./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.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_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/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_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/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_77ef6722-e9aa-4fba-8f8d-6111c26c3812/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 a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:51:31,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:51:31,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:51:31,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:51:31,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:51:31,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:51:31,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:51:31,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:51:31,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:51:31,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:51:31,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:51:31,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:51:32,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:51:32,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:51:32,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:51:32,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:51:32,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:51:32,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:51:32,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:51:32,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:51:32,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:51:32,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:51:32,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:51:32,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:51:32,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:51:32,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:51:32,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:51:32,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:51:32,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:51:32,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:51:32,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:51:32,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:51:32,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:51:32,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:51:32,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:51:32,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:51:32,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:51:32,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:51:32,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:51:32,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:51:32,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:51:32,066 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 01:51:32,125 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:51:32,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:51:32,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:51:32,129 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:51:32,130 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:51:32,130 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:51:32,131 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:51:32,131 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:51:32,132 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:51:32,132 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:51:32,133 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:51:32,134 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:51:32,134 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:51:32,134 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:51:32,135 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:51:32,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:51:32,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:51:32,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:51:32,137 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:51:32,137 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:51:32,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:51:32,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:51:32,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:51:32,139 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:51:32,139 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:51:32,140 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:51:32,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:51:32,142 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:51:32,142 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:51:32,143 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:51:32,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:51:32,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:51:32,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:51:32,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:51:32,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:51:32,145 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:51:32,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:51:32,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:51:32,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:51:32,146 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_77ef6722-e9aa-4fba-8f8d-6111c26c3812/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 [2021-11-07 01:51:32,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:51:32,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:51:32,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:51:32,553 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:51:32,554 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:51:32,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2021-11-07 01:51:32,657 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/data/84111bebf/285e1dec72ba4c44ae3bb720eb77d80d/FLAG70398a6e8 [2021-11-07 01:51:33,433 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:51:33,434 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2021-11-07 01:51:33,470 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/data/84111bebf/285e1dec72ba4c44ae3bb720eb77d80d/FLAG70398a6e8 [2021-11-07 01:51:33,635 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/data/84111bebf/285e1dec72ba4c44ae3bb720eb77d80d [2021-11-07 01:51:33,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:51:33,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:51:33,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:51:33,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:51:33,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:51:33,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:51:33" (1/1) ... [2021-11-07 01:51:33,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d3cef6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:33, skipping insertion in model container [2021-11-07 01:51:33,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:51:33" (1/1) ... [2021-11-07 01:51:33,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:51:33,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:51:34,223 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_77ef6722-e9aa-4fba-8f8d-6111c26c3812/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i[33021,33034] [2021-11-07 01:51:34,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:51:34,428 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 01:51:34,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c2dd11b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:34, skipping insertion in model container [2021-11-07 01:51:34,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:51:34,431 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:51:34,435 INFO L168 Benchmark]: Toolchain (without parser) took 792.13 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 73.7 MB in the beginning and 94.6 MB in the end (delta: -20.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:51:34,437 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 104.9 MB. Free memory is still 59.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:51:34,440 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.77 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 73.5 MB in the beginning and 94.6 MB in the end (delta: -21.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:51:34,442 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 104.9 MB. Free memory is still 59.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 787.77 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 73.5 MB in the beginning and 94.6 MB in the end (delta: -21.2 MB). Peak memory consumption was 10.5 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_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/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_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/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_77ef6722-e9aa-4fba-8f8d-6111c26c3812/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 a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:51:37,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:51:37,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:51:37,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:51:37,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:51:37,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:51:37,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:51:37,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:51:37,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:51:37,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:51:37,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:51:37,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:51:37,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:51:37,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:51:37,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:51:37,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:51:37,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:51:37,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:51:37,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:51:37,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:51:37,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:51:37,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:51:37,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:51:37,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:51:37,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:51:37,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:51:37,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:51:37,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:51:37,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:51:37,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:51:37,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:51:37,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:51:37,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:51:37,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:51:37,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:51:37,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:51:37,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:51:37,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:51:37,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:51:37,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:51:37,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:51:37,490 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-07 01:51:37,522 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:51:37,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:51:37,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:51:37,524 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:51:37,525 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:51:37,525 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:51:37,525 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:51:37,529 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:51:37,529 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:51:37,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:51:37,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:51:37,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:51:37,531 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:51:37,531 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:51:37,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:51:37,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:51:37,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:51:37,534 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:51:37,535 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:51:37,535 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:51:37,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:51:37,536 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:51:37,536 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:51:37,536 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:51:37,537 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:51:37,537 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:51:37,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:51:37,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:51:37,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:51:37,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:51:37,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:51:37,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:51:37,540 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:51:37,540 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:51:37,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:51:37,541 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:51:37,541 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_77ef6722-e9aa-4fba-8f8d-6111c26c3812/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 [2021-11-07 01:51:38,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:51:38,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:51:38,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:51:38,145 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:51:38,146 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:51:38,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2021-11-07 01:51:38,232 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/data/427834da2/d924b1165c2348a6b681e2b58abdc03c/FLAGb01bba1a4 [2021-11-07 01:51:39,195 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:51:39,195 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2021-11-07 01:51:39,229 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/data/427834da2/d924b1165c2348a6b681e2b58abdc03c/FLAGb01bba1a4 [2021-11-07 01:51:39,307 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/data/427834da2/d924b1165c2348a6b681e2b58abdc03c [2021-11-07 01:51:39,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:51:39,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:51:39,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:51:39,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:51:39,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:51:39,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:51:39" (1/1) ... [2021-11-07 01:51:39,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c80d78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:39, skipping insertion in model container [2021-11-07 01:51:39,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:51:39" (1/1) ... [2021-11-07 01:51:39,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:51:39,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:51:39,964 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_77ef6722-e9aa-4fba-8f8d-6111c26c3812/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i[33021,33034] [2021-11-07 01:51:40,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:51:40,075 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:51:40,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:51:40,111 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_77ef6722-e9aa-4fba-8f8d-6111c26c3812/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i[33021,33034] [2021-11-07 01:51:40,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:51:40,183 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:51:40,260 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_77ef6722-e9aa-4fba-8f8d-6111c26c3812/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i[33021,33034] [2021-11-07 01:51:40,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:51:40,437 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:51:40,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:40 WrapperNode [2021-11-07 01:51:40,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:51:40,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:51:40,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:51:40,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:51:40,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:40" (1/1) ... [2021-11-07 01:51:40,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:40" (1/1) ... [2021-11-07 01:51:40,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:51:40,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:51:40,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:51:40,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:51:40,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:40" (1/1) ... [2021-11-07 01:51:40,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:40" (1/1) ... [2021-11-07 01:51:40,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:40" (1/1) ... [2021-11-07 01:51:40,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:40" (1/1) ... [2021-11-07 01:51:40,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:40" (1/1) ... [2021-11-07 01:51:40,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:40" (1/1) ... [2021-11-07 01:51:40,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:40" (1/1) ... [2021-11-07 01:51:40,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:51:40,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:51:40,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:51:40,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:51:40,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:40" (1/1) ... [2021-11-07 01:51:40,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:51:40,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:51:40,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:51:40,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:51:40,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:51:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:51:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:51:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:51:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:51:40,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:51:40,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:51:40,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:51:40,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:51:40,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:51:40,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:51:45,502 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:51:45,507 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-07 01:51:45,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:51:45 BoogieIcfgContainer [2021-11-07 01:51:45,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:51:45,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:51:45,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:51:45,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:51:45,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:51:39" (1/3) ... [2021-11-07 01:51:45,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207f5044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:51:45, skipping insertion in model container [2021-11-07 01:51:45,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:40" (2/3) ... [2021-11-07 01:51:45,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207f5044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:51:45, skipping insertion in model container [2021-11-07 01:51:45,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:51:45" (3/3) ... [2021-11-07 01:51:45,533 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test1-1.i [2021-11-07 01:51:45,540 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:51:45,541 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 339 error locations. [2021-11-07 01:51:45,610 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:51:45,627 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 01:51:45,627 INFO L340 AbstractCegarLoop]: Starting to check reachability of 339 error locations. [2021-11-07 01:51:45,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 686 states, 346 states have (on average 2.222543352601156) internal successors, (769), 685 states have internal predecessors, (769), 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 01:51:45,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 01:51:45,676 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:45,677 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 01:51:45,678 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-07 01:51:45,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:45,684 INFO L85 PathProgramCache]: Analyzing trace with hash 28698764, now seen corresponding path program 1 times [2021-11-07 01:51:45,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:45,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299353069] [2021-11-07 01:51:45,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:45,700 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:45,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:45,704 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:45,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:51:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:45,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:51:45,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:45,905 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 01:51:45,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:45,921 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 01:51:45,923 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:45,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299353069] [2021-11-07 01:51:45,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299353069] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:45,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:45,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:51:45,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180878416] [2021-11-07 01:51:45,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:51:45,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:45,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:51:45,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:51:45,985 INFO L87 Difference]: Start difference. First operand has 686 states, 346 states have (on average 2.222543352601156) internal successors, (769), 685 states have internal predecessors, (769), 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 01:51:46,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:46,079 INFO L93 Difference]: Finished difference Result 677 states and 715 transitions. [2021-11-07 01:51:46,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:51:46,081 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 01:51:46,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:46,107 INFO L225 Difference]: With dead ends: 677 [2021-11-07 01:51:46,107 INFO L226 Difference]: Without dead ends: 675 [2021-11-07 01:51:46,109 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 01:51:46,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-11-07 01:51:46,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2021-11-07 01:51:46,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 341 states have (on average 2.090909090909091) internal successors, (713), 674 states have internal predecessors, (713), 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 01:51:46,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 713 transitions. [2021-11-07 01:51:46,238 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 713 transitions. Word has length 5 [2021-11-07 01:51:46,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:46,238 INFO L470 AbstractCegarLoop]: Abstraction has 675 states and 713 transitions. [2021-11-07 01:51:46,239 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 01:51:46,239 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 713 transitions. [2021-11-07 01:51:46,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 01:51:46,240 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:46,240 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 01:51:46,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:46,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:51:46,452 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-07 01:51:46,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:46,453 INFO L85 PathProgramCache]: Analyzing trace with hash 28698826, now seen corresponding path program 1 times [2021-11-07 01:51:46,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:46,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735109372] [2021-11-07 01:51:46,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:46,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:46,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:46,461 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:46,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:51:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:46,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:51:46,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:46,649 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 01:51:46,666 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 01:51:46,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:46,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:46,691 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:46,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735109372] [2021-11-07 01:51:46,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735109372] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:46,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:46,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:51:46,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633119710] [2021-11-07 01:51:46,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:51:46,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:46,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:51:46,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:51:46,696 INFO L87 Difference]: Start difference. First operand 675 states and 713 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 01:51:48,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:48,565 INFO L93 Difference]: Finished difference Result 633 states and 672 transitions. [2021-11-07 01:51:48,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:51:48,569 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 01:51:48,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:48,576 INFO L225 Difference]: With dead ends: 633 [2021-11-07 01:51:48,576 INFO L226 Difference]: Without dead ends: 633 [2021-11-07 01:51:48,577 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 01:51:48,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-11-07 01:51:48,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 626. [2021-11-07 01:51:48,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 341 states have (on average 1.9472140762463344) internal successors, (664), 625 states have internal predecessors, (664), 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 01:51:48,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 664 transitions. [2021-11-07 01:51:48,669 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 664 transitions. Word has length 5 [2021-11-07 01:51:48,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:48,669 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 664 transitions. [2021-11-07 01:51:48,670 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 01:51:48,670 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 664 transitions. [2021-11-07 01:51:48,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 01:51:48,670 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:48,671 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 01:51:48,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:48,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:51:48,884 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-07 01:51:48,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:48,890 INFO L85 PathProgramCache]: Analyzing trace with hash 28698827, now seen corresponding path program 1 times [2021-11-07 01:51:48,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:48,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886930865] [2021-11-07 01:51:48,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:48,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:48,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:48,893 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:48,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:51:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:49,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:51:49,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:49,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:51:49,096 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 01:51:49,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:49,197 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:49,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886930865] [2021-11-07 01:51:49,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886930865] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:49,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:49,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:51:49,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916234317] [2021-11-07 01:51:49,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:51:49,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:49,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:51:49,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:51:49,201 INFO L87 Difference]: Start difference. First operand 626 states and 664 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 01:51:52,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:52,767 INFO L93 Difference]: Finished difference Result 699 states and 741 transitions. [2021-11-07 01:51:52,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:51:52,769 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 01:51:52,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:52,774 INFO L225 Difference]: With dead ends: 699 [2021-11-07 01:51:52,774 INFO L226 Difference]: Without dead ends: 699 [2021-11-07 01:51:52,775 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 01:51:52,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-11-07 01:51:52,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 648. [2021-11-07 01:51:52,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 373 states have (on average 1.9302949061662198) internal successors, (720), 647 states have internal predecessors, (720), 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 01:51:52,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 720 transitions. [2021-11-07 01:51:52,798 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 720 transitions. Word has length 5 [2021-11-07 01:51:52,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:52,799 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 720 transitions. [2021-11-07 01:51:52,799 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 01:51:52,799 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 720 transitions. [2021-11-07 01:51:52,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:51:52,800 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:52,800 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:51:52,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:53,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:51:53,014 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-07 01:51:53,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:53,015 INFO L85 PathProgramCache]: Analyzing trace with hash 890510813, now seen corresponding path program 1 times [2021-11-07 01:51:53,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:53,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823697735] [2021-11-07 01:51:53,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:53,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:53,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:53,029 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:53,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:51:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:53,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:51:53,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:53,171 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 01:51:53,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:53,204 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 01:51:53,204 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:53,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823697735] [2021-11-07 01:51:53,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823697735] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:53,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:53,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:51:53,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975616304] [2021-11-07 01:51:53,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:51:53,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:53,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:51:53,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:51:53,207 INFO L87 Difference]: Start difference. First operand 648 states and 720 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 01:51:53,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:53,308 INFO L93 Difference]: Finished difference Result 1239 states and 1372 transitions. [2021-11-07 01:51:53,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:51:53,309 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 01:51:53,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:53,316 INFO L225 Difference]: With dead ends: 1239 [2021-11-07 01:51:53,317 INFO L226 Difference]: Without dead ends: 1239 [2021-11-07 01:51:53,317 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 01:51:53,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-11-07 01:51:53,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 979. [2021-11-07 01:51:53,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 704 states have (on average 1.9488636363636365) internal successors, (1372), 978 states have internal predecessors, (1372), 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 01:51:53,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1372 transitions. [2021-11-07 01:51:53,362 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1372 transitions. Word has length 6 [2021-11-07 01:51:53,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:53,362 INFO L470 AbstractCegarLoop]: Abstraction has 979 states and 1372 transitions. [2021-11-07 01:51:53,362 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 01:51:53,363 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1372 transitions. [2021-11-07 01:51:53,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 01:51:53,363 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:53,363 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:51:53,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-07 01:51:53,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:51:53,574 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-07 01:51:53,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:53,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2013913556, now seen corresponding path program 1 times [2021-11-07 01:51:53,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:53,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709348376] [2021-11-07 01:51:53,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:53,576 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:53,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:53,577 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:53,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:51:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:53,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:51:53,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:53,735 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 01:51:53,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:53,770 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 01:51:53,770 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:53,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709348376] [2021-11-07 01:51:53,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709348376] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:53,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:53,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:51:53,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723650090] [2021-11-07 01:51:53,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:51:53,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:53,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:51:53,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:51:53,781 INFO L87 Difference]: Start difference. First operand 979 states and 1372 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 01:51:53,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:53,819 INFO L93 Difference]: Finished difference Result 919 states and 1286 transitions. [2021-11-07 01:51:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:51:53,820 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 01:51:53,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:53,826 INFO L225 Difference]: With dead ends: 919 [2021-11-07 01:51:53,826 INFO L226 Difference]: Without dead ends: 919 [2021-11-07 01:51:53,827 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 01:51:53,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2021-11-07 01:51:53,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 919. [2021-11-07 01:51:53,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 668 states have (on average 1.9251497005988023) internal successors, (1286), 918 states have internal predecessors, (1286), 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 01:51:53,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1286 transitions. [2021-11-07 01:51:53,856 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1286 transitions. Word has length 11 [2021-11-07 01:51:53,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:53,856 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 1286 transitions. [2021-11-07 01:51:53,857 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 01:51:53,857 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1286 transitions. [2021-11-07 01:51:53,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:51:53,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:53,858 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:51:53,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:54,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:51:54,070 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-07 01:51:54,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:54,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1659327634, now seen corresponding path program 1 times [2021-11-07 01:51:54,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:54,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459431528] [2021-11-07 01:51:54,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:54,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:54,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:54,073 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:54,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:51:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:54,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:51:54,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:54,261 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 01:51:54,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:54,310 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 01:51:54,311 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:54,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459431528] [2021-11-07 01:51:54,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459431528] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:54,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:54,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:51:54,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577536239] [2021-11-07 01:51:54,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:51:54,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:54,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:51:54,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:51:54,314 INFO L87 Difference]: Start difference. First operand 919 states and 1286 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 01:51:54,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:54,405 INFO L93 Difference]: Finished difference Result 891 states and 1230 transitions. [2021-11-07 01:51:54,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:51:54,406 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 01:51:54,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:54,412 INFO L225 Difference]: With dead ends: 891 [2021-11-07 01:51:54,413 INFO L226 Difference]: Without dead ends: 891 [2021-11-07 01:51:54,413 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 01:51:54,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2021-11-07 01:51:54,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 889. [2021-11-07 01:51:54,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 652 states have (on average 1.883435582822086) internal successors, (1228), 888 states have internal predecessors, (1228), 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 01:51:54,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1228 transitions. [2021-11-07 01:51:54,439 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1228 transitions. Word has length 13 [2021-11-07 01:51:54,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:54,440 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 1228 transitions. [2021-11-07 01:51:54,440 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 01:51:54,440 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1228 transitions. [2021-11-07 01:51:54,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 01:51:54,441 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:54,442 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 01:51:54,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:54,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:51:54,654 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-07 01:51:54,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:54,654 INFO L85 PathProgramCache]: Analyzing trace with hash 913198236, now seen corresponding path program 1 times [2021-11-07 01:51:54,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:54,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064722968] [2021-11-07 01:51:54,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:54,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:54,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:54,656 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:54,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:51:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:54,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:51:54,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:54,815 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 01:51:54,955 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 01:51:54,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:55,085 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 01:51:55,085 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:55,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064722968] [2021-11-07 01:51:55,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064722968] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:55,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:55,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:51:55,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200697765] [2021-11-07 01:51:55,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:51:55,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:55,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:51:55,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:51:55,088 INFO L87 Difference]: Start difference. First operand 889 states and 1228 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 01:51:56,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:56,681 INFO L93 Difference]: Finished difference Result 959 states and 1305 transitions. [2021-11-07 01:51:56,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:51:56,682 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 01:51:56,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:56,689 INFO L225 Difference]: With dead ends: 959 [2021-11-07 01:51:56,690 INFO L226 Difference]: Without dead ends: 959 [2021-11-07 01:51:56,690 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 01:51:56,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-11-07 01:51:56,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 885. [2021-11-07 01:51:56,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 652 states have (on average 1.8711656441717792) internal successors, (1220), 884 states have internal predecessors, (1220), 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 01:51:56,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1220 transitions. [2021-11-07 01:51:56,722 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1220 transitions. Word has length 27 [2021-11-07 01:51:56,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:56,723 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1220 transitions. [2021-11-07 01:51:56,723 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 01:51:56,724 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1220 transitions. [2021-11-07 01:51:56,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 01:51:56,727 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:56,727 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 01:51:56,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:56,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:51:56,938 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-07 01:51:56,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:56,938 INFO L85 PathProgramCache]: Analyzing trace with hash 913198237, now seen corresponding path program 1 times [2021-11-07 01:51:56,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:56,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927063141] [2021-11-07 01:51:56,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:56,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:56,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:56,945 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:56,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:51:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:57,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:51:57,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:57,155 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 01:51:57,484 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 01:51:57,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:58,063 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 01:51:58,064 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:58,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927063141] [2021-11-07 01:51:58,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927063141] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:58,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:58,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:51:58,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295904589] [2021-11-07 01:51:58,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:51:58,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:58,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:51:58,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:51:58,067 INFO L87 Difference]: Start difference. First operand 885 states and 1220 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 01:52:02,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:02,320 INFO L93 Difference]: Finished difference Result 1006 states and 1323 transitions. [2021-11-07 01:52:02,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:52:02,322 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 01:52:02,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:02,329 INFO L225 Difference]: With dead ends: 1006 [2021-11-07 01:52:02,330 INFO L226 Difference]: Without dead ends: 1006 [2021-11-07 01:52:02,331 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 01:52:02,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2021-11-07 01:52:02,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 881. [2021-11-07 01:52:02,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 652 states have (on average 1.8588957055214723) internal successors, (1212), 880 states have internal predecessors, (1212), 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 01:52:02,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1212 transitions. [2021-11-07 01:52:02,361 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1212 transitions. Word has length 27 [2021-11-07 01:52:02,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:02,363 INFO L470 AbstractCegarLoop]: Abstraction has 881 states and 1212 transitions. [2021-11-07 01:52:02,364 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 01:52:02,364 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1212 transitions. [2021-11-07 01:52:02,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 01:52:02,366 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:02,366 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 01:52:02,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:02,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:02,585 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-07 01:52:02,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:02,585 INFO L85 PathProgramCache]: Analyzing trace with hash 944973104, now seen corresponding path program 1 times [2021-11-07 01:52:02,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:02,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292841817] [2021-11-07 01:52:02,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:02,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:02,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:02,588 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:02,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:52:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:02,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:52:02,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:03,032 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 01:52:03,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:03,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:03,194 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:03,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292841817] [2021-11-07 01:52:03,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292841817] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:03,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:03,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:52:03,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204525748] [2021-11-07 01:52:03,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:52:03,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:03,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:52:03,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:52:03,197 INFO L87 Difference]: Start difference. First operand 881 states and 1212 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 01:52:03,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:03,277 INFO L93 Difference]: Finished difference Result 869 states and 1192 transitions. [2021-11-07 01:52:03,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:52:03,278 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 01:52:03,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:03,284 INFO L225 Difference]: With dead ends: 869 [2021-11-07 01:52:03,285 INFO L226 Difference]: Without dead ends: 869 [2021-11-07 01:52:03,285 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 01:52:03,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2021-11-07 01:52:03,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 869. [2021-11-07 01:52:03,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 640 states have (on average 1.8625) internal successors, (1192), 868 states have internal predecessors, (1192), 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 01:52:03,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1192 transitions. [2021-11-07 01:52:03,317 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1192 transitions. Word has length 42 [2021-11-07 01:52:03,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:03,319 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1192 transitions. [2021-11-07 01:52:03,320 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 01:52:03,320 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1192 transitions. [2021-11-07 01:52:03,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:52:03,326 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:03,326 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 01:52:03,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:03,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:03,539 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-07 01:52:03,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:03,540 INFO L85 PathProgramCache]: Analyzing trace with hash 29098340, now seen corresponding path program 1 times [2021-11-07 01:52:03,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:03,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90229413] [2021-11-07 01:52:03,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:03,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:03,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:03,543 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:03,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:52:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:03,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:52:03,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:04,442 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 01:52:04,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:04,947 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 01:52:04,947 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:04,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90229413] [2021-11-07 01:52:04,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90229413] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:04,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:04,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:52:04,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091606973] [2021-11-07 01:52:04,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:52:04,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:04,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:52:04,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:52:04,952 INFO L87 Difference]: Start difference. First operand 869 states and 1192 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 01:52:05,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:05,071 INFO L93 Difference]: Finished difference Result 819 states and 1087 transitions. [2021-11-07 01:52:05,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:52:05,072 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 01:52:05,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:05,079 INFO L225 Difference]: With dead ends: 819 [2021-11-07 01:52:05,079 INFO L226 Difference]: Without dead ends: 819 [2021-11-07 01:52:05,080 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 01:52:05,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-11-07 01:52:05,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2021-11-07 01:52:05,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 590 states have (on average 1.8423728813559321) internal successors, (1087), 818 states have internal predecessors, (1087), 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 01:52:05,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1087 transitions. [2021-11-07 01:52:05,108 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1087 transitions. Word has length 50 [2021-11-07 01:52:05,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:05,108 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 1087 transitions. [2021-11-07 01:52:05,109 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 01:52:05,109 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1087 transitions. [2021-11-07 01:52:05,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 01:52:05,115 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:05,115 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 01:52:05,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:05,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:05,330 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-07 01:52:05,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:05,330 INFO L85 PathProgramCache]: Analyzing trace with hash -839399161, now seen corresponding path program 1 times [2021-11-07 01:52:05,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:05,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693776209] [2021-11-07 01:52:05,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:05,332 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:05,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:05,333 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:05,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:52:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:05,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:52:05,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:05,967 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 01:52:05,975 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 01:52:06,967 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 01:52:06,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-07 01:52:06,977 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 01:52:06,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-07 01:52:07,034 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 01:52:07,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:12,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:12,996 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:12,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693776209] [2021-11-07 01:52:12,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693776209] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:12,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:12,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:52:12,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589754505] [2021-11-07 01:52:12,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:52:12,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:12,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:52:12,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-07 01:52:12,999 INFO L87 Difference]: Start difference. First operand 819 states and 1087 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 01:52:23,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:23,002 INFO L93 Difference]: Finished difference Result 794 states and 1025 transitions. [2021-11-07 01:52:23,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:52:23,003 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 01:52:23,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:23,009 INFO L225 Difference]: With dead ends: 794 [2021-11-07 01:52:23,009 INFO L226 Difference]: Without dead ends: 794 [2021-11-07 01:52:23,010 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-07 01:52:23,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-11-07 01:52:23,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 749. [2021-11-07 01:52:23,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 558 states have (on average 1.6935483870967742) internal successors, (945), 748 states have internal predecessors, (945), 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 01:52:23,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 945 transitions. [2021-11-07 01:52:23,038 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 945 transitions. Word has length 53 [2021-11-07 01:52:23,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:23,039 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 945 transitions. [2021-11-07 01:52:23,039 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 01:52:23,039 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 945 transitions. [2021-11-07 01:52:23,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:52:23,040 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:23,041 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 01:52:23,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:23,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:23,258 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-07 01:52:23,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:23,259 INFO L85 PathProgramCache]: Analyzing trace with hash -416260760, now seen corresponding path program 1 times [2021-11-07 01:52:23,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:23,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706306679] [2021-11-07 01:52:23,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:23,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:23,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:23,262 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:23,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:52:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:23,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:52:23,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:23,937 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 01:52:23,958 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 01:52:24,017 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 01:52:24,055 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 01:52:24,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:24,253 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 01:52:24,253 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:24,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706306679] [2021-11-07 01:52:24,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706306679] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:24,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:24,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:52:24,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342069732] [2021-11-07 01:52:24,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:52:24,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:24,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:52:24,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:52:24,256 INFO L87 Difference]: Start difference. First operand 749 states and 945 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 01:52:27,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:27,979 INFO L93 Difference]: Finished difference Result 1018 states and 1234 transitions. [2021-11-07 01:52:27,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:52:27,980 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 01:52:27,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:27,987 INFO L225 Difference]: With dead ends: 1018 [2021-11-07 01:52:27,987 INFO L226 Difference]: Without dead ends: 1018 [2021-11-07 01:52:27,988 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 01:52:27,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2021-11-07 01:52:28,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 748. [2021-11-07 01:52:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 558 states have (on average 1.689964157706093) internal successors, (943), 747 states have internal predecessors, (943), 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 01:52:28,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 943 transitions. [2021-11-07 01:52:28,011 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 943 transitions. Word has length 59 [2021-11-07 01:52:28,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:28,012 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 943 transitions. [2021-11-07 01:52:28,012 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 01:52:28,013 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 943 transitions. [2021-11-07 01:52:28,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:52:28,014 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:28,014 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 01:52:28,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-07 01:52:28,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:28,231 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-07 01:52:28,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:28,231 INFO L85 PathProgramCache]: Analyzing trace with hash -19181353, now seen corresponding path program 1 times [2021-11-07 01:52:28,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:28,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90095222] [2021-11-07 01:52:28,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:28,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:28,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:28,233 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:28,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:52:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:28,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:52:28,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:28,894 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 01:52:28,924 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 01:52:28,939 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 01:52:29,035 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 01:52:29,041 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 01:52:29,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:29,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:29,777 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 01:52:29,777 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:29,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90095222] [2021-11-07 01:52:29,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90095222] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:29,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:29,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:52:29,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319326885] [2021-11-07 01:52:29,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:52:29,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:29,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:52:29,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:52:29,780 INFO L87 Difference]: Start difference. First operand 748 states and 943 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 01:52:40,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:40,848 INFO L93 Difference]: Finished difference Result 889 states and 1101 transitions. [2021-11-07 01:52:40,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:52:40,849 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 01:52:40,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:40,854 INFO L225 Difference]: With dead ends: 889 [2021-11-07 01:52:40,854 INFO L226 Difference]: Without dead ends: 889 [2021-11-07 01:52:40,854 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 01:52:40,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2021-11-07 01:52:40,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 747. [2021-11-07 01:52:40,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 558 states have (on average 1.6863799283154122) internal successors, (941), 746 states have internal predecessors, (941), 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 01:52:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 941 transitions. [2021-11-07 01:52:40,886 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 941 transitions. Word has length 60 [2021-11-07 01:52:40,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:40,887 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 941 transitions. [2021-11-07 01:52:40,887 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 01:52:40,887 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 941 transitions. [2021-11-07 01:52:40,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 01:52:40,889 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:40,889 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 01:52:40,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:41,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:41,104 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-07 01:52:41,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:41,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1927168386, now seen corresponding path program 1 times [2021-11-07 01:52:41,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:41,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863154738] [2021-11-07 01:52:41,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:41,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:41,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:41,110 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:41,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:52:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:41,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:52:41,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:41,856 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 01:52:41,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:42,036 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 01:52:42,036 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:42,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863154738] [2021-11-07 01:52:42,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863154738] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:42,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:42,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:52:42,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837478428] [2021-11-07 01:52:42,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:52:42,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:42,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:52:42,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:52:42,040 INFO L87 Difference]: Start difference. First operand 747 states and 941 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 01:52:42,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:42,261 INFO L93 Difference]: Finished difference Result 1301 states and 1618 transitions. [2021-11-07 01:52:42,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:52:42,262 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 01:52:42,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:42,271 INFO L225 Difference]: With dead ends: 1301 [2021-11-07 01:52:42,274 INFO L226 Difference]: Without dead ends: 1301 [2021-11-07 01:52:42,275 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 01:52:42,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2021-11-07 01:52:42,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 753. [2021-11-07 01:52:42,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 564 states have (on average 1.679078014184397) internal successors, (947), 752 states have internal predecessors, (947), 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 01:52:42,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 947 transitions. [2021-11-07 01:52:42,300 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 947 transitions. Word has length 64 [2021-11-07 01:52:42,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:42,301 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 947 transitions. [2021-11-07 01:52:42,301 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 01:52:42,301 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 947 transitions. [2021-11-07 01:52:42,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 01:52:42,302 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:42,302 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 01:52:42,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:42,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:42,519 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-07 01:52:42,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:42,520 INFO L85 PathProgramCache]: Analyzing trace with hash -938951394, now seen corresponding path program 1 times [2021-11-07 01:52:42,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:42,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530496800] [2021-11-07 01:52:42,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:42,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:42,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:42,523 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:42,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:52:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:43,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:52:43,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:43,521 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 01:52:43,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:43,781 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 01:52:43,781 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:43,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530496800] [2021-11-07 01:52:43,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530496800] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:43,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1852201424] [2021-11-07 01:52:43,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:43,782 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:52:43,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:52:43,785 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:52:43,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 01:52:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:44,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:52:44,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:44,792 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 01:52:44,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:44,921 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 01:52:44,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1852201424] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:44,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725161983] [2021-11-07 01:52:44,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:44,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:52:44,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:52:44,924 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:52:44,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 01:52:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:45,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:52:45,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:45,832 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 01:52:45,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:46,201 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 01:52:46,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725161983] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:46,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:52:46,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 13 [2021-11-07 01:52:46,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840833394] [2021-11-07 01:52:46,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:52:46,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:46,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:52:46,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:52:46,205 INFO L87 Difference]: Start difference. First operand 753 states and 947 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 01:52:47,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:47,430 INFO L93 Difference]: Finished difference Result 1863 states and 2303 transitions. [2021-11-07 01:52:47,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 01:52:47,431 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 01:52:47,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:47,445 INFO L225 Difference]: With dead ends: 1863 [2021-11-07 01:52:47,446 INFO L226 Difference]: Without dead ends: 1863 [2021-11-07 01:52:47,449 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 01:52:47,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2021-11-07 01:52:47,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 771. [2021-11-07 01:52:47,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 582 states have (on average 1.6649484536082475) internal successors, (969), 770 states have internal predecessors, (969), 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 01:52:47,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 969 transitions. [2021-11-07 01:52:47,497 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 969 transitions. Word has length 66 [2021-11-07 01:52:47,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:47,498 INFO L470 AbstractCegarLoop]: Abstraction has 771 states and 969 transitions. [2021-11-07 01:52:47,498 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 01:52:47,499 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 969 transitions. [2021-11-07 01:52:47,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:52:47,499 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:47,500 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 01:52:47,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:47,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:47,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:48,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:52:48,119 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-07 01:52:48,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:48,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1093747294, now seen corresponding path program 2 times [2021-11-07 01:52:48,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:48,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416452364] [2021-11-07 01:52:48,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:52:48,121 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:48,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:48,122 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:48,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:52:49,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:52:49,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:52:49,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:52:49,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:49,439 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 01:52:49,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:50,352 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 01:52:50,352 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:50,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416452364] [2021-11-07 01:52:50,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416452364] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:50,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1000593739] [2021-11-07 01:52:50,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:52:50,353 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:52:50,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:52:50,354 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:52:50,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-07 01:52:52,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:52:52,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:52:52,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:52:52,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:52,415 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 01:52:52,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:52,815 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 01:52:52,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1000593739] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:52,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222981773] [2021-11-07 01:52:52,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:52:52,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:52:52,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:52:52,817 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:52:52,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 01:53:09,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:53:09,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:53:09,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 01:53:09,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:53:09,802 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:53:09,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-07 01:53:09,873 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 01:53:10,301 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-07 01:53:10,301 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 01:53:10,518 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:53:10,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 38 [2021-11-07 01:53:11,427 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:53:11,427 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 01:53:11,635 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:53:11,635 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 01:53:12,720 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:53:12,721 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 01:53:15,851 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:53:15,851 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 66 treesize of output 47 [2021-11-07 01:53:16,173 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-07 01:53:16,173 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 01:53:16,254 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 01:53:16,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:54:39,823 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145_74| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145_74| |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))))))))) (_ bv1 1)))) is different from false [2021-11-07 01:54:39,897 INFO L354 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2021-11-07 01:54:39,898 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 45 treesize of output 44 [2021-11-07 01:54:41,920 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145_74| (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145_74| |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)) |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|)) is different from false [2021-11-07 01:55:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 5 refuted. 3 times theorem prover too weak. 4 trivial. 6 not checked. [2021-11-07 01:55:38,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222981773] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:55:38,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:55:38,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 11] total 36 [2021-11-07 01:55:38,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037512428] [2021-11-07 01:55:38,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-07 01:55:38,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:55:38,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-07 01:55:38,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=927, Unknown=42, NotChecked=130, Total=1260 [2021-11-07 01:55:38,417 INFO L87 Difference]: Start difference. First operand 771 states and 969 transitions. Second operand has 36 states, 36 states have (on average 5.722222222222222) internal successors, (206), 36 states have internal predecessors, (206), 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 01:58:23,470 WARN L207 SmtUtils]: Spent 22.36 s on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-11-07 01:59:10,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:59:10,489 INFO L93 Difference]: Finished difference Result 2533 states and 3156 transitions. [2021-11-07 01:59:10,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-07 01:59:10,496 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.722222222222222) internal successors, (206), 36 states have internal predecessors, (206), 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 01:59:10,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:59:10,507 INFO L225 Difference]: With dead ends: 2533 [2021-11-07 01:59:10,507 INFO L226 Difference]: Without dead ends: 2533 [2021-11-07 01:59:10,510 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 376 SyntacticMatches, 8 SemanticMatches, 97 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2806 ImplicationChecksByTransitivity, 271.7s TimeCoverageRelationStatistics Valid=1779, Invalid=7463, Unknown=78, NotChecked=382, Total=9702 [2021-11-07 01:59:10,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2021-11-07 01:59:10,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 802. [2021-11-07 01:59:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 614 states have (on average 1.6465798045602607) internal successors, (1011), 801 states have internal predecessors, (1011), 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 01:59:10,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1011 transitions. [2021-11-07 01:59:10,535 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1011 transitions. Word has length 70 [2021-11-07 01:59:10,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:59:10,536 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 1011 transitions. [2021-11-07 01:59:10,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.722222222222222) internal successors, (206), 36 states have internal predecessors, (206), 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 01:59:10,536 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1011 transitions. [2021-11-07 01:59:10,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 01:59:10,537 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:10,537 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 01:59:10,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:59:10,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-07 01:59:10,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:59:11,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:59:11,153 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-07 01:59:11,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:11,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1408996129, now seen corresponding path program 1 times [2021-11-07 01:59:11,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:59:11,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256763323] [2021-11-07 01:59:11,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:11,155 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:59:11,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:59:11,156 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:59:11,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 01:59:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:12,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:59:12,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:59:12,738 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 01:59:12,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:59:13,947 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 01:59:13,947 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:59:13,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256763323] [2021-11-07 01:59:13,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256763323] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:59:13,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [123630473] [2021-11-07 01:59:13,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:13,948 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:59:13,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:59:13,951 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:59:13,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-07 01:59:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:14,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:59:14,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:59:15,198 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 01:59:15,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:59:15,395 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 01:59:15,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [123630473] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:59:15,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296109781] [2021-11-07 01:59:15,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:15,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:59:15,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:59:15,396 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:59:15,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-07 01:59:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:16,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:59:16,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:59:16,490 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 01:59:16,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:59:20,122 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 01:59:20,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296109781] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:59:20,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:59:20,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 18, 18] total 49 [2021-11-07 01:59:20,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545506851] [2021-11-07 01:59:20,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-07 01:59:20,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:59:20,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-07 01:59:20,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=592, Invalid=1760, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 01:59:20,125 INFO L87 Difference]: Start difference. First operand 802 states and 1011 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 01:59:49,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:59:49,208 INFO L93 Difference]: Finished difference Result 7124 states and 8687 transitions. [2021-11-07 01:59:49,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-11-07 01:59:49,209 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 01:59:49,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:59:49,259 INFO L225 Difference]: With dead ends: 7124 [2021-11-07 01:59:49,259 INFO L226 Difference]: Without dead ends: 7124 [2021-11-07 01:59:49,264 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 01:59:49,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7124 states. [2021-11-07 01:59:49,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7124 to 866. [2021-11-07 01:59:49,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 678 states have (on average 1.5973451327433628) internal successors, (1083), 865 states have internal predecessors, (1083), 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 01:59:49,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1083 transitions. [2021-11-07 01:59:49,343 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1083 transitions. Word has length 78 [2021-11-07 01:59:49,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:59:49,344 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 1083 transitions. [2021-11-07 01:59:49,344 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 01:59:49,344 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1083 transitions. [2021-11-07 01:59:49,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 01:59:49,345 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:49,345 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 01:59:49,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-07 01:59:49,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-07 01:59:49,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:59:49,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:59:49,964 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-07 01:59:49,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:49,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2005712417, now seen corresponding path program 2 times [2021-11-07 01:59:49,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:59:49,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515188884] [2021-11-07 01:59:49,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:59:49,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:59:49,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:59:49,967 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:59:49,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-07 01:59:50,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:59:50,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:59:50,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-07 01:59:50,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:59:52,889 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 01:59:52,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:59:59,217 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 01:59:59,217 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:59:59,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515188884] [2021-11-07 01:59:59,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515188884] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:59:59,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [36612317] [2021-11-07 01:59:59,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:59:59,218 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:59:59,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:59:59,222 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:59:59,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-07 02:00:01,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:00:01,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:00:01,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-07 02:00:01,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:01,478 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 02:00:01,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:03,275 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 02:00:03,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [36612317] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:03,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126945831] [2021-11-07 02:00:03,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:00:03,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:00:03,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:00:03,276 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:00:03,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-07 02:00:14,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:00:14,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:00:14,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-07 02:00:14,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:14,683 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 02:00:14,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:22,732 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 02:00:22,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126945831] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:22,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:00:22,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34, 34, 34, 34] total 95 [2021-11-07 02:00:22,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168228678] [2021-11-07 02:00:22,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2021-11-07 02:00:22,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:22,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-11-07 02:00:22,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2105, Invalid=6825, Unknown=0, NotChecked=0, Total=8930 [2021-11-07 02:00:22,738 INFO L87 Difference]: Start difference. First operand 866 states and 1083 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 02:01:40,710 WARN L207 SmtUtils]: Spent 5.06 s on a formula simplification. DAG size of input: 140 DAG size of output: 116 [2021-11-07 02:02:03,222 WARN L207 SmtUtils]: Spent 5.16 s on a formula simplification. DAG size of input: 140 DAG size of output: 116 [2021-11-07 02:03:55,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:03:55,540 INFO L93 Difference]: Finished difference Result 15932 states and 20015 transitions. [2021-11-07 02:03:55,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-11-07 02:03:55,545 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 02:03:55,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:03:55,627 INFO L225 Difference]: With dead ends: 15932 [2021-11-07 02:03:55,627 INFO L226 Difference]: Without dead ends: 15932 [2021-11-07 02:03:55,637 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10799 ImplicationChecksByTransitivity, 178.0s TimeCoverageRelationStatistics Valid=7257, Invalid=26783, Unknown=0, NotChecked=0, Total=34040 [2021-11-07 02:03:55,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15932 states. [2021-11-07 02:03:55,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15932 to 994. [2021-11-07 02:03:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 806 states have (on average 1.5794044665012408) internal successors, (1273), 993 states have internal predecessors, (1273), 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 02:03:55,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1273 transitions. [2021-11-07 02:03:55,761 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1273 transitions. Word has length 94 [2021-11-07 02:03:55,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:03:55,762 INFO L470 AbstractCegarLoop]: Abstraction has 994 states and 1273 transitions. [2021-11-07 02:03:55,762 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 02:03:55,763 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1273 transitions. [2021-11-07 02:03:55,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 02:03:55,763 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:03:55,764 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 02:03:55,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:56,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:56,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:56,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:03:56,382 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-07 02:03:56,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:03:56,382 INFO L85 PathProgramCache]: Analyzing trace with hash -12810177, now seen corresponding path program 3 times [2021-11-07 02:03:56,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:03:56,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389717471] [2021-11-07 02:03:56,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:03:56,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:03:56,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:03:56,386 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:03:56,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ef6722-e9aa-4fba-8f8d-6111c26c3812/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-07 02:03:59,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2021-11-07 02:03:59,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:03:59,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 100 conjunts are in the unsatisfiable core [2021-11-07 02:03:59,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:59,350 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 02:03:59,818 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 02:03:59,819 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 02:03:59,831 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 02:03:59,885 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 02:03:59,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 02:04:00,223 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-07 02:04:00,224 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 02:04:00,251 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-07 02:04:00,252 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 02:04:00,448 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:00,449 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 02:04:01,355 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:01,356 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 02:04:04,147 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:04,149 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 02:04:04,748 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:04,749 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 02:04:04,930 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:04,930 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 02:04:06,381 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:06,381 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 02:04:06,570 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:06,570 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 02:04:09,658 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:09,658 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 02:04:14,139 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:14,140 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 02:04:14,197 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:14,198 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 02:04:14,383 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:14,383 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 02:04:14,451 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:14,451 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 02:04:16,913 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:16,913 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 02:04:16,965 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:16,965 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 02:04:17,132 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:17,132 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 02:04:17,191 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:17,191 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 02:04:22,838 WARN L207 SmtUtils]: Spent 5.52 s on a formula simplification. DAG size of input: 40 DAG size of output: 22 [2021-11-07 02:04:22,838 INFO L354 Elim1Store]: treesize reduction 76, result has 23.2 percent of original size [2021-11-07 02:04:22,839 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 94 [2021-11-07 02:04:25,403 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:25,403 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 78 [2021-11-07 02:04:25,573 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:25,574 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 02:04:27,019 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:27,020 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 02:04:27,187 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:27,188 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 02:04:27,246 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:27,246 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 02:04:32,313 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:32,314 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 02:04:32,372 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:32,372 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 02:04:34,443 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:34,444 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 02:04:34,498 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:34,498 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 02:04:34,699 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:34,699 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 02:04:38,661 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:38,662 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 02:04:38,829 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:38,829 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 02:04:40,283 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:40,284 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 02:04:42,698 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:42,698 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 02:04:42,752 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:42,753 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 02:04:44,152 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:44,153 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 02:04:44,206 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:44,206 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 02:04:46,301 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:46,301 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 02:04:49,107 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:49,107 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 02:04:50,733 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:50,734 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 02:04:50,790 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:50,791 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 02:04:52,136 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:52,137 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 02:04:52,186 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:52,186 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 02:04:55,585 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:55,586 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 02:04:55,643 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:55,643 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 02:04:57,675 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:04:57,675 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 02:04:59,314 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:04:59,314 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 02:05:00,535 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:05:00,536 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 02:05:04,336 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:05:04,336 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 02:05:05,830 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:05:05,831 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 02:05:05,884 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:05:05,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 02:05:06,037 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:05:06,038 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 02:05:06,952 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:05:06,952 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 02:05:09,357 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 02:05:09,358 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 88 treesize of output 90 [2021-11-07 02:05:09,412 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 02:05:09,412 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