:38:32,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:38:32,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:38:32,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:38:32,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:38:32,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:38:32,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:38:32,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:38:32,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:38:32,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:38:32,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:38:32,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:38:32,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:38:32,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:38:32,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:38:32,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:38:32,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:38:32,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:38:32,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:38:32,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:38:32,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:38:32,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:38:32,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:38:32,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:38:32,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:38:32,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:38:32,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:38:32,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:38:32,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:38:32,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:38:32,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:38:32,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:38:32,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:38:32,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:38:32,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:38:32,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:38:32,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:38:32,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:38:32,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:38:32,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:38:32,924 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-23 12:38:32,947 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:38:32,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:38:32,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:38:32,948 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:38:32,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:38:32,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:38:32,950 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:38:32,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:38:32,950 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:38:32,950 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 12:38:32,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:38:32,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:38:32,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:38:32,951 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 12:38:32,951 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 12:38:32,952 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 12:38:32,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:38:32,952 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 12:38:32,952 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:38:32,953 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:38:32,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:38:32,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:38:32,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:38:32,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:38:32,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:38:32,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:38:32,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:38:32,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:38:32,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:38:32,955 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_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 [2021-11-23 12:38:33,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:38:33,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:38:33,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:38:33,212 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:38:33,213 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:38:33,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2021-11-23 12:38:33,294 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/data/13bed1fcd/158bb547de064aedbaadf5c336d21c24/FLAGccb017d1a [2021-11-23 12:38:34,012 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:38:34,020 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2021-11-23 12:38:34,045 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/data/13bed1fcd/158bb547de064aedbaadf5c336d21c24/FLAGccb017d1a [2021-11-23 12:38:34,168 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/data/13bed1fcd/158bb547de064aedbaadf5c336d21c24 [2021-11-23 12:38:34,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:38:34,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:38:34,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:38:34,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:38:34,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:38:34,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:38:34" (1/1) ... [2021-11-23 12:38:34,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5153f372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:34, skipping insertion in model container [2021-11-23 12:38:34,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:38:34" (1/1) ... [2021-11-23 12:38:34,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:38:34,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:38:34,867 WARN L230 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_f6ba2a73-e1a3-4200-9dca-081f2735d779/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44118,44131] [2021-11-23 12:38:34,879 WARN L230 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_f6ba2a73-e1a3-4200-9dca-081f2735d779/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44660,44673] [2021-11-23 12:38:34,998 WARN L230 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_f6ba2a73-e1a3-4200-9dca-081f2735d779/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56247,56260] [2021-11-23 12:38:35,002 WARN L230 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_f6ba2a73-e1a3-4200-9dca-081f2735d779/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56368,56381] [2021-11-23 12:38:35,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:38:35,044 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) [2021-11-23 12:38:35,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c1ad2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:35, skipping insertion in model container [2021-11-23 12:38:35,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:38:35,045 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 12:38:35,047 INFO L158 Benchmark]: Toolchain (without parser) took 873.89ms. Allocated memory is still 109.1MB. Free memory was 73.4MB in the beginning and 69.4MB in the end (delta: 4.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 12:38:35,048 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 109.1MB. Free memory is still 65.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:38:35,049 INFO L158 Benchmark]: CACSL2BoogieTranslator took 871.04ms. Allocated memory is still 109.1MB. Free memory was 73.2MB in the beginning and 69.7MB in the end (delta: 3.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 12:38:35,054 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 109.1MB. Free memory is still 65.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 871.04ms. Allocated memory is still 109.1MB. Free memory was 73.2MB in the beginning and 69.7MB in the end (delta: 3.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G --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 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:38:37,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:38:37,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:38:37,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:38:37,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:38:37,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:38:37,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:38:37,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:38:37,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:38:37,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:38:37,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:38:37,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:38:37,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:38:37,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:38:37,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:38:37,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:38:37,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:38:37,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:38:37,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:38:37,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:38:37,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:38:37,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:38:37,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:38:37,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:38:37,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:38:37,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:38:37,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:38:37,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:38:37,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:38:37,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:38:37,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:38:37,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:38:37,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:38:37,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:38:37,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:38:37,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:38:37,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:38:37,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:38:37,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:38:37,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:38:37,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:38:37,519 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-23 12:38:37,550 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:38:37,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:38:37,553 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:38:37,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:38:37,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:38:37,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:38:37,556 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:38:37,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:38:37,557 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:38:37,557 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 12:38:37,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:38:37,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:38:37,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:38:37,559 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 12:38:37,559 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 12:38:37,559 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 12:38:37,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:38:37,560 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 12:38:37,560 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 12:38:37,560 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 12:38:37,560 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:38:37,561 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:38:37,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:38:37,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:38:37,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:38:37,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:38:37,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:38:37,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:38:37,562 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 12:38:37,563 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 12:38:37,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:38:37,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 12:38:37,564 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_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 [2021-11-23 12:38:37,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:38:37,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:38:37,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:38:37,964 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:38:37,965 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:38:37,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2021-11-23 12:38:38,054 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/data/3caa77653/19adabd8580c4395bf6bfbe76aace536/FLAG320e8ba93 [2021-11-23 12:38:38,940 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:38:38,941 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2021-11-23 12:38:38,961 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/data/3caa77653/19adabd8580c4395bf6bfbe76aace536/FLAG320e8ba93 [2021-11-23 12:38:39,087 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/data/3caa77653/19adabd8580c4395bf6bfbe76aace536 [2021-11-23 12:38:39,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:38:39,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:38:39,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:38:39,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:38:39,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:38:39,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:38:39" (1/1) ... [2021-11-23 12:38:39,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@780a2af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:39, skipping insertion in model container [2021-11-23 12:38:39,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:38:39" (1/1) ... [2021-11-23 12:38:39,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:38:39,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:38:39,849 WARN L230 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_f6ba2a73-e1a3-4200-9dca-081f2735d779/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44118,44131] [2021-11-23 12:38:39,871 WARN L230 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_f6ba2a73-e1a3-4200-9dca-081f2735d779/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44660,44673] [2021-11-23 12:38:40,031 WARN L230 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_f6ba2a73-e1a3-4200-9dca-081f2735d779/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56247,56260] [2021-11-23 12:38:40,033 WARN L230 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_f6ba2a73-e1a3-4200-9dca-081f2735d779/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56368,56381] [2021-11-23 12:38:40,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:38:40,054 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 12:38:40,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:38:40,098 WARN L230 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_f6ba2a73-e1a3-4200-9dca-081f2735d779/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44118,44131] [2021-11-23 12:38:40,115 WARN L230 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_f6ba2a73-e1a3-4200-9dca-081f2735d779/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44660,44673] [2021-11-23 12:38:40,240 WARN L230 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_f6ba2a73-e1a3-4200-9dca-081f2735d779/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56247,56260] [2021-11-23 12:38:40,266 WARN L230 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_f6ba2a73-e1a3-4200-9dca-081f2735d779/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56368,56381] [2021-11-23 12:38:40,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:38:40,281 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:38:40,320 WARN L230 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_f6ba2a73-e1a3-4200-9dca-081f2735d779/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44118,44131] [2021-11-23 12:38:40,322 WARN L230 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_f6ba2a73-e1a3-4200-9dca-081f2735d779/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44660,44673] [2021-11-23 12:38:40,379 WARN L230 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_f6ba2a73-e1a3-4200-9dca-081f2735d779/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56247,56260] [2021-11-23 12:38:40,380 WARN L230 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_f6ba2a73-e1a3-4200-9dca-081f2735d779/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56368,56381] [2021-11-23 12:38:40,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:38:40,499 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:38:40,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:40 WrapperNode [2021-11-23 12:38:40,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:38:40,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:38:40,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:38:40,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:38:40,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:40" (1/1) ... [2021-11-23 12:38:40,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:40" (1/1) ... [2021-11-23 12:38:40,631 INFO L137 Inliner]: procedures = 285, calls = 294, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 1173 [2021-11-23 12:38:40,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:38:40,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:38:40,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:38:40,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:38:40,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:40" (1/1) ... [2021-11-23 12:38:40,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:40" (1/1) ... [2021-11-23 12:38:40,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:40" (1/1) ... [2021-11-23 12:38:40,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:40" (1/1) ... [2021-11-23 12:38:40,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:40" (1/1) ... [2021-11-23 12:38:40,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:40" (1/1) ... [2021-11-23 12:38:40,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:40" (1/1) ... [2021-11-23 12:38:40,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:38:40,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:38:40,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:38:40,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:38:40,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:40" (1/1) ... [2021-11-23 12:38:40,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:38:40,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:38:40,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:38:40,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:38:40,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 12:38:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 12:38:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:38:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 12:38:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 12:38:40,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:38:40,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 12:38:40,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 12:38:40,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 12:38:40,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:38:40,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 12:38:40,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:38:40,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:38:41,222 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:38:41,224 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:38:46,588 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:38:46,618 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:38:46,618 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-23 12:38:46,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:38:46 BoogieIcfgContainer [2021-11-23 12:38:46,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:38:46,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:38:46,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:38:46,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:38:46,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:38:39" (1/3) ... [2021-11-23 12:38:46,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e8c1b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:38:46, skipping insertion in model container [2021-11-23 12:38:46,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:38:40" (2/3) ... [2021-11-23 12:38:46,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e8c1b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:38:46, skipping insertion in model container [2021-11-23 12:38:46,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:38:46" (3/3) ... [2021-11-23 12:38:46,640 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test6-1.i [2021-11-23 12:38:46,646 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:38:46,647 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 562 error locations. [2021-11-23 12:38:46,696 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:38:46,703 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 [2021-11-23 12:38:46,703 INFO L340 AbstractCegarLoop]: Starting to check reachability of 562 error locations. [2021-11-23 12:38:46,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 1154 states, 591 states have (on average 2.1844331641285955) internal successors, (1291), 1153 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:46,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 12:38:46,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:46,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 12:38:46,749 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:38:46,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:46,754 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-23 12:38:46,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:38:46,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80265636] [2021-11-23 12:38:46,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:46,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:38:46,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:38:46,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:38:46,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 12:38:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:46,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 12:38:46,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:38:47,048 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 [2021-11-23 12:38:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:47,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:38:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:47,083 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:38:47,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80265636] [2021-11-23 12:38:47,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80265636] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:38:47,084 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:38:47,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 12:38:47,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917200754] [2021-11-23 12:38:47,087 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:38:47,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:38:47,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:38:47,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:38:47,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:38:47,136 INFO L87 Difference]: Start difference. First operand has 1154 states, 591 states have (on average 2.1844331641285955) internal successors, (1291), 1153 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:49,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:49,569 INFO L93 Difference]: Finished difference Result 1137 states and 1195 transitions. [2021-11-23 12:38:49,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:38:49,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-23 12:38:49,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:49,607 INFO L225 Difference]: With dead ends: 1137 [2021-11-23 12:38:49,608 INFO L226 Difference]: Without dead ends: 1135 [2021-11-23 12:38:49,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:38:49,616 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 1066 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:49,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1066 Valid, 751 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 12:38:49,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2021-11-23 12:38:49,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1126. [2021-11-23 12:38:49,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 583 states have (on average 2.032590051457976) internal successors, (1185), 1125 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:49,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1185 transitions. [2021-11-23 12:38:49,733 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1185 transitions. Word has length 3 [2021-11-23 12:38:49,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:49,734 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1185 transitions. [2021-11-23 12:38:49,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:49,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1185 transitions. [2021-11-23 12:38:49,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 12:38:49,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:49,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 12:38:49,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:38:49,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:38:49,945 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:38:49,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:49,947 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-23 12:38:49,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:38:49,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516570767] [2021-11-23 12:38:49,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:49,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:38:49,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:38:49,950 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:38:49,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 12:38:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:50,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:38:50,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:38:50,093 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 [2021-11-23 12:38:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:50,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:38:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:50,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:38:50,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516570767] [2021-11-23 12:38:50,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516570767] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:38:50,156 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:38:50,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 12:38:50,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569616676] [2021-11-23 12:38:50,157 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:38:50,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:38:50,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:38:50,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:38:50,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:38:50,159 INFO L87 Difference]: Start difference. First operand 1126 states and 1185 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:55,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:55,281 INFO L93 Difference]: Finished difference Result 1631 states and 1722 transitions. [2021-11-23 12:38:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:38:55,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-23 12:38:55,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:55,294 INFO L225 Difference]: With dead ends: 1631 [2021-11-23 12:38:55,294 INFO L226 Difference]: Without dead ends: 1631 [2021-11-23 12:38:55,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:38:55,297 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 1673 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1673 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:55,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1673 Valid, 1527 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-23 12:38:55,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2021-11-23 12:38:55,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1162. [2021-11-23 12:38:55,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 628 states have (on average 2.0143312101910826) internal successors, (1265), 1161 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:55,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1265 transitions. [2021-11-23 12:38:55,350 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1265 transitions. Word has length 3 [2021-11-23 12:38:55,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:55,350 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 1265 transitions. [2021-11-23 12:38:55,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:55,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1265 transitions. [2021-11-23 12:38:55,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 12:38:55,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:55,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:55,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:38:55,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:38:55,565 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:38:55,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:55,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1929648752, now seen corresponding path program 1 times [2021-11-23 12:38:55,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:38:55,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597188089] [2021-11-23 12:38:55,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:55,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:38:55,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:38:55,569 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:38:55,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 12:38:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:55,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:38:55,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:38:55,744 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 [2021-11-23 12:38:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:55,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:38:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:55,838 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:38:55,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597188089] [2021-11-23 12:38:55,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597188089] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:38:55,838 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:38:55,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 12:38:55,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548986980] [2021-11-23 12:38:55,839 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:38:55,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:38:55,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:38:55,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:38:55,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:38:55,841 INFO L87 Difference]: Start difference. First operand 1162 states and 1265 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:58,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:58,525 INFO L93 Difference]: Finished difference Result 1524 states and 1652 transitions. [2021-11-23 12:38:58,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:38:58,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 12:38:58,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:58,534 INFO L225 Difference]: With dead ends: 1524 [2021-11-23 12:38:58,534 INFO L226 Difference]: Without dead ends: 1524 [2021-11-23 12:38:58,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:38:58,536 INFO L933 BasicCegarLoop]: 1028 mSDtfsCounter, 2072 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:58,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2072 Valid, 1610 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-23 12:38:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-11-23 12:38:58,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1114. [2021-11-23 12:38:58,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 628 states have (on average 1.9331210191082802) internal successors, (1214), 1113 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:58,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1214 transitions. [2021-11-23 12:38:58,564 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1214 transitions. Word has length 9 [2021-11-23 12:38:58,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:58,564 INFO L470 AbstractCegarLoop]: Abstraction has 1114 states and 1214 transitions. [2021-11-23 12:38:58,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:58,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1214 transitions. [2021-11-23 12:38:58,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 12:38:58,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:58,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:58,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-23 12:38:58,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:38:58,776 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:38:58,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:58,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1929648753, now seen corresponding path program 1 times [2021-11-23 12:38:58,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:38:58,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171612409] [2021-11-23 12:38:58,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:58,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:38:58,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:38:58,779 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:38:58,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 12:38:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:58,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:38:58,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:38:58,933 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 [2021-11-23 12:38:58,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:58,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:38:59,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:59,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:38:59,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171612409] [2021-11-23 12:38:59,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171612409] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:38:59,148 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:38:59,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 12:38:59,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486033740] [2021-11-23 12:38:59,149 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:38:59,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:38:59,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:38:59,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:38:59,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:38:59,150 INFO L87 Difference]: Start difference. First operand 1114 states and 1214 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:07,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:07,215 INFO L93 Difference]: Finished difference Result 1591 states and 1683 transitions. [2021-11-23 12:39:07,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:39:07,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 12:39:07,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:07,223 INFO L225 Difference]: With dead ends: 1591 [2021-11-23 12:39:07,223 INFO L226 Difference]: Without dead ends: 1591 [2021-11-23 12:39:07,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:39:07,224 INFO L933 BasicCegarLoop]: 1253 mSDtfsCounter, 1479 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 3205 SdHoareTripleChecker+Invalid, 2085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:07,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1479 Valid, 3205 Invalid, 2085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2021-11-23 12:39:07,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2021-11-23 12:39:07,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1104. [2021-11-23 12:39:07,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 628 states have (on average 1.9124203821656052) internal successors, (1201), 1103 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:07,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1201 transitions. [2021-11-23 12:39:07,254 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1201 transitions. Word has length 9 [2021-11-23 12:39:07,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:07,255 INFO L470 AbstractCegarLoop]: Abstraction has 1104 states and 1201 transitions. [2021-11-23 12:39:07,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:07,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1201 transitions. [2021-11-23 12:39:07,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 12:39:07,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:07,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:07,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 12:39:07,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:39:07,467 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr555ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:39:07,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:07,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1986319691, now seen corresponding path program 1 times [2021-11-23 12:39:07,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:39:07,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454271238] [2021-11-23 12:39:07,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:07,468 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:39:07,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:39:07,469 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:39:07,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 12:39:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:07,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:39:07,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:07,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:07,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:07,730 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:39:07,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454271238] [2021-11-23 12:39:07,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454271238] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:07,731 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:07,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 12:39:07,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396919606] [2021-11-23 12:39:07,731 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:07,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:39:07,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:39:07,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:39:07,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:39:07,733 INFO L87 Difference]: Start difference. First operand 1104 states and 1201 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:08,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:08,558 INFO L93 Difference]: Finished difference Result 1589 states and 1718 transitions. [2021-11-23 12:39:08,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:39:08,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 12:39:08,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:08,569 INFO L225 Difference]: With dead ends: 1589 [2021-11-23 12:39:08,569 INFO L226 Difference]: Without dead ends: 1589 [2021-11-23 12:39:08,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:39:08,573 INFO L933 BasicCegarLoop]: 1176 mSDtfsCounter, 647 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 3165 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:08,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 3165 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 12:39:08,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2021-11-23 12:39:08,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1343. [2021-11-23 12:39:08,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 867 states have (on average 1.9077277970011535) internal successors, (1654), 1342 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:08,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1654 transitions. [2021-11-23 12:39:08,615 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1654 transitions. Word has length 11 [2021-11-23 12:39:08,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:08,616 INFO L470 AbstractCegarLoop]: Abstraction has 1343 states and 1654 transitions. [2021-11-23 12:39:08,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:08,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1654 transitions. [2021-11-23 12:39:08,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 12:39:08,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:08,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:08,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 12:39:08,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:39:08,832 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr558ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:39:08,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:08,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1887735742, now seen corresponding path program 1 times [2021-11-23 12:39:08,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:39:08,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548700841] [2021-11-23 12:39:08,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:08,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:39:08,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:39:08,834 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:39:08,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 12:39:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:09,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:39:09,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:09,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 12:39:09,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 12:39:09,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 12:39:09,090 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-23 12:39:09,091 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 [2021-11-23 12:39:09,158 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-23 12:39:09,161 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 [2021-11-23 12:39:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:09,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:09,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:09,265 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:39:09,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548700841] [2021-11-23 12:39:09,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548700841] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:09,265 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:09,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 12:39:09,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442257224] [2021-11-23 12:39:09,266 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:09,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:39:09,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:39:09,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:39:09,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:39:09,268 INFO L87 Difference]: Start difference. First operand 1343 states and 1654 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:11,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:11,592 INFO L93 Difference]: Finished difference Result 1738 states and 2108 transitions. [2021-11-23 12:39:11,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:39:11,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 12:39:11,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:11,601 INFO L225 Difference]: With dead ends: 1738 [2021-11-23 12:39:11,602 INFO L226 Difference]: Without dead ends: 1738 [2021-11-23 12:39:11,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:39:11,603 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 394 mSDsluCounter, 2950 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 4010 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:11,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 4010 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 12:39:11,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2021-11-23 12:39:11,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1342. [2021-11-23 12:39:11,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 866 states have (on average 1.907621247113164) internal successors, (1652), 1341 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:11,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1652 transitions. [2021-11-23 12:39:11,648 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1652 transitions. Word has length 13 [2021-11-23 12:39:11,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:11,648 INFO L470 AbstractCegarLoop]: Abstraction has 1342 states and 1652 transitions. [2021-11-23 12:39:11,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:11,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1652 transitions. [2021-11-23 12:39:11,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 12:39:11,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:11,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:11,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-23 12:39:11,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:39:11,863 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:39:11,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:11,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1153072931, now seen corresponding path program 1 times [2021-11-23 12:39:11,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:39:11,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145624398] [2021-11-23 12:39:11,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:11,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:39:11,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:39:11,866 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:39:11,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 12:39:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:12,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 12:39:12,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:12,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:12,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:12,111 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:39:12,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145624398] [2021-11-23 12:39:12,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145624398] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:12,112 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:12,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 12:39:12,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35259847] [2021-11-23 12:39:12,112 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:12,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:39:12,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:39:12,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:39:12,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:39:12,114 INFO L87 Difference]: Start difference. First operand 1342 states and 1652 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:12,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:12,149 INFO L93 Difference]: Finished difference Result 1282 states and 1566 transitions. [2021-11-23 12:39:12,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:39:12,150 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 12:39:12,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:12,156 INFO L225 Difference]: With dead ends: 1282 [2021-11-23 12:39:12,157 INFO L226 Difference]: Without dead ends: 1282 [2021-11-23 12:39:12,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:39:12,158 INFO L933 BasicCegarLoop]: 1071 mSDtfsCounter, 1065 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:12,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1065 Valid, 1101 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:39:12,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2021-11-23 12:39:12,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1282. [2021-11-23 12:39:12,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 830 states have (on average 1.8867469879518073) internal successors, (1566), 1281 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:12,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1566 transitions. [2021-11-23 12:39:12,187 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1566 transitions. Word has length 19 [2021-11-23 12:39:12,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:12,188 INFO L470 AbstractCegarLoop]: Abstraction has 1282 states and 1566 transitions. [2021-11-23 12:39:12,188 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:12,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1566 transitions. [2021-11-23 12:39:12,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 12:39:12,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:12,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:12,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 12:39:12,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:39:12,403 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:39:12,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:12,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1529130, now seen corresponding path program 1 times [2021-11-23 12:39:12,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:39:12,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134612278] [2021-11-23 12:39:12,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:12,404 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:39:12,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:39:12,405 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:39:12,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 12:39:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:12,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:39:12,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:12,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:12,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:12,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:12,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:39:12,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134612278] [2021-11-23 12:39:12,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134612278] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:12,659 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:12,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 12:39:12,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845228903] [2021-11-23 12:39:12,660 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:12,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:39:12,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:39:12,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:39:12,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:39:12,661 INFO L87 Difference]: Start difference. First operand 1282 states and 1566 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:12,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:12,765 INFO L93 Difference]: Finished difference Result 1254 states and 1510 transitions. [2021-11-23 12:39:12,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:39:12,766 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-23 12:39:12,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:12,774 INFO L225 Difference]: With dead ends: 1254 [2021-11-23 12:39:12,774 INFO L226 Difference]: Without dead ends: 1254 [2021-11-23 12:39:12,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:39:12,775 INFO L933 BasicCegarLoop]: 1026 mSDtfsCounter, 1036 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:12,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 2075 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:39:12,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-11-23 12:39:12,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1252. [2021-11-23 12:39:12,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 814 states have (on average 1.8525798525798525) internal successors, (1508), 1251 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:12,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1508 transitions. [2021-11-23 12:39:12,805 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1508 transitions. Word has length 21 [2021-11-23 12:39:12,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:12,806 INFO L470 AbstractCegarLoop]: Abstraction has 1252 states and 1508 transitions. [2021-11-23 12:39:12,806 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:12,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1508 transitions. [2021-11-23 12:39:12,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 12:39:12,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:12,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:12,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 12:39:13,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:39:13,022 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:39:13,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:13,022 INFO L85 PathProgramCache]: Analyzing trace with hash 270814884, now seen corresponding path program 1 times [2021-11-23 12:39:13,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:39:13,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280152030] [2021-11-23 12:39:13,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:13,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:39:13,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:39:13,024 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:39:13,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 12:39:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:13,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:39:13,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:13,162 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 [2021-11-23 12:39:13,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:13,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:13,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:13,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:39:13,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280152030] [2021-11-23 12:39:13,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280152030] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:13,420 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:13,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 12:39:13,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067638208] [2021-11-23 12:39:13,420 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:13,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:39:13,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:39:13,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:39:13,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:39:13,422 INFO L87 Difference]: Start difference. First operand 1252 states and 1508 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:16,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:16,415 INFO L93 Difference]: Finished difference Result 1745 states and 2121 transitions. [2021-11-23 12:39:16,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:39:16,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-23 12:39:16,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:16,423 INFO L225 Difference]: With dead ends: 1745 [2021-11-23 12:39:16,423 INFO L226 Difference]: Without dead ends: 1745 [2021-11-23 12:39:16,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:39:16,424 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 2785 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2785 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:16,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2785 Valid, 1436 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-23 12:39:16,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2021-11-23 12:39:16,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1248. [2021-11-23 12:39:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 814 states have (on average 1.8427518427518428) internal successors, (1500), 1247 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:16,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1500 transitions. [2021-11-23 12:39:16,455 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1500 transitions. Word has length 35 [2021-11-23 12:39:16,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:16,456 INFO L470 AbstractCegarLoop]: Abstraction has 1248 states and 1500 transitions. [2021-11-23 12:39:16,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:16,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1500 transitions. [2021-11-23 12:39:16,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 12:39:16,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:16,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:16,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 12:39:16,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:39:16,679 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:39:16,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:16,680 INFO L85 PathProgramCache]: Analyzing trace with hash 270814885, now seen corresponding path program 1 times [2021-11-23 12:39:16,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:39:16,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751439182] [2021-11-23 12:39:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:16,681 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:39:16,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:39:16,682 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:39:16,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 12:39:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:16,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 12:39:16,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:16,873 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 [2021-11-23 12:39:17,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:17,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:17,784 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:39:17,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751439182] [2021-11-23 12:39:17,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751439182] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:17,785 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:17,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 12:39:17,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837198552] [2021-11-23 12:39:17,785 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:17,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:39:17,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:39:17,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:39:17,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:39:17,787 INFO L87 Difference]: Start difference. First operand 1248 states and 1500 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:26,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:26,493 INFO L93 Difference]: Finished difference Result 1900 states and 2299 transitions. [2021-11-23 12:39:26,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:39:26,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-23 12:39:26,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:26,502 INFO L225 Difference]: With dead ends: 1900 [2021-11-23 12:39:26,502 INFO L226 Difference]: Without dead ends: 1900 [2021-11-23 12:39:26,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:39:26,503 INFO L933 BasicCegarLoop]: 1311 mSDtfsCounter, 3221 mSDsluCounter, 1986 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3221 SdHoareTripleChecker+Valid, 3297 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:26,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3221 Valid, 3297 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2021-11-23 12:39:26,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2021-11-23 12:39:26,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1244. [2021-11-23 12:39:26,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 814 states have (on average 1.8329238329238329) internal successors, (1492), 1243 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:26,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1492 transitions. [2021-11-23 12:39:26,531 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1492 transitions. Word has length 35 [2021-11-23 12:39:26,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:26,532 INFO L470 AbstractCegarLoop]: Abstraction has 1244 states and 1492 transitions. [2021-11-23 12:39:26,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:26,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1492 transitions. [2021-11-23 12:39:26,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-23 12:39:26,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:26,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:26,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-23 12:39:26,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:39:26,753 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:39:26,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:26,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1615578914, now seen corresponding path program 1 times [2021-11-23 12:39:26,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:39:26,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748682033] [2021-11-23 12:39:26,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:26,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:39:26,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:39:26,756 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:39:26,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 12:39:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:26,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:39:26,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:27,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:27,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:27,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:27,194 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:39:27,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748682033] [2021-11-23 12:39:27,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748682033] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:27,195 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:27,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 12:39:27,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474919899] [2021-11-23 12:39:27,195 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:27,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:39:27,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:39:27,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:39:27,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:39:27,197 INFO L87 Difference]: Start difference. First operand 1244 states and 1492 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:27,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:27,244 INFO L93 Difference]: Finished difference Result 1232 states and 1472 transitions. [2021-11-23 12:39:27,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:39:27,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-23 12:39:27,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:27,249 INFO L225 Difference]: With dead ends: 1232 [2021-11-23 12:39:27,250 INFO L226 Difference]: Without dead ends: 1232 [2021-11-23 12:39:27,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:39:27,251 INFO L933 BasicCegarLoop]: 1020 mSDtfsCounter, 1012 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:27,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1012 Valid, 2038 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:39:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2021-11-23 12:39:27,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1232. [2021-11-23 12:39:27,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 802 states have (on average 1.8354114713216958) internal successors, (1472), 1231 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:27,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1472 transitions. [2021-11-23 12:39:27,273 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1472 transitions. Word has length 53 [2021-11-23 12:39:27,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:27,274 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 1472 transitions. [2021-11-23 12:39:27,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:27,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1472 transitions. [2021-11-23 12:39:27,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 12:39:27,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:27,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:27,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 12:39:27,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:39:27,488 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:39:27,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:27,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1057136622, now seen corresponding path program 1 times [2021-11-23 12:39:27,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:39:27,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555887854] [2021-11-23 12:39:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:27,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:39:27,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:39:27,490 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:39:27,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 12:39:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:27,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:39:27,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:27,941 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 12:39:27,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-23 12:39:28,149 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-23 12:39:28,152 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 3 case distinctions, treesize of input 41 treesize of output 52 [2021-11-23 12:39:29,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:29,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:32,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:32,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:39:32,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555887854] [2021-11-23 12:39:32,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555887854] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:32,016 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:32,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 5 [2021-11-23 12:39:32,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406871967] [2021-11-23 12:39:32,016 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:32,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:39:32,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:39:32,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:39:32,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=20, Unknown=1, NotChecked=0, Total=42 [2021-11-23 12:39:32,018 INFO L87 Difference]: Start difference. First operand 1232 states and 1472 transitions. Second operand has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:32,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:32,046 INFO L93 Difference]: Finished difference Result 1236 states and 1477 transitions. [2021-11-23 12:39:32,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:39:32,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-23 12:39:32,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:32,053 INFO L225 Difference]: With dead ends: 1236 [2021-11-23 12:39:32,054 INFO L226 Difference]: Without dead ends: 1236 [2021-11-23 12:39:32,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=21, Invalid=20, Unknown=1, NotChecked=0, Total=42 [2021-11-23 12:39:32,055 INFO L933 BasicCegarLoop]: 1001 mSDtfsCounter, 80 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 457 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:32,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 1606 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 457 Unchecked, 0.0s Time] [2021-11-23 12:39:32,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2021-11-23 12:39:32,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1236. [2021-11-23 12:39:32,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 806 states have (on average 1.8325062034739454) internal successors, (1477), 1235 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:32,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1477 transitions. [2021-11-23 12:39:32,079 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1477 transitions. Word has length 61 [2021-11-23 12:39:32,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:32,079 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 1477 transitions. [2021-11-23 12:39:32,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:32,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1477 transitions. [2021-11-23 12:39:32,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 12:39:32,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:32,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:32,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 12:39:32,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:39:32,297 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:39:32,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:32,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1057136623, now seen corresponding path program 1 times [2021-11-23 12:39:32,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:39:32,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380139988] [2021-11-23 12:39:32,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:32,298 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:39:32,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:39:32,299 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:39:32,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 12:39:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:32,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 12:39:32,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:32,715 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 12:39:32,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-23 12:39:32,724 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 12:39:32,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-23 12:39:32,873 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-23 12:39:32,873 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 3 case distinctions, treesize of input 17 treesize of output 30 [2021-11-23 12:39:38,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:38,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:40,829 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:39:40,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380139988] [2021-11-23 12:39:40,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380139988] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:40,829 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:40,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 9 [2021-11-23 12:39:40,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264483999] [2021-11-23 12:39:40,829 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:40,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 12:39:40,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:39:40,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 12:39:40,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-23 12:39:40,831 INFO L87 Difference]: Start difference. First operand 1236 states and 1477 transitions. Second operand has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:45,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:45,920 INFO L93 Difference]: Finished difference Result 1236 states and 1476 transitions. [2021-11-23 12:39:45,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 12:39:45,921 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-23 12:39:45,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:45,929 INFO L225 Difference]: With dead ends: 1236 [2021-11-23 12:39:45,929 INFO L226 Difference]: Without dead ends: 1236 [2021-11-23 12:39:45,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-23 12:39:45,931 INFO L933 BasicCegarLoop]: 1001 mSDtfsCounter, 78 mSDsluCounter, 2533 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 3534 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1161 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:45,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 3534 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 0 Unknown, 1161 Unchecked, 5.0s Time] [2021-11-23 12:39:45,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2021-11-23 12:39:45,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1236. [2021-11-23 12:39:45,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 806 states have (on average 1.8312655086848635) internal successors, (1476), 1235 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:45,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1476 transitions. [2021-11-23 12:39:45,958 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1476 transitions. Word has length 61 [2021-11-23 12:39:45,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:45,959 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 1476 transitions. [2021-11-23 12:39:45,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:45,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1476 transitions. [2021-11-23 12:39:45,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 12:39:45,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:45,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:45,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 12:39:46,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:39:46,177 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr72ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:39:46,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:46,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1137699215, now seen corresponding path program 1 times [2021-11-23 12:39:46,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:39:46,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373019618] [2021-11-23 12:39:46,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:46,179 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:39:46,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:39:46,180 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:39:46,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 12:39:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:46,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:39:46,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:46,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:46,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:46,575 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:39:46,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373019618] [2021-11-23 12:39:46,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373019618] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:46,575 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:46,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 12:39:46,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136328651] [2021-11-23 12:39:46,576 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:46,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:39:46,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:39:46,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:39:46,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:39:46,577 INFO L87 Difference]: Start difference. First operand 1236 states and 1476 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:46,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:46,896 INFO L93 Difference]: Finished difference Result 3532 states and 4254 transitions. [2021-11-23 12:39:46,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:39:46,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-23 12:39:46,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:46,914 INFO L225 Difference]: With dead ends: 3532 [2021-11-23 12:39:46,914 INFO L226 Difference]: Without dead ends: 3532 [2021-11-23 12:39:46,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:39:46,915 INFO L933 BasicCegarLoop]: 2947 mSDtfsCounter, 2037 mSDsluCounter, 5806 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 8753 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:46,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2037 Valid, 8753 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:39:46,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3532 states. [2021-11-23 12:39:46,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3532 to 1234. [2021-11-23 12:39:46,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 805 states have (on average 1.831055900621118) internal successors, (1474), 1233 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:46,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1474 transitions. [2021-11-23 12:39:46,944 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1474 transitions. Word has length 65 [2021-11-23 12:39:46,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:46,944 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1474 transitions. [2021-11-23 12:39:46,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:46,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1474 transitions. [2021-11-23 12:39:46,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 12:39:46,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:46,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:46,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 12:39:47,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:39:47,159 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:39:47,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:47,159 INFO L85 PathProgramCache]: Analyzing trace with hash -908599332, now seen corresponding path program 1 times [2021-11-23 12:39:47,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:39:47,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716796739] [2021-11-23 12:39:47,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:47,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:39:47,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:39:47,162 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:39:47,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 12:39:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:47,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:39:47,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:47,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:47,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:47,753 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:39:47,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716796739] [2021-11-23 12:39:47,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716796739] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:47,753 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:47,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 12:39:47,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797428377] [2021-11-23 12:39:47,754 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:47,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:39:47,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:39:47,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:39:47,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:39:47,755 INFO L87 Difference]: Start difference. First operand 1234 states and 1474 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:47,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:47,846 INFO L93 Difference]: Finished difference Result 3114 states and 3778 transitions. [2021-11-23 12:39:47,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:39:47,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-23 12:39:47,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:47,860 INFO L225 Difference]: With dead ends: 3114 [2021-11-23 12:39:47,860 INFO L226 Difference]: Without dead ends: 3114 [2021-11-23 12:39:47,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:39:47,861 INFO L933 BasicCegarLoop]: 2497 mSDtfsCounter, 1538 mSDsluCounter, 3480 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 5977 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:47,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 5977 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:39:47,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2021-11-23 12:39:47,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 1490. [2021-11-23 12:39:47,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1061 states have (on average 1.8256361922714421) internal successors, (1937), 1489 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:47,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 1937 transitions. [2021-11-23 12:39:47,890 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 1937 transitions. Word has length 66 [2021-11-23 12:39:47,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:47,891 INFO L470 AbstractCegarLoop]: Abstraction has 1490 states and 1937 transitions. [2021-11-23 12:39:47,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:47,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 1937 transitions. [2021-11-23 12:39:47,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 12:39:47,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:47,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:47,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 12:39:48,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:39:48,106 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:39:48,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:48,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1606232379, now seen corresponding path program 1 times [2021-11-23 12:39:48,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:39:48,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541080553] [2021-11-23 12:39:48,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:48,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:39:48,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:39:48,109 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:39:48,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 12:39:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:48,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 12:39:48,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:48,549 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 [2021-11-23 12:39:48,555 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 [2021-11-23 12:39:49,308 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 12:39:49,308 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 [2021-11-23 12:39:49,322 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 12:39:49,322 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 19 treesize of output 19 [2021-11-23 12:39:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:49,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:51,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:51,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:39:51,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541080553] [2021-11-23 12:39:51,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541080553] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:51,996 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:51,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 12:39:51,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889113879] [2021-11-23 12:39:51,996 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:51,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:39:51,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:39:51,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:39:51,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:39:51,997 INFO L87 Difference]: Start difference. First operand 1490 states and 1937 transitions. Second operand has 8 states, 7 states have (on average 18.857142857142858) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:55,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:55,792 INFO L93 Difference]: Finished difference Result 1942 states and 2489 transitions. [2021-11-23 12:39:55,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:39:55,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 18.857142857142858) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-23 12:39:55,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:55,803 INFO L225 Difference]: With dead ends: 1942 [2021-11-23 12:39:55,803 INFO L226 Difference]: Without dead ends: 1942 [2021-11-23 12:39:55,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:39:55,804 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 4480 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4480 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 655 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:55,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4480 Valid, 947 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1269 Invalid, 0 Unknown, 655 Unchecked, 3.7s Time] [2021-11-23 12:39:55,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2021-11-23 12:39:55,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1451. [2021-11-23 12:39:55,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1061 states have (on average 1.765315739868049) internal successors, (1873), 1450 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:55,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 1873 transitions. [2021-11-23 12:39:55,835 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 1873 transitions. Word has length 68 [2021-11-23 12:39:55,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:55,835 INFO L470 AbstractCegarLoop]: Abstraction has 1451 states and 1873 transitions. [2021-11-23 12:39:55,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 18.857142857142858) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:55,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 1873 transitions. [2021-11-23 12:39:55,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 12:39:55,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:55,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:55,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 12:39:56,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:39:56,041 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr79ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:39:56,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:56,042 INFO L85 PathProgramCache]: Analyzing trace with hash -781624314, now seen corresponding path program 1 times [2021-11-23 12:39:56,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:39:56,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70945513] [2021-11-23 12:39:56,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:56,042 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:39:56,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:39:56,043 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:39:56,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 12:39:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:56,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 12:39:56,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:56,357 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 [2021-11-23 12:39:56,378 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 [2021-11-23 12:39:56,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 12:39:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:56,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:56,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:56,569 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:39:56,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70945513] [2021-11-23 12:39:56,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70945513] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:56,570 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:56,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-23 12:39:56,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875697446] [2021-11-23 12:39:56,570 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:56,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:39:56,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:39:56,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:39:56,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:39:56,572 INFO L87 Difference]: Start difference. First operand 1451 states and 1873 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:01,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:01,602 INFO L93 Difference]: Finished difference Result 2172 states and 2733 transitions. [2021-11-23 12:40:01,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 12:40:01,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-23 12:40:01,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:01,608 INFO L225 Difference]: With dead ends: 2172 [2021-11-23 12:40:01,608 INFO L226 Difference]: Without dead ends: 2172 [2021-11-23 12:40:01,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 137 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-11-23 12:40:01,609 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 1786 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 3165 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:01,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1786 Valid, 3165 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-23 12:40:01,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2021-11-23 12:40:01,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1450. [2021-11-23 12:40:01,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1061 states have (on average 1.764373232799246) internal successors, (1872), 1449 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:01,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1872 transitions. [2021-11-23 12:40:01,637 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1872 transitions. Word has length 74 [2021-11-23 12:40:01,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:01,637 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 1872 transitions. [2021-11-23 12:40:01,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:01,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1872 transitions. [2021-11-23 12:40:01,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-23 12:40:01,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:01,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:01,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-23 12:40:01,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:40:01,840 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr80ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:40:01,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:01,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1539450402, now seen corresponding path program 1 times [2021-11-23 12:40:01,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:40:01,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852437130] [2021-11-23 12:40:01,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:01,841 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:40:01,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:40:01,842 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:40:01,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 12:40:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:02,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 12:40:02,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:40:02,159 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 [2021-11-23 12:40:02,192 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 [2021-11-23 12:40:02,199 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 [2021-11-23 12:40:02,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-23 12:40:02,264 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 [2021-11-23 12:40:02,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:02,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:40:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:02,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:40:02,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852437130] [2021-11-23 12:40:02,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852437130] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:02,902 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:02,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-23 12:40:02,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267758721] [2021-11-23 12:40:02,904 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:02,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 12:40:02,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:40:02,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 12:40:02,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-23 12:40:02,906 INFO L87 Difference]: Start difference. First operand 1450 states and 1872 transitions. Second operand has 14 states, 13 states have (on average 7.0) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:25,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:25,239 INFO L93 Difference]: Finished difference Result 3447 states and 4392 transitions. [2021-11-23 12:40:25,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 12:40:25,240 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.0) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-23 12:40:25,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:25,245 INFO L225 Difference]: With dead ends: 3447 [2021-11-23 12:40:25,246 INFO L226 Difference]: Without dead ends: 3447 [2021-11-23 12:40:25,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:40:25,247 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 3323 mSDsluCounter, 5300 mSDsCounter, 0 mSdLazyCounter, 4331 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3323 SdHoareTripleChecker+Valid, 5946 SdHoareTripleChecker+Invalid, 4352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 4331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:25,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3323 Valid, 5946 Invalid, 4352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 4331 Invalid, 0 Unknown, 0 Unchecked, 21.6s Time] [2021-11-23 12:40:25,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-11-23 12:40:25,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 1449. [2021-11-23 12:40:25,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1061 states have (on average 1.763430725730443) internal successors, (1871), 1448 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:25,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1871 transitions. [2021-11-23 12:40:25,280 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1871 transitions. Word has length 75 [2021-11-23 12:40:25,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:25,280 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1871 transitions. [2021-11-23 12:40:25,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.0) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:25,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1871 transitions. [2021-11-23 12:40:25,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 12:40:25,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:25,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:25,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-23 12:40:25,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:40:25,496 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:40:25,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:25,496 INFO L85 PathProgramCache]: Analyzing trace with hash -730014349, now seen corresponding path program 1 times [2021-11-23 12:40:25,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:40:25,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910238310] [2021-11-23 12:40:25,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:25,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:40:25,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:40:25,498 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:40:25,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 12:40:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:25,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:40:25,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:40:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:25,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:40:25,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:25,928 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:40:25,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910238310] [2021-11-23 12:40:25,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910238310] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:25,928 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:25,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 12:40:25,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741417465] [2021-11-23 12:40:25,929 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:25,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:40:25,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:40:25,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:40:25,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:40:25,930 INFO L87 Difference]: Start difference. First operand 1449 states and 1871 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:26,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:26,070 INFO L93 Difference]: Finished difference Result 2728 states and 3529 transitions. [2021-11-23 12:40:26,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:40:26,071 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-23 12:40:26,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:26,074 INFO L225 Difference]: With dead ends: 2728 [2021-11-23 12:40:26,075 INFO L226 Difference]: Without dead ends: 2728 [2021-11-23 12:40:26,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:40:26,075 INFO L933 BasicCegarLoop]: 1257 mSDtfsCounter, 966 mSDsluCounter, 4596 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 5853 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:26,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [966 Valid, 5853 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:40:26,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2728 states. [2021-11-23 12:40:26,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2728 to 1452. [2021-11-23 12:40:26,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1064 states have (on average 1.7612781954887218) internal successors, (1874), 1451 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:26,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1874 transitions. [2021-11-23 12:40:26,106 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1874 transitions. Word has length 80 [2021-11-23 12:40:26,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:26,107 INFO L470 AbstractCegarLoop]: Abstraction has 1452 states and 1874 transitions. [2021-11-23 12:40:26,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:26,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1874 transitions. [2021-11-23 12:40:26,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 12:40:26,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:26,108 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:26,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-23 12:40:26,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:40:26,326 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:40:26,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:26,326 INFO L85 PathProgramCache]: Analyzing trace with hash 937545843, now seen corresponding path program 1 times [2021-11-23 12:40:26,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:40:26,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459051582] [2021-11-23 12:40:26,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:26,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:40:26,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:40:26,327 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:40:26,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 12:40:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:26,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:40:26,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:40:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:26,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:40:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:26,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:40:26,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459051582] [2021-11-23 12:40:26,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459051582] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:40:26,995 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:40:26,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-23 12:40:26,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55052908] [2021-11-23 12:40:26,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:40:26,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:40:26,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:40:26,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:40:26,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:40:26,997 INFO L87 Difference]: Start difference. First operand 1452 states and 1874 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:27,552 INFO L93 Difference]: Finished difference Result 2277 states and 2896 transitions. [2021-11-23 12:40:27,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 12:40:27,553 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-23 12:40:27,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:27,556 INFO L225 Difference]: With dead ends: 2277 [2021-11-23 12:40:27,556 INFO L226 Difference]: Without dead ends: 2277 [2021-11-23 12:40:27,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2021-11-23 12:40:27,557 INFO L933 BasicCegarLoop]: 1042 mSDtfsCounter, 808 mSDsluCounter, 5730 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 6772 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:27,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 6772 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:40:27,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2021-11-23 12:40:27,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 1458. [2021-11-23 12:40:27,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1070 states have (on average 1.7570093457943925) internal successors, (1880), 1457 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:27,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1880 transitions. [2021-11-23 12:40:27,580 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1880 transitions. Word has length 82 [2021-11-23 12:40:27,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:27,580 INFO L470 AbstractCegarLoop]: Abstraction has 1458 states and 1880 transitions. [2021-11-23 12:40:27,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:27,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1880 transitions. [2021-11-23 12:40:27,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 12:40:27,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:27,582 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:27,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 12:40:27,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:40:27,793 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:40:27,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:27,793 INFO L85 PathProgramCache]: Analyzing trace with hash -947292557, now seen corresponding path program 2 times [2021-11-23 12:40:27,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:40:27,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651049914] [2021-11-23 12:40:27,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:40:27,794 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:40:27,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:40:27,795 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:40:27,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 12:40:28,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:40:28,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:40:28,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 12:40:28,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:40:28,488 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:28,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:40:29,055 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:29,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:40:29,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651049914] [2021-11-23 12:40:29,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651049914] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:40:29,056 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:40:29,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-23 12:40:29,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187876757] [2021-11-23 12:40:29,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:40:29,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 12:40:29,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:40:29,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 12:40:29,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-23 12:40:29,058 INFO L87 Difference]: Start difference. First operand 1458 states and 1880 transitions. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:32,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:32,327 INFO L93 Difference]: Finished difference Result 7954 states and 10352 transitions. [2021-11-23 12:40:32,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-23 12:40:32,328 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-23 12:40:32,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:32,344 INFO L225 Difference]: With dead ends: 7954 [2021-11-23 12:40:32,344 INFO L226 Difference]: Without dead ends: 7954 [2021-11-23 12:40:32,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=442, Invalid=964, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 12:40:32,345 INFO L933 BasicCegarLoop]: 4646 mSDtfsCounter, 11622 mSDsluCounter, 27975 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11622 SdHoareTripleChecker+Valid, 32621 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:32,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11622 Valid, 32621 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 12:40:32,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7954 states. [2021-11-23 12:40:32,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7954 to 1484. [2021-11-23 12:40:32,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1096 states have (on average 1.7527372262773722) internal successors, (1921), 1483 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:32,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 1921 transitions. [2021-11-23 12:40:32,400 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 1921 transitions. Word has length 86 [2021-11-23 12:40:32,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:32,400 INFO L470 AbstractCegarLoop]: Abstraction has 1484 states and 1921 transitions. [2021-11-23 12:40:32,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:32,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 1921 transitions. [2021-11-23 12:40:32,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-23 12:40:32,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:32,402 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:32,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-23 12:40:32,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:40:32,617 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:40:32,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:32,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1483750797, now seen corresponding path program 3 times [2021-11-23 12:40:32,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:40:32,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918117273] [2021-11-23 12:40:32,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:40:32,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:40:32,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:40:32,619 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:40:32,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-23 12:40:33,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-23 12:40:33,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:40:33,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 12:40:33,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:40:34,009 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:34,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:40:35,320 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:35,320 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:40:35,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918117273] [2021-11-23 12:40:35,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918117273] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:40:35,321 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:40:35,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-23 12:40:35,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156104440] [2021-11-23 12:40:35,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:40:35,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-23 12:40:35,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:40:35,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-23 12:40:35,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 12:40:35,324 INFO L87 Difference]: Start difference. First operand 1484 states and 1921 transitions. Second operand has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:47,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:47,496 INFO L93 Difference]: Finished difference Result 17220 states and 22544 transitions. [2021-11-23 12:40:47,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-23 12:40:47,499 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-23 12:40:47,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:47,531 INFO L225 Difference]: With dead ends: 17220 [2021-11-23 12:40:47,531 INFO L226 Difference]: Without dead ends: 17220 [2021-11-23 12:40:47,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1644, Invalid=4208, Unknown=0, NotChecked=0, Total=5852 [2021-11-23 12:40:47,534 INFO L933 BasicCegarLoop]: 10981 mSDtfsCounter, 31045 mSDsluCounter, 154606 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31045 SdHoareTripleChecker+Valid, 165587 SdHoareTripleChecker+Invalid, 1744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:47,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31045 Valid, 165587 Invalid, 1744 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [169 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-23 12:40:47,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17220 states. [2021-11-23 12:40:47,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17220 to 1524. [2021-11-23 12:40:47,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1136 states have (on average 1.744718309859155) internal successors, (1982), 1523 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:47,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 1982 transitions. [2021-11-23 12:40:47,663 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 1982 transitions. Word has length 94 [2021-11-23 12:40:47,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:47,663 INFO L470 AbstractCegarLoop]: Abstraction has 1524 states and 1982 transitions. [2021-11-23 12:40:47,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:47,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 1982 transitions. [2021-11-23 12:40:47,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-23 12:40:47,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:47,665 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:47,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-23 12:40:47,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:40:47,865 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:40:47,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:47,866 INFO L85 PathProgramCache]: Analyzing trace with hash -193439117, now seen corresponding path program 4 times [2021-11-23 12:40:47,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:40:47,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541388268] [2021-11-23 12:40:47,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 12:40:47,867 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:40:47,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:40:47,867 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:40:47,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-23 12:40:48,149 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 12:40:48,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:40:48,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-23 12:40:48,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:40:49,257 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:49,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:40:51,867 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:51,867 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:40:51,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541388268] [2021-11-23 12:40:51,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541388268] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:40:51,868 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:40:51,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-23 12:40:51,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356855945] [2021-11-23 12:40:51,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:40:51,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-23 12:40:51,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:40:51,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-23 12:40:51,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-23 12:40:51,871 INFO L87 Difference]: Start difference. First operand 1524 states and 1982 transitions. Second operand has 66 states, 66 states have (on average 2.1818181818181817) internal successors, (144), 66 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:42:17,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:42:17,401 INFO L93 Difference]: Finished difference Result 2373 states and 3018 transitions. [2021-11-23 12:42:17,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-11-23 12:42:17,402 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.1818181818181817) internal successors, (144), 66 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-23 12:42:17,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:42:17,405 INFO L225 Difference]: With dead ends: 2373 [2021-11-23 12:42:17,405 INFO L226 Difference]: Without dead ends: 2373 [2021-11-23 12:42:17,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3304 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=3577, Invalid=8413, Unknown=0, NotChecked=0, Total=11990 [2021-11-23 12:42:17,410 INFO L933 BasicCegarLoop]: 1042 mSDtfsCounter, 808 mSDsluCounter, 33648 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 34690 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:42:17,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 34690 Invalid, 1930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 60.1s Time] [2021-11-23 12:42:17,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2021-11-23 12:42:17,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 1554. [2021-11-23 12:42:17,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1166 states have (on average 1.7169811320754718) internal successors, (2002), 1553 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:42:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2002 transitions. [2021-11-23 12:42:17,435 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2002 transitions. Word has length 110 [2021-11-23 12:42:17,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:42:17,436 INFO L470 AbstractCegarLoop]: Abstraction has 1554 states and 2002 transitions. [2021-11-23 12:42:17,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.1818181818181817) internal successors, (144), 66 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:42:17,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2002 transitions. [2021-11-23 12:42:17,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 12:42:17,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:17,438 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:42:17,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-23 12:42:17,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:42:17,654 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:42:17,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:17,655 INFO L85 PathProgramCache]: Analyzing trace with hash -684949645, now seen corresponding path program 5 times [2021-11-23 12:42:17,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:42:17,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630541771] [2021-11-23 12:42:17,656 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 12:42:17,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:42:17,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:42:17,658 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:42:17,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba2a73-e1a3-4200-9dca-081f2735d779/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-23 12:42:18,897 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-23 12:42:18,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:42:18,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-23 12:42:18,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:42:18,946 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 [2021-11-23 12:42:19,164 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 12:42:19,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-23 12:42:19,257 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 [2021-11-23 12:42:19,632 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-23 12:42:19,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 49 treesize of output 36 [2021-11-23 12:42:22,287 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:22,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:23,553 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:23,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:23,673 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:23,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:23,788 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:23,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:23,916 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:23,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-23 12:42:25,268 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:25,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:42:28,804 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:28,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:30,141 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:30,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:31,184 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:31,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:31,318 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:31,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:42:31,476 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:31,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:42:31,647 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:31,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:33,670 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:33,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:33,782 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:33,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:35,430 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:35,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 62 treesize of output 52 [2021-11-23 12:42:38,694 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:38,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:44,518 WARN L227 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 38 DAG size of output: 18 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 12:42:44,518 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:44,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:42:44,670 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:44,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:42:44,813 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:44,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-23 12:42:44,938 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:44,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:46,119 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:46,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-23 12:42:47,016 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:47,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-23 12:42:47,148 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:47,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-23 12:42:47,299 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:47,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:47,413 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:47,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:42:49,884 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:49,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:51,822 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:51,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:42:51,956 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:51,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:52,636 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:52,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:42:52,771 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:52,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:42:52,920 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:52,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:53,059 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:53,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:55,888 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:55,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-23 12:42:56,054 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:56,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:56,236 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:56,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:59,305 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:59,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:59,460 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:59,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:42:59,589 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:59,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:42:59,712 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:42:59,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:43:01,378 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:43:01,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:43:02,572 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:43:02,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:43:02,697 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:43:02,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:43:02,828 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:43:02,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 49 [2021-11-23 12:43:03,065 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-23 12:43:03,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 54 [2021-11-23 12:43:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 43 proven. 44 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2021-11-23 12:43:03,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:43:05,184 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))))) is different from false [2021-11-23 12:43:23,494 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1_173| (_ BitVec 32)) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1_171| (_ BitVec 32)) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1_175| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1_175| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1_173| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1_171| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))))))))) (_ bv1 1)))) is different from false