./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:07:40,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:07:40,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:07:40,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:07:40,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:07:40,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:07:40,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:07:40,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:07:40,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:07:40,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:07:40,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:07:40,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:07:40,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:07:40,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:07:40,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:07:40,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:07:40,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:07:40,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:07:40,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:07:40,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:07:40,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:07:40,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:07:40,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:07:40,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:07:40,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:07:40,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:07:40,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:07:40,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:07:40,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:07:40,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:07:40,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:07:40,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:07:40,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:07:40,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:07:40,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:07:40,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:07:40,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:07:40,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:07:40,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:07:40,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:07:40,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:07:40,856 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 02:07:40,914 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:07:40,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:07:40,916 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:07:40,924 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:07:40,925 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:07:40,925 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:07:40,925 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:07:40,926 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:07:40,926 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:07:40,926 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:07:40,928 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:07:40,928 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:07:40,928 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:07:40,929 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:07:40,929 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:07:40,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 02:07:40,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 02:07:40,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:07:40,931 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:07:40,931 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 02:07:40,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:07:40,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:07:40,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:07:40,932 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 02:07:40,933 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 02:07:40,933 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 02:07:40,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:07:40,936 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:07:40,936 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:07:40,937 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:07:40,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:07:40,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:07:40,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:07:40,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:07:40,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:07:40,939 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:07:40,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:07:40,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:07:40,940 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:07:40,940 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 [2021-11-07 02:07:41,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:07:41,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:07:41,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:07:41,414 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:07:41,416 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:07:41,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2021-11-07 02:07:41,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/data/63c6d2734/c230d31a427348259c75af99dd88852a/FLAGb5b345296 [2021-11-07 02:07:42,346 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:07:42,347 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2021-11-07 02:07:42,379 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/data/63c6d2734/c230d31a427348259c75af99dd88852a/FLAGb5b345296 [2021-11-07 02:07:42,527 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/data/63c6d2734/c230d31a427348259c75af99dd88852a [2021-11-07 02:07:42,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:07:42,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:07:42,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:07:42,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:07:42,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:07:42,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:07:42" (1/1) ... [2021-11-07 02:07:42,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cf4c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:42, skipping insertion in model container [2021-11-07 02:07:42,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:07:42" (1/1) ... [2021-11-07 02:07:42,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:07:42,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:07:43,199 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i[33021,33034] [2021-11-07 02:07:43,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:07:43,360 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) [2021-11-07 02:07:43,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@12237d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:43, skipping insertion in model container [2021-11-07 02:07:43,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:07:43,361 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:07:43,364 INFO L168 Benchmark]: Toolchain (without parser) took 830.58 ms. Allocated memory is still 102.8 MB. Free memory was 79.5 MB in the beginning and 70.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:07:43,365 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 77.6 MB. Free memory was 56.2 MB in the beginning and 56.1 MB in the end (delta: 35.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:07:43,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 827.39 ms. Allocated memory is still 102.8 MB. Free memory was 79.2 MB in the beginning and 70.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:07:43,369 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 77.6 MB. Free memory was 56.2 MB in the beginning and 56.1 MB in the end (delta: 35.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 827.39 ms. Allocated memory is still 102.8 MB. Free memory was 79.2 MB in the beginning and 70.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:07:46,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:07:46,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:07:46,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:07:46,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:07:46,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:07:46,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:07:46,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:07:46,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:07:46,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:07:46,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:07:46,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:07:46,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:07:46,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:07:46,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:07:46,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:07:46,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:07:46,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:07:46,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:07:46,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:07:46,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:07:46,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:07:46,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:07:46,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:07:46,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:07:46,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:07:46,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:07:46,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:07:46,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:07:46,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:07:46,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:07:46,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:07:46,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:07:46,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:07:46,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:07:46,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:07:46,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:07:46,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:07:46,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:07:46,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:07:46,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:07:46,361 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-07 02:07:46,422 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:07:46,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:07:46,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:07:46,424 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:07:46,425 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:07:46,425 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:07:46,425 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:07:46,426 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:07:46,426 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:07:46,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 02:07:46,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 02:07:46,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:07:46,430 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:07:46,430 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 02:07:46,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:07:46,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:07:46,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:07:46,432 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 02:07:46,432 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 02:07:46,432 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 02:07:46,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:07:46,433 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:07:46,433 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:07:46,433 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:07:46,434 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:07:46,434 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:07:46,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:07:46,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:07:46,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:07:46,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:07:46,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:07:46,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:07:46,437 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:07:46,437 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:07:46,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:07:46,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:07:46,438 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_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 [2021-11-07 02:07:46,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:07:46,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:07:46,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:07:46,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:07:46,985 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:07:46,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2021-11-07 02:07:47,063 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/data/fbc5016d4/557ff6ba5648492298f0fbc8338bfba0/FLAG798794631 [2021-11-07 02:07:47,938 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:07:47,939 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2021-11-07 02:07:47,959 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/data/fbc5016d4/557ff6ba5648492298f0fbc8338bfba0/FLAG798794631 [2021-11-07 02:07:48,115 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/data/fbc5016d4/557ff6ba5648492298f0fbc8338bfba0 [2021-11-07 02:07:48,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:07:48,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:07:48,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:07:48,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:07:48,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:07:48,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:07:48" (1/1) ... [2021-11-07 02:07:48,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@223998f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:48, skipping insertion in model container [2021-11-07 02:07:48,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:07:48" (1/1) ... [2021-11-07 02:07:48,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:07:48,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:07:48,756 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i[33021,33034] [2021-11-07 02:07:48,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:07:48,975 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:07:49,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:07:49,049 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i[33021,33034] [2021-11-07 02:07:49,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:07:49,140 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:07:49,200 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i[33021,33034] [2021-11-07 02:07:49,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:07:49,344 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:07:49,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:49 WrapperNode [2021-11-07 02:07:49,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:07:49,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:07:49,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:07:49,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:07:49,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:49" (1/1) ... [2021-11-07 02:07:49,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:49" (1/1) ... [2021-11-07 02:07:49,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:07:49,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:07:49,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:07:49,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:07:49,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:49" (1/1) ... [2021-11-07 02:07:49,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:49" (1/1) ... [2021-11-07 02:07:49,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:49" (1/1) ... [2021-11-07 02:07:49,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:49" (1/1) ... [2021-11-07 02:07:49,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:49" (1/1) ... [2021-11-07 02:07:49,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:49" (1/1) ... [2021-11-07 02:07:49,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:49" (1/1) ... [2021-11-07 02:07:49,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:07:49,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:07:49,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:07:49,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:07:49,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:49" (1/1) ... [2021-11-07 02:07:49,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:07:49,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:07:49,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:07:49,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:07:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:07:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:07:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:07:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:07:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:07:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:07:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:07:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:07:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:07:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:07:49,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:07:55,389 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:07:55,399 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-07 02:07:55,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:07:55 BoogieIcfgContainer [2021-11-07 02:07:55,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:07:55,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:07:55,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:07:55,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:07:55,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:07:48" (1/3) ... [2021-11-07 02:07:55,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51547ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:07:55, skipping insertion in model container [2021-11-07 02:07:55,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:49" (2/3) ... [2021-11-07 02:07:55,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51547ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:07:55, skipping insertion in model container [2021-11-07 02:07:55,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:07:55" (3/3) ... [2021-11-07 02:07:55,420 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test1-2.i [2021-11-07 02:07:55,427 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:07:55,428 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 444 error locations. [2021-11-07 02:07:55,490 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:07:55,499 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 [2021-11-07 02:07:55,499 INFO L340 AbstractCegarLoop]: Starting to check reachability of 444 error locations. [2021-11-07 02:07:55,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 885 states, 440 states have (on average 2.2454545454545456) internal successors, (988), 884 states have internal predecessors, (988), 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) [2021-11-07 02:07:55,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 02:07:55,568 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:55,569 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 02:07:55,569 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-07 02:07:55,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:55,582 INFO L85 PathProgramCache]: Analyzing trace with hash 28698764, now seen corresponding path program 1 times [2021-11-07 02:07:55,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:55,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974509008] [2021-11-07 02:07:55,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:55,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:55,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:55,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:55,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:07:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:55,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:07:55,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:55,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:55,854 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:55,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974509008] [2021-11-07 02:07:55,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974509008] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:55,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:55,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:07:55,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656580919] [2021-11-07 02:07:55,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:07:55,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:55,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:07:55,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:07:55,886 INFO L87 Difference]: Start difference. First operand has 885 states, 440 states have (on average 2.2454545454545456) internal successors, (988), 884 states have internal predecessors, (988), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-11-07 02:07:55,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:55,951 INFO L93 Difference]: Finished difference Result 876 states and 925 transitions. [2021-11-07 02:07:55,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:07:55,953 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 5 [2021-11-07 02:07:55,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:55,981 INFO L225 Difference]: With dead ends: 876 [2021-11-07 02:07:55,981 INFO L226 Difference]: Without dead ends: 874 [2021-11-07 02:07:55,983 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:07:56,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-11-07 02:07:56,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 874. [2021-11-07 02:07:56,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 435 states have (on average 2.12183908045977) internal successors, (923), 873 states have internal predecessors, (923), 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) [2021-11-07 02:07:56,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 923 transitions. [2021-11-07 02:07:56,119 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 923 transitions. Word has length 5 [2021-11-07 02:07:56,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:56,120 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 923 transitions. [2021-11-07 02:07:56,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-11-07 02:07:56,121 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 923 transitions. [2021-11-07 02:07:56,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 02:07:56,122 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:56,122 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 02:07:56,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:56,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:56,329 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-07 02:07:56,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:56,330 INFO L85 PathProgramCache]: Analyzing trace with hash 28698826, now seen corresponding path program 1 times [2021-11-07 02:07:56,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:56,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595247654] [2021-11-07 02:07:56,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:56,332 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:56,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:56,336 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:56,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:07:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:56,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:07:56,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:56,577 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 [2021-11-07 02:07:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:56,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:56,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:56,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:56,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595247654] [2021-11-07 02:07:56,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595247654] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:56,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:56,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:07:56,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157678585] [2021-11-07 02:07:56,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:07:56,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:56,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:07:56,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:07:56,644 INFO L87 Difference]: Start difference. First operand 874 states and 923 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-11-07 02:07:58,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:58,860 INFO L93 Difference]: Finished difference Result 832 states and 882 transitions. [2021-11-07 02:07:58,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:07:58,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 5 [2021-11-07 02:07:58,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:58,874 INFO L225 Difference]: With dead ends: 832 [2021-11-07 02:07:58,874 INFO L226 Difference]: Without dead ends: 832 [2021-11-07 02:07:58,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:07:58,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2021-11-07 02:07:58,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 825. [2021-11-07 02:07:58,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 435 states have (on average 2.0091954022988507) internal successors, (874), 824 states have internal predecessors, (874), 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) [2021-11-07 02:07:58,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 874 transitions. [2021-11-07 02:07:58,904 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 874 transitions. Word has length 5 [2021-11-07 02:07:58,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:58,904 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 874 transitions. [2021-11-07 02:07:58,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-11-07 02:07:58,905 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 874 transitions. [2021-11-07 02:07:58,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 02:07:58,906 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:58,906 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 02:07:58,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:59,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:59,114 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-07 02:07:59,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:59,115 INFO L85 PathProgramCache]: Analyzing trace with hash 28698827, now seen corresponding path program 1 times [2021-11-07 02:07:59,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:59,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181804105] [2021-11-07 02:07:59,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:59,117 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:59,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:59,118 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:59,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:07:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:59,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:07:59,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:59,311 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 [2021-11-07 02:07:59,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:59,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:59,463 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:59,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181804105] [2021-11-07 02:07:59,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181804105] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:59,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:59,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 02:07:59,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403139106] [2021-11-07 02:07:59,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:07:59,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:59,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:07:59,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:59,467 INFO L87 Difference]: Start difference. First operand 825 states and 874 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-07 02:08:04,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:04,020 INFO L93 Difference]: Finished difference Result 898 states and 951 transitions. [2021-11-07 02:08:04,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:04,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 5 [2021-11-07 02:08:04,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:04,028 INFO L225 Difference]: With dead ends: 898 [2021-11-07 02:08:04,028 INFO L226 Difference]: Without dead ends: 898 [2021-11-07 02:08:04,029 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:04,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2021-11-07 02:08:04,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 847. [2021-11-07 02:08:04,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 467 states have (on average 1.9914346895074946) internal successors, (930), 846 states have internal predecessors, (930), 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) [2021-11-07 02:08:04,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 930 transitions. [2021-11-07 02:08:04,092 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 930 transitions. Word has length 5 [2021-11-07 02:08:04,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:04,093 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 930 transitions. [2021-11-07 02:08:04,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-07 02:08:04,094 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 930 transitions. [2021-11-07 02:08:04,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 02:08:04,095 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:04,095 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 02:08:04,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:04,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:04,309 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-07 02:08:04,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:04,310 INFO L85 PathProgramCache]: Analyzing trace with hash 890510813, now seen corresponding path program 1 times [2021-11-07 02:08:04,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:04,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276281978] [2021-11-07 02:08:04,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:04,311 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:04,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:04,313 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:04,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:08:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:04,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:08:04,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:04,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:04,497 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:04,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276281978] [2021-11-07 02:08:04,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276281978] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:04,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:04,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:08:04,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628220075] [2021-11-07 02:08:04,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:04,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:04,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:04,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:04,502 INFO L87 Difference]: Start difference. First operand 847 states and 930 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-07 02:08:04,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:04,629 INFO L93 Difference]: Finished difference Result 1438 states and 1582 transitions. [2021-11-07 02:08:04,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:04,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 6 [2021-11-07 02:08:04,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:04,641 INFO L225 Difference]: With dead ends: 1438 [2021-11-07 02:08:04,641 INFO L226 Difference]: Without dead ends: 1438 [2021-11-07 02:08:04,642 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:04,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2021-11-07 02:08:04,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1178. [2021-11-07 02:08:04,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 798 states have (on average 1.9824561403508771) internal successors, (1582), 1177 states have internal predecessors, (1582), 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) [2021-11-07 02:08:04,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1582 transitions. [2021-11-07 02:08:04,687 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1582 transitions. Word has length 6 [2021-11-07 02:08:04,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:04,688 INFO L470 AbstractCegarLoop]: Abstraction has 1178 states and 1582 transitions. [2021-11-07 02:08:04,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-07 02:08:04,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1582 transitions. [2021-11-07 02:08:04,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 02:08:04,689 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:04,690 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:04,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:04,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:04,904 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-07 02:08:04,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:04,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2013913556, now seen corresponding path program 1 times [2021-11-07 02:08:04,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:04,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608534146] [2021-11-07 02:08:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:04,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:04,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:04,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:04,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:08:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:05,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:08:05,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:05,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:05,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:05,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:05,176 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:05,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608534146] [2021-11-07 02:08:05,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608534146] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:05,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:05,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:08:05,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340663305] [2021-11-07 02:08:05,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:05,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:05,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:05,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:05,179 INFO L87 Difference]: Start difference. First operand 1178 states and 1582 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-07 02:08:05,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:05,227 INFO L93 Difference]: Finished difference Result 1118 states and 1496 transitions. [2021-11-07 02:08:05,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:08:05,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 [2021-11-07 02:08:05,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:05,237 INFO L225 Difference]: With dead ends: 1118 [2021-11-07 02:08:05,238 INFO L226 Difference]: Without dead ends: 1118 [2021-11-07 02:08:05,238 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:05,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2021-11-07 02:08:05,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1118. [2021-11-07 02:08:05,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 762 states have (on average 1.963254593175853) internal successors, (1496), 1117 states have internal predecessors, (1496), 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) [2021-11-07 02:08:05,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1496 transitions. [2021-11-07 02:08:05,304 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1496 transitions. Word has length 11 [2021-11-07 02:08:05,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:05,305 INFO L470 AbstractCegarLoop]: Abstraction has 1118 states and 1496 transitions. [2021-11-07 02:08:05,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-07 02:08:05,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1496 transitions. [2021-11-07 02:08:05,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 02:08:05,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:05,306 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:05,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:05,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:05,523 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-07 02:08:05,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:05,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1659327634, now seen corresponding path program 1 times [2021-11-07 02:08:05,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:05,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714216614] [2021-11-07 02:08:05,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:05,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:05,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:05,526 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:05,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:08:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:05,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:08:05,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:05,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:05,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:05,842 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:05,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714216614] [2021-11-07 02:08:05,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714216614] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:05,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:05,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 02:08:05,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960489611] [2021-11-07 02:08:05,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:08:05,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:05,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:08:05,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:08:05,848 INFO L87 Difference]: Start difference. First operand 1118 states and 1496 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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) [2021-11-07 02:08:05,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:05,962 INFO L93 Difference]: Finished difference Result 1090 states and 1440 transitions. [2021-11-07 02:08:05,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:05,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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 [2021-11-07 02:08:05,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:05,971 INFO L225 Difference]: With dead ends: 1090 [2021-11-07 02:08:05,971 INFO L226 Difference]: Without dead ends: 1090 [2021-11-07 02:08:05,972 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:08:05,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2021-11-07 02:08:05,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1088. [2021-11-07 02:08:06,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 746 states have (on average 1.9276139410187667) internal successors, (1438), 1087 states have internal predecessors, (1438), 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) [2021-11-07 02:08:06,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1438 transitions. [2021-11-07 02:08:06,010 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1438 transitions. Word has length 13 [2021-11-07 02:08:06,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:06,012 INFO L470 AbstractCegarLoop]: Abstraction has 1088 states and 1438 transitions. [2021-11-07 02:08:06,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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) [2021-11-07 02:08:06,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1438 transitions. [2021-11-07 02:08:06,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 02:08:06,014 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:06,015 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:06,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:06,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:06,229 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-07 02:08:06,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:06,230 INFO L85 PathProgramCache]: Analyzing trace with hash 913198236, now seen corresponding path program 1 times [2021-11-07 02:08:06,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:06,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541246157] [2021-11-07 02:08:06,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:06,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:06,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:06,232 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:06,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:08:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:06,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:08:06,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:06,435 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 [2021-11-07 02:08:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:06,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:06,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:06,740 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:06,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541246157] [2021-11-07 02:08:06,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541246157] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:06,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:06,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:08:06,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339631888] [2021-11-07 02:08:06,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:06,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:06,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:06,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:06,743 INFO L87 Difference]: Start difference. First operand 1088 states and 1438 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-07 02:08:09,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:09,475 INFO L93 Difference]: Finished difference Result 1341 states and 1708 transitions. [2021-11-07 02:08:09,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:08:09,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2021-11-07 02:08:09,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:09,486 INFO L225 Difference]: With dead ends: 1341 [2021-11-07 02:08:09,487 INFO L226 Difference]: Without dead ends: 1341 [2021-11-07 02:08:09,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:08:09,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-11-07 02:08:09,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1084. [2021-11-07 02:08:09,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 746 states have (on average 1.9168900804289544) internal successors, (1430), 1083 states have internal predecessors, (1430), 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) [2021-11-07 02:08:09,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1430 transitions. [2021-11-07 02:08:09,529 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1430 transitions. Word has length 27 [2021-11-07 02:08:09,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:09,530 INFO L470 AbstractCegarLoop]: Abstraction has 1084 states and 1430 transitions. [2021-11-07 02:08:09,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-07 02:08:09,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1430 transitions. [2021-11-07 02:08:09,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 02:08:09,533 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:09,535 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:09,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:09,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:09,753 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-07 02:08:09,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:09,753 INFO L85 PathProgramCache]: Analyzing trace with hash 913198237, now seen corresponding path program 1 times [2021-11-07 02:08:09,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:09,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30873685] [2021-11-07 02:08:09,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:09,754 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:09,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:09,756 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:09,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:08:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:09,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:08:09,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:09,980 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 [2021-11-07 02:08:10,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:10,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:10,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:10,880 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:10,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30873685] [2021-11-07 02:08:10,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30873685] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:10,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:10,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 02:08:10,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089430780] [2021-11-07 02:08:10,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:08:10,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:10,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:08:10,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:08:10,883 INFO L87 Difference]: Start difference. First operand 1084 states and 1430 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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) [2021-11-07 02:08:17,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:17,706 INFO L93 Difference]: Finished difference Result 1404 states and 1743 transitions. [2021-11-07 02:08:17,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:08:17,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 27 [2021-11-07 02:08:17,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:17,717 INFO L225 Difference]: With dead ends: 1404 [2021-11-07 02:08:17,718 INFO L226 Difference]: Without dead ends: 1404 [2021-11-07 02:08:17,718 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:08:17,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-11-07 02:08:17,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1080. [2021-11-07 02:08:17,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 746 states have (on average 1.906166219839142) internal successors, (1422), 1079 states have internal predecessors, (1422), 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) [2021-11-07 02:08:17,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1422 transitions. [2021-11-07 02:08:17,755 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1422 transitions. Word has length 27 [2021-11-07 02:08:17,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:17,756 INFO L470 AbstractCegarLoop]: Abstraction has 1080 states and 1422 transitions. [2021-11-07 02:08:17,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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) [2021-11-07 02:08:17,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1422 transitions. [2021-11-07 02:08:17,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 02:08:17,758 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:17,758 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:17,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:17,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:17,972 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-07 02:08:17,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:17,973 INFO L85 PathProgramCache]: Analyzing trace with hash 944973104, now seen corresponding path program 1 times [2021-11-07 02:08:17,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:17,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122877649] [2021-11-07 02:08:17,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:17,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:17,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:17,977 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:18,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:08:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:18,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:08:18,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:18,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:18,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:18,630 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:18,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122877649] [2021-11-07 02:08:18,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122877649] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:18,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:18,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:08:18,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261637982] [2021-11-07 02:08:18,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:18,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:18,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:18,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:18,633 INFO L87 Difference]: Start difference. First operand 1080 states and 1422 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2021-11-07 02:08:18,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:18,710 INFO L93 Difference]: Finished difference Result 1068 states and 1402 transitions. [2021-11-07 02:08:18,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:18,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2021-11-07 02:08:18,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:18,719 INFO L225 Difference]: With dead ends: 1068 [2021-11-07 02:08:18,719 INFO L226 Difference]: Without dead ends: 1068 [2021-11-07 02:08:18,720 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:08:18,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-11-07 02:08:18,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1068. [2021-11-07 02:08:18,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 734 states have (on average 1.9100817438692097) internal successors, (1402), 1067 states have internal predecessors, (1402), 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) [2021-11-07 02:08:18,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1402 transitions. [2021-11-07 02:08:18,751 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1402 transitions. Word has length 42 [2021-11-07 02:08:18,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:18,752 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1402 transitions. [2021-11-07 02:08:18,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2021-11-07 02:08:18,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1402 transitions. [2021-11-07 02:08:18,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 02:08:18,754 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:18,754 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:18,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:18,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:18,968 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-07 02:08:18,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:18,969 INFO L85 PathProgramCache]: Analyzing trace with hash 29098340, now seen corresponding path program 1 times [2021-11-07 02:08:18,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:18,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541752290] [2021-11-07 02:08:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:18,970 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:18,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:18,971 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:18,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:08:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:19,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:08:19,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:19,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:19,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:20,344 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:20,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541752290] [2021-11-07 02:08:20,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541752290] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:20,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:20,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:08:20,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843227586] [2021-11-07 02:08:20,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:08:20,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:20,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:08:20,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:20,347 INFO L87 Difference]: Start difference. First operand 1068 states and 1402 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-11-07 02:08:20,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:20,637 INFO L93 Difference]: Finished difference Result 1213 states and 1501 transitions. [2021-11-07 02:08:20,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:08:20,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2021-11-07 02:08:20,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:20,646 INFO L225 Difference]: With dead ends: 1213 [2021-11-07 02:08:20,646 INFO L226 Difference]: Without dead ends: 1213 [2021-11-07 02:08:20,647 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:20,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2021-11-07 02:08:20,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1018. [2021-11-07 02:08:20,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 684 states have (on average 1.8961988304093567) internal successors, (1297), 1017 states have internal predecessors, (1297), 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) [2021-11-07 02:08:20,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1297 transitions. [2021-11-07 02:08:20,677 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1297 transitions. Word has length 50 [2021-11-07 02:08:20,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:20,677 INFO L470 AbstractCegarLoop]: Abstraction has 1018 states and 1297 transitions. [2021-11-07 02:08:20,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-11-07 02:08:20,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1297 transitions. [2021-11-07 02:08:20,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 02:08:20,680 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:20,680 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:20,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:20,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:20,896 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-07 02:08:20,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:20,896 INFO L85 PathProgramCache]: Analyzing trace with hash -839399161, now seen corresponding path program 1 times [2021-11-07 02:08:20,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:20,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960458751] [2021-11-07 02:08:20,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:20,898 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:20,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:20,899 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:20,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:08:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:21,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:08:21,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:21,414 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 [2021-11-07 02:08:21,423 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 [2021-11-07 02:08:22,377 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 02:08:22,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-07 02:08:22,388 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 02:08:22,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2021-11-07 02:08:22,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:22,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:28,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:28,259 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:28,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960458751] [2021-11-07 02:08:28,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960458751] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:28,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:28,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 02:08:28,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336113620] [2021-11-07 02:08:28,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:08:28,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:28,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:08:28,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-07 02:08:28,269 INFO L87 Difference]: Start difference. First operand 1018 states and 1297 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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) [2021-11-07 02:08:40,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:40,322 INFO L93 Difference]: Finished difference Result 993 states and 1235 transitions. [2021-11-07 02:08:40,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:08:40,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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 [2021-11-07 02:08:40,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:40,330 INFO L225 Difference]: With dead ends: 993 [2021-11-07 02:08:40,331 INFO L226 Difference]: Without dead ends: 993 [2021-11-07 02:08:40,331 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-07 02:08:40,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2021-11-07 02:08:40,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 948. [2021-11-07 02:08:40,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 652 states have (on average 1.771472392638037) internal successors, (1155), 947 states have internal predecessors, (1155), 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) [2021-11-07 02:08:40,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1155 transitions. [2021-11-07 02:08:40,358 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1155 transitions. Word has length 53 [2021-11-07 02:08:40,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:40,358 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 1155 transitions. [2021-11-07 02:08:40,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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) [2021-11-07 02:08:40,359 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1155 transitions. [2021-11-07 02:08:40,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 02:08:40,360 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:40,361 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:40,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:40,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:40,576 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-07 02:08:40,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:40,577 INFO L85 PathProgramCache]: Analyzing trace with hash -416260760, now seen corresponding path program 1 times [2021-11-07 02:08:40,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:40,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132423587] [2021-11-07 02:08:40,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:40,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:40,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:40,579 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:40,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:08:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:41,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:08:41,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:41,199 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 [2021-11-07 02:08:41,224 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 21 treesize of output 17 [2021-11-07 02:08:41,278 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 23 treesize of output 11 [2021-11-07 02:08:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:41,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:41,499 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:41,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132423587] [2021-11-07 02:08:41,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132423587] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:41,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:41,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:08:41,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96585179] [2021-11-07 02:08:41,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:08:41,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:41,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:08:41,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:08:41,502 INFO L87 Difference]: Start difference. First operand 948 states and 1155 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 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) [2021-11-07 02:08:47,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:47,002 INFO L93 Difference]: Finished difference Result 1400 states and 1637 transitions. [2021-11-07 02:08:47,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 02:08:47,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 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 59 [2021-11-07 02:08:47,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:47,011 INFO L225 Difference]: With dead ends: 1400 [2021-11-07 02:08:47,011 INFO L226 Difference]: Without dead ends: 1400 [2021-11-07 02:08:47,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:08:47,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-11-07 02:08:47,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 947. [2021-11-07 02:08:47,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 652 states have (on average 1.76840490797546) internal successors, (1153), 946 states have internal predecessors, (1153), 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) [2021-11-07 02:08:47,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1153 transitions. [2021-11-07 02:08:47,039 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1153 transitions. Word has length 59 [2021-11-07 02:08:47,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:47,040 INFO L470 AbstractCegarLoop]: Abstraction has 947 states and 1153 transitions. [2021-11-07 02:08:47,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 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) [2021-11-07 02:08:47,040 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1153 transitions. [2021-11-07 02:08:47,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 02:08:47,041 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:47,042 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:47,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:47,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:47,259 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-07 02:08:47,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:47,259 INFO L85 PathProgramCache]: Analyzing trace with hash -19181353, now seen corresponding path program 1 times [2021-11-07 02:08:47,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:47,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413309393] [2021-11-07 02:08:47,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:47,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:47,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:47,261 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:47,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:08:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:47,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:08:47,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:47,898 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 [2021-11-07 02:08:47,940 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 [2021-11-07 02:08:47,952 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 [2021-11-07 02:08:48,049 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 [2021-11-07 02:08:48,055 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 [2021-11-07 02:08:48,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:48,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:48,780 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:48,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413309393] [2021-11-07 02:08:48,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413309393] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:48,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:48,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 02:08:48,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418847876] [2021-11-07 02:08:48,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 02:08:48,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:48,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 02:08:48,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:08:48,783 INFO L87 Difference]: Start difference. First operand 947 states and 1153 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 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) [2021-11-07 02:09:07,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:07,042 INFO L93 Difference]: Finished difference Result 1287 states and 1521 transitions. [2021-11-07 02:09:07,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 02:09:07,044 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 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 60 [2021-11-07 02:09:07,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:07,050 INFO L225 Difference]: With dead ends: 1287 [2021-11-07 02:09:07,050 INFO L226 Difference]: Without dead ends: 1287 [2021-11-07 02:09:07,051 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-07 02:09:07,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-11-07 02:09:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 946. [2021-11-07 02:09:07,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 652 states have (on average 1.7653374233128833) internal successors, (1151), 945 states have internal predecessors, (1151), 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) [2021-11-07 02:09:07,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1151 transitions. [2021-11-07 02:09:07,078 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1151 transitions. Word has length 60 [2021-11-07 02:09:07,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:07,078 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 1151 transitions. [2021-11-07 02:09:07,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 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) [2021-11-07 02:09:07,079 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1151 transitions. [2021-11-07 02:09:07,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 02:09:07,080 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:07,080 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:07,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-07 02:09:07,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:07,303 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-07 02:09:07,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:07,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1927168386, now seen corresponding path program 1 times [2021-11-07 02:09:07,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:07,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136697445] [2021-11-07 02:09:07,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:07,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:07,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:07,306 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:07,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 02:09:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:07,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:09:07,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:08,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:08,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:08,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:08,220 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:08,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136697445] [2021-11-07 02:09:08,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136697445] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:08,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:08,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:09:08,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797597217] [2021-11-07 02:09:08,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:09:08,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:08,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:09:08,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:09:08,222 INFO L87 Difference]: Start difference. First operand 946 states and 1151 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-07 02:09:08,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:08,369 INFO L93 Difference]: Finished difference Result 1699 states and 2038 transitions. [2021-11-07 02:09:08,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:09:08,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 64 [2021-11-07 02:09:08,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:08,378 INFO L225 Difference]: With dead ends: 1699 [2021-11-07 02:09:08,379 INFO L226 Difference]: Without dead ends: 1699 [2021-11-07 02:09:08,379 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:09:08,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2021-11-07 02:09:08,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 952. [2021-11-07 02:09:08,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 658 states have (on average 1.7583586626139818) internal successors, (1157), 951 states have internal predecessors, (1157), 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) [2021-11-07 02:09:08,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1157 transitions. [2021-11-07 02:09:08,403 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1157 transitions. Word has length 64 [2021-11-07 02:09:08,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:08,403 INFO L470 AbstractCegarLoop]: Abstraction has 952 states and 1157 transitions. [2021-11-07 02:09:08,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-07 02:09:08,404 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1157 transitions. [2021-11-07 02:09:08,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 02:09:08,405 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:08,405 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:08,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-07 02:09:08,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:08,623 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-07 02:09:08,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:08,623 INFO L85 PathProgramCache]: Analyzing trace with hash -938951394, now seen corresponding path program 1 times [2021-11-07 02:09:08,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:08,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425205746] [2021-11-07 02:09:08,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:08,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:08,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:08,625 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:08,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:09:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:09,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:09:09,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:09,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:09,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:09,731 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:09,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425205746] [2021-11-07 02:09:09,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425205746] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:09,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [744425664] [2021-11-07 02:09:09,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:09,731 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:09,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:09:09,734 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:09:09,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 02:09:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:10,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:09:10,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:10,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:10,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:10,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [744425664] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:10,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116351815] [2021-11-07 02:09:10,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:10,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:09:10,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:09:10,977 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:09:10,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 02:09:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:11,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:09:11,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:11,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:12,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:12,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116351815] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:12,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:09:12,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 13 [2021-11-07 02:09:12,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294716289] [2021-11-07 02:09:12,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 02:09:12,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:12,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 02:09:12,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:09:12,311 INFO L87 Difference]: Start difference. First operand 952 states and 1157 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 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) [2021-11-07 02:09:13,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:13,604 INFO L93 Difference]: Finished difference Result 2460 states and 2933 transitions. [2021-11-07 02:09:13,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 02:09:13,605 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 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 [2021-11-07 02:09:13,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:13,616 INFO L225 Difference]: With dead ends: 2460 [2021-11-07 02:09:13,616 INFO L226 Difference]: Without dead ends: 2460 [2021-11-07 02:09:13,617 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=188, Invalid=364, Unknown=0, NotChecked=0, Total=552 [2021-11-07 02:09:13,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-11-07 02:09:13,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 970. [2021-11-07 02:09:13,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 676 states have (on average 1.7440828402366864) internal successors, (1179), 969 states have internal predecessors, (1179), 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) [2021-11-07 02:09:13,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1179 transitions. [2021-11-07 02:09:13,647 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1179 transitions. Word has length 66 [2021-11-07 02:09:13,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:13,648 INFO L470 AbstractCegarLoop]: Abstraction has 970 states and 1179 transitions. [2021-11-07 02:09:13,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 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) [2021-11-07 02:09:13,648 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1179 transitions. [2021-11-07 02:09:13,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 02:09:13,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:13,649 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:13,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:13,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-07 02:09:14,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:14,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:14,265 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-07 02:09:14,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:14,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1093747294, now seen corresponding path program 2 times [2021-11-07 02:09:14,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:14,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362743013] [2021-11-07 02:09:14,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:09:14,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:14,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:14,267 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:14,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 02:09:15,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:09:15,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:09:15,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 02:09:15,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:15,695 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:15,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:16,737 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:16,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362743013] [2021-11-07 02:09:16,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362743013] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:16,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [928508693] [2021-11-07 02:09:16,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:09:16,738 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:16,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:09:16,739 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:09:16,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-07 02:09:18,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:09:18,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:09:18,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 02:09:18,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:19,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:19,419 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:19,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [928508693] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:19,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882487153] [2021-11-07 02:09:19,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:09:19,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:09:19,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:09:19,421 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:09:19,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 02:09:37,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:09:37,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:09:37,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 02:09:37,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:37,743 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 02:09:37,744 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 15 treesize of output 15 [2021-11-07 02:09:37,828 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 18 treesize of output 14 [2021-11-07 02:09:38,286 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-07 02:09:38,286 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 33 treesize of output 26 [2021-11-07 02:09:38,559 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:09:38,559 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 42 treesize of output 38 [2021-11-07 02:09:38,856 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:09:38,857 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 42 treesize of output 38 [2021-11-07 02:09:40,762 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:09:40,763 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 42 treesize of output 38 [2021-11-07 02:09:41,042 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:09:41,043 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 42 treesize of output 38 [2021-11-07 02:09:42,715 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:09:42,715 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 67 treesize of output 48 [2021-11-07 02:09:43,079 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-07 02:09:43,080 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 66 treesize of output 27 [2021-11-07 02:09:43,187 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:09:43,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:50,222 INFO L354 Elim1Store]: treesize reduction 5, result has 88.6 percent of original size [2021-11-07 02:10:50,223 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 63 treesize of output 62 [2021-11-07 02:10:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 14 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:10:59,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882487153] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:10:59,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:10:59,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 13] total 38 [2021-11-07 02:10:59,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852897246] [2021-11-07 02:10:59,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-07 02:10:59,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:59,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-07 02:10:59,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1196, Unknown=29, NotChecked=0, Total=1406 [2021-11-07 02:10:59,397 INFO L87 Difference]: Start difference. First operand 970 states and 1179 transitions. Second operand has 38 states, 38 states have (on average 5.473684210526316) internal successors, (208), 38 states have internal predecessors, (208), 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) [2021-11-07 02:11:21,544 WARN L207 SmtUtils]: Spent 10.60 s on a formula simplification. DAG size of input: 108 DAG size of output: 81 [2021-11-07 02:11:41,761 WARN L207 SmtUtils]: Spent 17.69 s on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2021-11-07 02:14:13,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:13,899 INFO L93 Difference]: Finished difference Result 3329 states and 3996 transitions. [2021-11-07 02:14:13,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-07 02:14:13,900 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.473684210526316) internal successors, (208), 38 states have internal predecessors, (208), 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 70 [2021-11-07 02:14:13,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:13,917 INFO L225 Difference]: With dead ends: 3329 [2021-11-07 02:14:13,917 INFO L226 Difference]: Without dead ends: 3329 [2021-11-07 02:14:13,922 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 376 SyntacticMatches, 6 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3038 ImplicationChecksByTransitivity, 133.6s TimeCoverageRelationStatistics Valid=1881, Invalid=8185, Unknown=34, NotChecked=0, Total=10100 [2021-11-07 02:14:13,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3329 states. [2021-11-07 02:14:13,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3329 to 1001. [2021-11-07 02:14:13,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 708 states have (on average 1.7245762711864407) internal successors, (1221), 1000 states have internal predecessors, (1221), 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) [2021-11-07 02:14:13,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1221 transitions. [2021-11-07 02:14:13,956 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1221 transitions. Word has length 70 [2021-11-07 02:14:13,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:13,956 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1221 transitions. [2021-11-07 02:14:13,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.473684210526316) internal successors, (208), 38 states have internal predecessors, (208), 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) [2021-11-07 02:14:13,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1221 transitions. [2021-11-07 02:14:13,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 02:14:13,958 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:13,958 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:13,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:14,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:14,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-07 02:14:14,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:14:14,564 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-07 02:14:14,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:14,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1408996129, now seen corresponding path program 1 times [2021-11-07 02:14:14,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:14,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984348226] [2021-11-07 02:14:14,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:14,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:14,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:14,566 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:14,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 02:14:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:15,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 02:14:15,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:15,995 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:15,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:17,310 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:17,311 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:17,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984348226] [2021-11-07 02:14:17,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984348226] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:14:17,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1658614809] [2021-11-07 02:14:17,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:17,312 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:14:17,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:14:17,316 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:14:17,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-07 02:14:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:18,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 02:14:18,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:18,626 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:18,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:18,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1658614809] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:14:18,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373914658] [2021-11-07 02:14:18,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:18,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:14:18,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:14:18,877 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:14:18,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-07 02:14:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:19,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 02:14:19,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:20,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:23,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373914658] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:14:23,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:14:23,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 18, 18] total 49 [2021-11-07 02:14:23,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136860432] [2021-11-07 02:14:23,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-07 02:14:23,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:23,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-07 02:14:23,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=592, Invalid=1760, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 02:14:23,687 INFO L87 Difference]: Start difference. First operand 1001 states and 1221 transitions. Second operand has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 49 states have internal predecessors, (113), 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) [2021-11-07 02:14:53,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:53,217 INFO L93 Difference]: Finished difference Result 9711 states and 11417 transitions. [2021-11-07 02:14:53,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-11-07 02:14:53,218 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 49 states have internal predecessors, (113), 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 78 [2021-11-07 02:14:53,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:53,252 INFO L225 Difference]: With dead ends: 9711 [2021-11-07 02:14:53,252 INFO L226 Difference]: Without dead ends: 9711 [2021-11-07 02:14:53,256 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2885 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=3007, Invalid=8335, Unknown=0, NotChecked=0, Total=11342 [2021-11-07 02:14:53,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9711 states. [2021-11-07 02:14:53,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9711 to 1065. [2021-11-07 02:14:53,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 772 states have (on average 1.6748704663212435) internal successors, (1293), 1064 states have internal predecessors, (1293), 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) [2021-11-07 02:14:53,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1293 transitions. [2021-11-07 02:14:53,332 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1293 transitions. Word has length 78 [2021-11-07 02:14:53,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:53,333 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 1293 transitions. [2021-11-07 02:14:53,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 49 states have internal predecessors, (113), 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) [2021-11-07 02:14:53,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1293 transitions. [2021-11-07 02:14:53,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 02:14:53,334 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:53,335 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:53,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:53,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2021-11-07 02:14:53,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-07 02:14:53,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:14:53,950 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-07 02:14:53,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:53,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2005712417, now seen corresponding path program 2 times [2021-11-07 02:14:53,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:53,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573808718] [2021-11-07 02:14:53,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:14:53,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:53,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:53,953 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:53,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-07 02:14:54,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:14:54,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:14:54,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-07 02:14:54,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:56,694 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:56,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:02,498 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:02,498 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:15:02,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573808718] [2021-11-07 02:15:02,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573808718] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:15:02,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1101293476] [2021-11-07 02:15:02,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:15:02,499 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:15:02,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:15:02,506 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:15:02,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-07 02:15:04,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:15:04,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:15:04,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-07 02:15:04,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:04,861 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:04,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:06,813 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:06,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1101293476] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:15:06,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055702322] [2021-11-07 02:15:06,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:15:06,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:15:06,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:15:06,824 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:15:06,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-07 02:15:19,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:15:19,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:15:19,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-07 02:15:19,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:19,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:26,173 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:26,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055702322] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:15:26,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:15:26,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34, 34, 34, 34] total 95 [2021-11-07 02:15:26,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187897241] [2021-11-07 02:15:26,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2021-11-07 02:15:26,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:15:26,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-11-07 02:15:26,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2105, Invalid=6825, Unknown=0, NotChecked=0, Total=8930 [2021-11-07 02:15:26,179 INFO L87 Difference]: Start difference. First operand 1065 states and 1293 transitions. Second operand has 95 states, 95 states have (on average 1.6631578947368422) internal successors, (158), 95 states have internal predecessors, (158), 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) [2021-11-07 02:16:20,137 WARN L207 SmtUtils]: Spent 5.48 s on a formula simplification. DAG size of input: 140 DAG size of output: 116 [2021-11-07 02:16:27,147 WARN L207 SmtUtils]: Spent 5.70 s on a formula simplification. DAG size of input: 140 DAG size of output: 116 [2021-11-07 02:16:51,426 WARN L207 SmtUtils]: Spent 5.21 s on a formula simplification. DAG size of input: 140 DAG size of output: 116 [2021-11-07 02:16:57,727 WARN L207 SmtUtils]: Spent 5.01 s on a formula simplification. DAG size of input: 140 DAG size of output: 116 [2021-11-07 02:17:22,273 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification. DAG size of input: 140 DAG size of output: 116 [2021-11-07 02:17:28,822 WARN L207 SmtUtils]: Spent 5.13 s on a formula simplification. DAG size of input: 140 DAG size of output: 116 [2021-11-07 02:17:35,632 WARN L207 SmtUtils]: Spent 5.37 s on a formula simplification. DAG size of input: 140 DAG size of output: 116 [2021-11-07 02:17:42,239 WARN L207 SmtUtils]: Spent 5.22 s on a formula simplification. DAG size of input: 140 DAG size of output: 116 [2021-11-07 02:17:49,028 WARN L207 SmtUtils]: Spent 5.49 s on a formula simplification. DAG size of input: 140 DAG size of output: 115 [2021-11-07 02:17:58,528 WARN L207 SmtUtils]: Spent 5.61 s on a formula simplification. DAG size of input: 146 DAG size of output: 121 [2021-11-07 02:18:06,004 WARN L207 SmtUtils]: Spent 5.67 s on a formula simplification. DAG size of input: 147 DAG size of output: 122 [2021-11-07 02:18:14,419 WARN L207 SmtUtils]: Spent 5.56 s on a formula simplification. DAG size of input: 145 DAG size of output: 120 [2021-11-07 02:18:35,028 WARN L207 SmtUtils]: Spent 5.57 s on a formula simplification. DAG size of input: 140 DAG size of output: 116 [2021-11-07 02:19:00,223 WARN L207 SmtUtils]: Spent 5.16 s on a formula simplification. DAG size of input: 140 DAG size of output: 116 [2021-11-07 02:19:06,618 WARN L207 SmtUtils]: Spent 5.18 s on a formula simplification. DAG size of input: 140 DAG size of output: 116 [2021-11-07 02:19:12,880 WARN L207 SmtUtils]: Spent 5.14 s on a formula simplification. DAG size of input: 140 DAG size of output: 116 [2021-11-07 02:19:39,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:19:39,643 INFO L93 Difference]: Finished difference Result 21305 states and 25685 transitions. [2021-11-07 02:19:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-11-07 02:19:39,648 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.6631578947368422) internal successors, (158), 95 states have internal predecessors, (158), 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 [2021-11-07 02:19:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:19:39,702 INFO L225 Difference]: With dead ends: 21305 [2021-11-07 02:19:39,702 INFO L226 Difference]: Without dead ends: 21305 [2021-11-07 02:19:39,715 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10799 ImplicationChecksByTransitivity, 204.1s TimeCoverageRelationStatistics Valid=7257, Invalid=26783, Unknown=0, NotChecked=0, Total=34040 [2021-11-07 02:19:39,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21305 states. [2021-11-07 02:19:39,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21305 to 1193. [2021-11-07 02:19:39,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 900 states have (on average 1.6477777777777778) internal successors, (1483), 1192 states have internal predecessors, (1483), 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) [2021-11-07 02:19:39,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1483 transitions. [2021-11-07 02:19:39,867 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1483 transitions. Word has length 94 [2021-11-07 02:19:39,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:19:39,868 INFO L470 AbstractCegarLoop]: Abstraction has 1193 states and 1483 transitions. [2021-11-07 02:19:39,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.6631578947368422) internal successors, (158), 95 states have internal predecessors, (158), 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) [2021-11-07 02:19:39,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1483 transitions. [2021-11-07 02:19:39,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 02:19:39,870 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:19:39,870 INFO L513 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:19:39,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:40,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:40,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:40,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:19:40,492 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-07 02:19:40,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:19:40,493 INFO L85 PathProgramCache]: Analyzing trace with hash -12810177, now seen corresponding path program 3 times [2021-11-07 02:19:40,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:19:40,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646638931] [2021-11-07 02:19:40,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:19:40,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:19:40,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:19:40,498 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:19:40,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8715eaa-ee39-4090-906e-d7c844f6dd77/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-07 02:19:44,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2021-11-07 02:19:44,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:19:44,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 100 conjunts are in the unsatisfiable core [2021-11-07 02:19:44,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:44,231 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 [2021-11-07 02:19:44,809 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 02:19:44,809 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 16 treesize of output 16 [2021-11-07 02:19:44,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-07 02:19:44,867 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 [2021-11-07 02:19:44,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-07 02:19:45,265 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-07 02:19:45,265 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 68 treesize of output 67 [2021-11-07 02:19:45,304 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-07 02:19:45,304 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 64 treesize of output 51 [2021-11-07 02:19:46,888 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:19:46,888 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 88 treesize of output 90 [2021-11-07 02:19:46,977 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:19:46,978 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 84 treesize of output 74 [2021-11-07 02:19:49,286 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:19:49,286 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 88 treesize of output 90 [2021-11-07 02:19:51,098 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:19:51,100 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 84 treesize of output 74 [2021-11-07 02:19:51,294 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:19:51,295 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 88 treesize of output 90 [2021-11-07 02:19:51,380 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:19:51,380 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 84 treesize of output 74 [2021-11-07 02:19:53,286 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:19:53,286 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 88 treesize of output 90 [2021-11-07 02:19:57,830 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:19:57,830 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 84 treesize of output 74 [2021-11-07 02:20:01,595 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:01,596 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 88 treesize of output 90 [2021-11-07 02:20:06,179 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:06,179 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 84 treesize of output 74 [2021-11-07 02:20:08,447 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:08,447 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 88 treesize of output 90 [2021-11-07 02:20:10,650 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:10,650 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 84 treesize of output 74 [2021-11-07 02:20:12,680 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:12,680 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 88 treesize of output 90 [2021-11-07 02:20:14,599 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:14,600 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 84 treesize of output 74 [2021-11-07 02:20:15,452 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:15,453 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 88 treesize of output 90 [2021-11-07 02:20:16,437 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:16,437 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 84 treesize of output 74 [2021-11-07 02:20:18,722 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:18,722 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 88 treesize of output 90 [2021-11-07 02:20:21,641 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:21,642 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 84 treesize of output 74 [2021-11-07 02:20:24,413 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:24,413 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 88 treesize of output 90 [2021-11-07 02:20:24,480 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:24,480 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 84 treesize of output 74 [2021-11-07 02:20:24,674 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:24,675 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 88 treesize of output 90 [2021-11-07 02:20:24,757 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:24,757 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 84 treesize of output 74 [2021-11-07 02:20:24,968 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:24,969 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 88 treesize of output 90 [2021-11-07 02:20:26,661 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:26,662 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 84 treesize of output 74 [2021-11-07 02:20:28,250 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:28,250 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 88 treesize of output 90 [2021-11-07 02:20:30,789 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:30,790 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 84 treesize of output 74 [2021-11-07 02:20:34,648 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:34,649 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 88 treesize of output 90 [2021-11-07 02:20:34,718 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:34,718 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 84 treesize of output 74 [2021-11-07 02:20:36,460 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:36,460 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 88 treesize of output 90 [2021-11-07 02:20:36,523 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:36,523 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 84 treesize of output 74 [2021-11-07 02:20:36,726 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:36,726 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 88 treesize of output 90 [2021-11-07 02:20:36,788 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:36,789 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 84 treesize of output 74 [2021-11-07 02:20:38,800 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:38,800 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 88 treesize of output 90 [2021-11-07 02:20:42,357 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:42,358 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 84 treesize of output 74 [2021-11-07 02:20:42,555 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:42,556 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 88 treesize of output 90 [2021-11-07 02:20:42,617 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:42,618 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 84 treesize of output 74 [2021-11-07 02:20:42,829 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:42,829 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 88 treesize of output 90 [2021-11-07 02:20:42,888 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:42,889 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 84 treesize of output 74 [2021-11-07 02:20:45,641 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:45,641 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 88 treesize of output 90 [2021-11-07 02:20:47,590 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:47,591 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 84 treesize of output 74 [2021-11-07 02:20:47,787 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:47,787 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 88 treesize of output 90 [2021-11-07 02:20:47,846 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:47,846 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 84 treesize of output 74 [2021-11-07 02:20:48,140 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:48,141 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 88 treesize of output 90 [2021-11-07 02:20:50,860 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:50,860 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 84 treesize of output 74 [2021-11-07 02:20:51,056 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:51,057 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 88 treesize of output 90 [2021-11-07 02:20:53,349 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:53,349 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 84 treesize of output 74 [2021-11-07 02:20:57,287 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:20:57,287 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 88 treesize of output 90 [2021-11-07 02:20:57,346 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:20:57,347 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 84 treesize of output 74 [2021-11-07 02:21:00,674 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:21:00,674 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 88 treesize of output 90 [2021-11-07 02:21:00,733 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:21:00,733 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 84 treesize of output 74 [2021-11-07 02:21:00,929 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:21:00,929 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 88 treesize of output 90 [2021-11-07 02:21:02,752 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:21:02,753 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 84 treesize of output 74 [2021-11-07 02:21:02,979 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:21:02,980 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 88 treesize of output 90 [2021-11-07 02:21:05,732 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:21:05,733 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 84 treesize of output 74 [2021-11-07 02:21:08,433 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:21:08,434 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 88 treesize of output 90 [2021-11-07 02:21:09,903 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:21:09,903 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 84 treesize of output 74 [2021-11-07 02:21:10,100 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:21:10,101 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 88 treesize of output 90 [2021-11-07 02:21:13,815 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:21:13,816 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 84 treesize of output 74 [2021-11-07 02:21:14,033 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:21:14,034 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 88 treesize of output 90