./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P --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 22b4144b7005899e18ff8135fa52f12863f7106dbe1ddb808d25d8593c5f8fc4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:46:38,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:46:38,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:46:38,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:46:38,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:46:38,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:46:38,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:46:38,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:46:38,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:46:38,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:46:38,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:46:38,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:46:38,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:46:39,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:46:39,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:46:39,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:46:39,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:46:39,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:46:39,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:46:39,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:46:39,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:46:39,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:46:39,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:46:39,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:46:39,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:46:39,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:46:39,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:46:39,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:46:39,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:46:39,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:46:39,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:46:39,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:46:39,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:46:39,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:46:39,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:46:39,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:46:39,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:46:39,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:46:39,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:46:39,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:46:39,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:46:39,067 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-21 01:46:39,133 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:46:39,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:46:39,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:46:39,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:46:39,134 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:46:39,134 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:46:39,134 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:46:39,135 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:46:39,135 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:46:39,135 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:46:39,135 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:46:39,136 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:46:39,136 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:46:39,136 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:46:39,136 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:46:39,136 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:46:39,137 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:46:39,137 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:46:39,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:46:39,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:46:39,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:46:39,138 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:46:39,138 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:46:39,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:46:39,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:46:39,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:46:39,139 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:46:39,139 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:46:39,139 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:46:39,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:46:39,140 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:46:39,140 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:46:39,140 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:46:39,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:46:39,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:46:39,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:46:39,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:46:39,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:46:39,141 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:46:39,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:46:39,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:46:39,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:46:39,142 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_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b4144b7005899e18ff8135fa52f12863f7106dbe1ddb808d25d8593c5f8fc4 [2021-11-21 01:46:39,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:46:39,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:46:39,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:46:39,489 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:46:39,490 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:46:39,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i [2021-11-21 01:46:39,614 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/data/ae1251911/400d3061dc614c93bcb7ed284ddeb3e0/FLAG9b757a853 [2021-11-21 01:46:40,295 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:46:40,312 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i [2021-11-21 01:46:40,332 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/data/ae1251911/400d3061dc614c93bcb7ed284ddeb3e0/FLAG9b757a853 [2021-11-21 01:46:40,504 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/data/ae1251911/400d3061dc614c93bcb7ed284ddeb3e0 [2021-11-21 01:46:40,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:46:40,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:46:40,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:46:40,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:46:40,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:46:40,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:40" (1/1) ... [2021-11-21 01:46:40,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57dab8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:40, skipping insertion in model container [2021-11-21 01:46:40,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:40" (1/1) ... [2021-11-21 01:46:40,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:46:40,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:46:41,070 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[33021,33034] [2021-11-21 01:46:41,244 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44124,44137] [2021-11-21 01:46:41,247 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44245,44258] [2021-11-21 01:46:41,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:46:41,275 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) [2021-11-21 01:46:41,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5e428018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:41, skipping insertion in model container [2021-11-21 01:46:41,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:46:41,278 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-21 01:46:41,280 INFO L158 Benchmark]: Toolchain (without parser) took 769.29ms. Allocated memory is still 117.4MB. Free memory was 75.7MB in the beginning and 81.0MB in the end (delta: -5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:46:41,281 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 94.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:46:41,283 INFO L158 Benchmark]: CACSL2BoogieTranslator took 763.52ms. Allocated memory is still 117.4MB. Free memory was 75.5MB in the beginning and 81.0MB in the end (delta: -5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:46:41,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 94.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 763.52ms. Allocated memory is still 117.4MB. Free memory was 75.5MB in the beginning and 81.0MB in the end (delta: -5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P --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 22b4144b7005899e18ff8135fa52f12863f7106dbe1ddb808d25d8593c5f8fc4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:46:43,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:46:43,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:46:43,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:46:43,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:46:43,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:46:43,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:46:43,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:46:43,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:46:43,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:46:43,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:46:43,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:46:43,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:46:43,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:46:43,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:46:43,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:46:43,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:46:43,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:46:43,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:46:43,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:46:43,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:46:43,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:46:43,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:46:43,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:46:43,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:46:43,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:46:43,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:46:43,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:46:43,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:46:43,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:46:43,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:46:43,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:46:43,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:46:43,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:46:43,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:46:43,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:46:43,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:46:43,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:46:43,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:46:43,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:46:43,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:46:43,846 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-21 01:46:43,899 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:46:43,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:46:43,900 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:46:43,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:46:43,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:46:43,902 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:46:43,902 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:46:43,902 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:46:43,903 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:46:43,903 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:46:43,904 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:46:43,905 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:46:43,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:46:43,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:46:43,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:46:43,907 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:46:43,907 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:46:43,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:46:43,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:46:43,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:46:43,909 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:46:43,909 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:46:43,909 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:46:43,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:46:43,910 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:46:43,910 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:46:43,910 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:46:43,910 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:46:43,911 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:46:43,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:46:43,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:46:43,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:46:43,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:46:43,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:46:43,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:46:43,913 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:46:43,914 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:46:43,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:46:43,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:46:43,914 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_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b4144b7005899e18ff8135fa52f12863f7106dbe1ddb808d25d8593c5f8fc4 [2021-11-21 01:46:44,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:46:44,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:46:44,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:46:44,389 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:46:44,389 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:46:44,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i [2021-11-21 01:46:44,470 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/data/0f6d67983/b9f13737feb343bd89f98abecad07074/FLAGc1acbc44a [2021-11-21 01:46:45,249 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:46:45,250 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i [2021-11-21 01:46:45,282 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/data/0f6d67983/b9f13737feb343bd89f98abecad07074/FLAGc1acbc44a [2021-11-21 01:46:45,476 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/data/0f6d67983/b9f13737feb343bd89f98abecad07074 [2021-11-21 01:46:45,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:46:45,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:46:45,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:46:45,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:46:45,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:46:45,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:45" (1/1) ... [2021-11-21 01:46:45,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d862ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:45, skipping insertion in model container [2021-11-21 01:46:45,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:45" (1/1) ... [2021-11-21 01:46:45,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:46:45,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:46:46,090 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[33021,33034] [2021-11-21 01:46:46,245 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44124,44137] [2021-11-21 01:46:46,247 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44245,44258] [2021-11-21 01:46:46,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:46:46,289 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-21 01:46:46,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:46:46,330 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[33021,33034] [2021-11-21 01:46:46,437 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44124,44137] [2021-11-21 01:46:46,438 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44245,44258] [2021-11-21 01:46:46,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:46:46,458 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:46:46,502 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[33021,33034] [2021-11-21 01:46:46,583 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44124,44137] [2021-11-21 01:46:46,584 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44245,44258] [2021-11-21 01:46:46,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:46:46,647 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:46:46,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:46 WrapperNode [2021-11-21 01:46:46,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:46:46,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:46:46,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:46:46,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:46:46,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:46" (1/1) ... [2021-11-21 01:46:46,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:46" (1/1) ... [2021-11-21 01:46:46,782 INFO L137 Inliner]: procedures = 179, calls = 277, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1011 [2021-11-21 01:46:46,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:46:46,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:46:46,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:46:46,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:46:46,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:46" (1/1) ... [2021-11-21 01:46:46,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:46" (1/1) ... [2021-11-21 01:46:46,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:46" (1/1) ... [2021-11-21 01:46:46,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:46" (1/1) ... [2021-11-21 01:46:46,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:46" (1/1) ... [2021-11-21 01:46:46,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:46" (1/1) ... [2021-11-21 01:46:46,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:46" (1/1) ... [2021-11-21 01:46:47,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:46:47,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:46:47,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:46:47,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:46:47,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:46" (1/1) ... [2021-11-21 01:46:47,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:46:47,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:46:47,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:46:47,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:46:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-21 01:46:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 01:46:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:46:47,165 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:46:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:46:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:46:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:46:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:46:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 01:46:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:46:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:46:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 01:46:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:46:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:46:47,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:46:47,466 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:46:47,469 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:46:47,474 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 01:46:52,704 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:46:52,737 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:46:52,743 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-21 01:46:52,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:46:52 BoogieIcfgContainer [2021-11-21 01:46:52,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:46:52,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:46:52,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:46:52,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:46:52,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:46:45" (1/3) ... [2021-11-21 01:46:52,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b219ecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:46:52, skipping insertion in model container [2021-11-21 01:46:52,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:46" (2/3) ... [2021-11-21 01:46:52,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b219ecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:46:52, skipping insertion in model container [2021-11-21 01:46:52,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:46:52" (3/3) ... [2021-11-21 01:46:52,763 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test7-1.i [2021-11-21 01:46:52,770 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:46:52,772 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 530 error locations. [2021-11-21 01:46:52,838 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:46:52,845 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 [2021-11-21 01:46:52,845 INFO L340 AbstractCegarLoop]: Starting to check reachability of 530 error locations. [2021-11-21 01:46:52,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 1050 states, 518 states have (on average 2.2548262548262548) internal successors, (1168), 1045 states have internal predecessors, (1168), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:46:52,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 01:46:52,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:52,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 01:46:52,904 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-21 01:46:52,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:52,911 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-21 01:46:52,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:46:52,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258276340] [2021-11-21 01:46:52,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:52,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:46:52,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:46:52,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:46:52,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:46:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:53,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:46:53,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:46:53,184 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 [2021-11-21 01:46:53,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:46:53,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:46:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:46:53,220 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:46:53,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258276340] [2021-11-21 01:46:53,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258276340] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:53,222 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:53,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:46:53,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764255137] [2021-11-21 01:46:53,225 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:53,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:53,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:46:53,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:53,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:53,283 INFO L87 Difference]: Start difference. First operand has 1050 states, 518 states have (on average 2.2548262548262548) internal successors, (1168), 1045 states have internal predecessors, (1168), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:46:55,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:55,831 INFO L93 Difference]: Finished difference Result 1041 states and 1096 transitions. [2021-11-21 01:46:55,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:55,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-21 01:46:55,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:55,858 INFO L225 Difference]: With dead ends: 1041 [2021-11-21 01:46:55,858 INFO L226 Difference]: Without dead ends: 1039 [2021-11-21 01:46:55,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:55,865 INFO L933 BasicCegarLoop]: 618 mSDtfsCounter, 969 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:55,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 670 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-21 01:46:55,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2021-11-21 01:46:55,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1031. [2021-11-21 01:46:55,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 516 states have (on average 2.0949612403100777) internal successors, (1081), 1026 states have internal predecessors, (1081), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:46:55,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1087 transitions. [2021-11-21 01:46:55,980 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1087 transitions. Word has length 3 [2021-11-21 01:46:55,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:55,981 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 1087 transitions. [2021-11-21 01:46:55,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:46:55,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1087 transitions. [2021-11-21 01:46:55,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 01:46:55,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:55,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 01:46:56,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:46:56,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:46:56,200 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-21 01:46:56,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:56,201 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-21 01:46:56,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:46:56,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917718682] [2021-11-21 01:46:56,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:56,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:46:56,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:46:56,205 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:46:56,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:46:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:56,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:46:56,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:46:56,395 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 [2021-11-21 01:46:56,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:46:56,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:46:56,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:46:56,473 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:46:56,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917718682] [2021-11-21 01:46:56,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917718682] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:56,474 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:56,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 01:46:56,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814238995] [2021-11-21 01:46:56,475 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:56,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:46:56,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:46:56,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:46:56,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:46:56,478 INFO L87 Difference]: Start difference. First operand 1031 states and 1087 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:47:01,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:01,589 INFO L93 Difference]: Finished difference Result 1496 states and 1584 transitions. [2021-11-21 01:47:01,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:47:01,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-21 01:47:01,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:01,598 INFO L225 Difference]: With dead ends: 1496 [2021-11-21 01:47:01,598 INFO L226 Difference]: Without dead ends: 1496 [2021-11-21 01:47:01,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:47:01,600 INFO L933 BasicCegarLoop]: 757 mSDtfsCounter, 1544 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:01,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 1364 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-21 01:47:01,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-11-21 01:47:01,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1066. [2021-11-21 01:47:01,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 560 states have (on average 2.0714285714285716) internal successors, (1160), 1061 states have internal predecessors, (1160), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:47:01,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1166 transitions. [2021-11-21 01:47:01,674 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1166 transitions. Word has length 3 [2021-11-21 01:47:01,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:01,674 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1166 transitions. [2021-11-21 01:47:01,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:47:01,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1166 transitions. [2021-11-21 01:47:01,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:47:01,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:01,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:01,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:01,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:47:01,876 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-21 01:47:01,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:01,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-21 01:47:01,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:47:01,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384782221] [2021-11-21 01:47:01,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:01,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:47:01,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:47:01,879 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:47:01,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:47:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:01,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:47:01,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:02,006 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 [2021-11-21 01:47:02,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:02,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:02,057 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:47:02,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384782221] [2021-11-21 01:47:02,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384782221] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:02,057 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:02,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:47:02,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750119402] [2021-11-21 01:47:02,060 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:02,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:47:02,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:47:02,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:47:02,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:47:02,063 INFO L87 Difference]: Start difference. First operand 1066 states and 1166 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2021-11-21 01:47:04,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:04,107 INFO L93 Difference]: Finished difference Result 1396 states and 1521 transitions. [2021-11-21 01:47:04,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:47:04,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 8 [2021-11-21 01:47:04,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:04,117 INFO L225 Difference]: With dead ends: 1396 [2021-11-21 01:47:04,117 INFO L226 Difference]: Without dead ends: 1396 [2021-11-21 01:47:04,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:47:04,119 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 975 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:04,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 1168 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-21 01:47:04,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2021-11-21 01:47:04,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1019. [2021-11-21 01:47:04,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 560 states have (on average 1.9821428571428572) internal successors, (1110), 1014 states have internal predecessors, (1110), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:47:04,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1116 transitions. [2021-11-21 01:47:04,155 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1116 transitions. Word has length 8 [2021-11-21 01:47:04,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:04,156 INFO L470 AbstractCegarLoop]: Abstraction has 1019 states and 1116 transitions. [2021-11-21 01:47:04,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2021-11-21 01:47:04,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1116 transitions. [2021-11-21 01:47:04,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:47:04,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:04,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:04,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:04,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:47:04,368 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-21 01:47:04,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:04,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-21 01:47:04,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:47:04,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689181111] [2021-11-21 01:47:04,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:04,370 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:47:04,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:47:04,371 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:47:04,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 01:47:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:04,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:47:04,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:04,527 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 [2021-11-21 01:47:04,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:04,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:04,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:04,667 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:47:04,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689181111] [2021-11-21 01:47:04,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689181111] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:04,667 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:04,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 01:47:04,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799551250] [2021-11-21 01:47:04,668 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:04,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:47:04,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:47:04,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:47:04,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:47:04,669 INFO L87 Difference]: Start difference. First operand 1019 states and 1116 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-21 01:47:09,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:09,417 INFO L93 Difference]: Finished difference Result 1440 states and 1529 transitions. [2021-11-21 01:47:09,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:47:09,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 8 [2021-11-21 01:47:09,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:09,427 INFO L225 Difference]: With dead ends: 1440 [2021-11-21 01:47:09,427 INFO L226 Difference]: Without dead ends: 1440 [2021-11-21 01:47:09,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:47:09,429 INFO L933 BasicCegarLoop]: 1099 mSDtfsCounter, 717 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:09,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 1909 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-21 01:47:09,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-11-21 01:47:09,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1009. [2021-11-21 01:47:09,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 560 states have (on average 1.9589285714285714) internal successors, (1097), 1004 states have internal predecessors, (1097), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:47:09,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1103 transitions. [2021-11-21 01:47:09,459 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1103 transitions. Word has length 8 [2021-11-21 01:47:09,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:09,459 INFO L470 AbstractCegarLoop]: Abstraction has 1009 states and 1103 transitions. [2021-11-21 01:47:09,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-21 01:47:09,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1103 transitions. [2021-11-21 01:47:09,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:47:09,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:09,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:09,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:09,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:47:09,675 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr526ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-21 01:47:09,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:09,675 INFO L85 PathProgramCache]: Analyzing trace with hash 871378613, now seen corresponding path program 1 times [2021-11-21 01:47:09,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:47:09,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820764043] [2021-11-21 01:47:09,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:09,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:47:09,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:47:09,677 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:47:09,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 01:47:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:09,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:47:09,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:09,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:09,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:09,955 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:47:09,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820764043] [2021-11-21 01:47:09,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820764043] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:09,956 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:09,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 01:47:09,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98447136] [2021-11-21 01:47:09,957 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:09,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:47:09,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:47:09,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:47:09,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:47:09,958 INFO L87 Difference]: Start difference. First operand 1009 states and 1103 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:47:10,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:10,668 INFO L93 Difference]: Finished difference Result 1456 states and 1582 transitions. [2021-11-21 01:47:10,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:47:10,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 01:47:10,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:10,676 INFO L225 Difference]: With dead ends: 1456 [2021-11-21 01:47:10,677 INFO L226 Difference]: Without dead ends: 1456 [2021-11-21 01:47:10,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:47:10,678 INFO L933 BasicCegarLoop]: 1082 mSDtfsCounter, 548 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:10,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 2931 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:47:10,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2021-11-21 01:47:10,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1246. [2021-11-21 01:47:10,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 797 states have (on average 1.9422835633626099) internal successors, (1548), 1241 states have internal predecessors, (1548), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:47:10,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1554 transitions. [2021-11-21 01:47:10,714 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1554 transitions. Word has length 11 [2021-11-21 01:47:10,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:10,714 INFO L470 AbstractCegarLoop]: Abstraction has 1246 states and 1554 transitions. [2021-11-21 01:47:10,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:47:10,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1554 transitions. [2021-11-21 01:47:10,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:47:10,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:10,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:10,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:10,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:47:10,931 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr529ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-21 01:47:10,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:10,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1242933253, now seen corresponding path program 1 times [2021-11-21 01:47:10,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:47:10,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712852411] [2021-11-21 01:47:10,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:10,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:47:10,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:47:10,934 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:47:10,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-21 01:47:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:11,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:47:11,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:11,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:11,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:11,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:11,147 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-21 01:47:11,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-21 01:47:11,216 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-21 01:47:11,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-21 01:47:11,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:11,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:11,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:11,326 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:47:11,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712852411] [2021-11-21 01:47:11,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712852411] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:11,326 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:11,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 01:47:11,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946812171] [2021-11-21 01:47:11,326 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:11,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:47:11,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:47:11,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:47:11,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:47:11,328 INFO L87 Difference]: Start difference. First operand 1246 states and 1554 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-11-21 01:47:12,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:12,926 INFO L93 Difference]: Finished difference Result 1602 states and 1969 transitions. [2021-11-21 01:47:12,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:47:12,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 12 [2021-11-21 01:47:12,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:12,935 INFO L225 Difference]: With dead ends: 1602 [2021-11-21 01:47:12,935 INFO L226 Difference]: Without dead ends: 1602 [2021-11-21 01:47:12,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:47:12,937 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 708 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:12,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 2792 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-21 01:47:12,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2021-11-21 01:47:12,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1245. [2021-11-21 01:47:12,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 796 states have (on average 1.9422110552763818) internal successors, (1546), 1240 states have internal predecessors, (1546), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:47:12,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1552 transitions. [2021-11-21 01:47:12,975 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1552 transitions. Word has length 12 [2021-11-21 01:47:12,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:12,975 INFO L470 AbstractCegarLoop]: Abstraction has 1245 states and 1552 transitions. [2021-11-21 01:47:12,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-11-21 01:47:12,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1552 transitions. [2021-11-21 01:47:12,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 01:47:12,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:12,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:12,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:13,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:47:13,191 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-21 01:47:13,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:13,192 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-21 01:47:13,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:47:13,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795590522] [2021-11-21 01:47:13,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:13,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:47:13,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:47:13,199 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:47:13,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-21 01:47:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:13,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:47:13,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:13,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:13,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:13,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:13,417 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:47:13,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795590522] [2021-11-21 01:47:13,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795590522] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:13,418 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:13,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 01:47:13,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866616278] [2021-11-21 01:47:13,418 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:13,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:47:13,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:47:13,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:47:13,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:47:13,420 INFO L87 Difference]: Start difference. First operand 1245 states and 1552 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-11-21 01:47:13,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:13,453 INFO L93 Difference]: Finished difference Result 1185 states and 1466 transitions. [2021-11-21 01:47:13,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:47:13,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 18 [2021-11-21 01:47:13,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:13,458 INFO L225 Difference]: With dead ends: 1185 [2021-11-21 01:47:13,459 INFO L226 Difference]: Without dead ends: 1185 [2021-11-21 01:47:13,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:47:13,460 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 1914 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1917 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:13,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1917 Valid, 995 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:47:13,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2021-11-21 01:47:13,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1185. [2021-11-21 01:47:13,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 760 states have (on average 1.9210526315789473) internal successors, (1460), 1180 states have internal predecessors, (1460), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:47:13,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1466 transitions. [2021-11-21 01:47:13,489 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1466 transitions. Word has length 18 [2021-11-21 01:47:13,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:13,489 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 1466 transitions. [2021-11-21 01:47:13,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-11-21 01:47:13,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1466 transitions. [2021-11-21 01:47:13,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 01:47:13,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:13,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:13,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:13,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:47:13,702 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-21 01:47:13,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:13,703 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-21 01:47:13,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:47:13,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934508121] [2021-11-21 01:47:13,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:13,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:47:13,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:47:13,704 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:47:13,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 01:47:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:13,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:47:13,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:13,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:13,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:13,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:13,925 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:47:13,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934508121] [2021-11-21 01:47:13,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934508121] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:13,925 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:13,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-21 01:47:13,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662445437] [2021-11-21 01:47:13,926 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:13,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:47:13,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:47:13,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:47:13,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:47:13,927 INFO L87 Difference]: Start difference. First operand 1185 states and 1466 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2021-11-21 01:47:14,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:14,013 INFO L93 Difference]: Finished difference Result 1157 states and 1410 transitions. [2021-11-21 01:47:14,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:47:14,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 20 [2021-11-21 01:47:14,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:14,020 INFO L225 Difference]: With dead ends: 1157 [2021-11-21 01:47:14,021 INFO L226 Difference]: Without dead ends: 1157 [2021-11-21 01:47:14,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:47:14,022 INFO L933 BasicCegarLoop]: 928 mSDtfsCounter, 1846 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:14,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1849 Valid, 1871 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:47:14,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2021-11-21 01:47:14,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1155. [2021-11-21 01:47:14,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 744 states have (on average 1.8844086021505377) internal successors, (1402), 1150 states have internal predecessors, (1402), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:47:14,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1408 transitions. [2021-11-21 01:47:14,051 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1408 transitions. Word has length 20 [2021-11-21 01:47:14,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:14,055 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 1408 transitions. [2021-11-21 01:47:14,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2021-11-21 01:47:14,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1408 transitions. [2021-11-21 01:47:14,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 01:47:14,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:14,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:14,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:14,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:47:14,269 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-21 01:47:14,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:14,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-21 01:47:14,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:47:14,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553515348] [2021-11-21 01:47:14,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:14,271 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:47:14,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:47:14,272 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:47:14,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-21 01:47:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:14,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:47:14,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:14,438 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 [2021-11-21 01:47:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:14,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:14,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:14,664 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:47:14,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553515348] [2021-11-21 01:47:14,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553515348] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:14,664 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:14,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:47:14,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297240287] [2021-11-21 01:47:14,665 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:14,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:47:14,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:47:14,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:47:14,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:47:14,666 INFO L87 Difference]: Start difference. First operand 1155 states and 1408 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-21 01:47:16,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:16,490 INFO L93 Difference]: Finished difference Result 1618 states and 1991 transitions. [2021-11-21 01:47:16,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:47:16,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2021-11-21 01:47:16,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:16,500 INFO L225 Difference]: With dead ends: 1618 [2021-11-21 01:47:16,500 INFO L226 Difference]: Without dead ends: 1618 [2021-11-21 01:47:16,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:47:16,501 INFO L933 BasicCegarLoop]: 491 mSDtfsCounter, 1684 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:16,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1684 Valid, 1009 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-21 01:47:16,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2021-11-21 01:47:16,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1151. [2021-11-21 01:47:16,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 744 states have (on average 1.8736559139784945) internal successors, (1394), 1146 states have internal predecessors, (1394), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:47:16,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1400 transitions. [2021-11-21 01:47:16,530 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1400 transitions. Word has length 34 [2021-11-21 01:47:16,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:16,530 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 1400 transitions. [2021-11-21 01:47:16,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-21 01:47:16,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1400 transitions. [2021-11-21 01:47:16,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 01:47:16,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:16,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:16,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:16,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:47:16,744 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-21 01:47:16,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:16,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-21 01:47:16,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:47:16,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856520980] [2021-11-21 01:47:16,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:16,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:47:16,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:47:16,747 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:47:16,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-21 01:47:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:16,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:47:16,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:16,928 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 [2021-11-21 01:47:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:17,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:17,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:17,637 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:47:17,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856520980] [2021-11-21 01:47:17,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856520980] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:17,637 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:17,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:47:17,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128622748] [2021-11-21 01:47:17,638 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:17,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:47:17,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:47:17,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:47:17,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:47:17,639 INFO L87 Difference]: Start difference. First operand 1151 states and 1400 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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) [2021-11-21 01:47:23,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:23,562 INFO L93 Difference]: Finished difference Result 1751 states and 2146 transitions. [2021-11-21 01:47:23,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:47:23,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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 34 [2021-11-21 01:47:23,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:23,570 INFO L225 Difference]: With dead ends: 1751 [2021-11-21 01:47:23,570 INFO L226 Difference]: Without dead ends: 1751 [2021-11-21 01:47:23,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:47:23,571 INFO L933 BasicCegarLoop]: 1151 mSDtfsCounter, 1825 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1825 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:23,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1825 Valid, 2395 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-21 01:47:23,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2021-11-21 01:47:23,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1147. [2021-11-21 01:47:23,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 744 states have (on average 1.8629032258064515) internal successors, (1386), 1142 states have internal predecessors, (1386), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:47:23,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1392 transitions. [2021-11-21 01:47:23,600 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1392 transitions. Word has length 34 [2021-11-21 01:47:23,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:23,600 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 1392 transitions. [2021-11-21 01:47:23,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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) [2021-11-21 01:47:23,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1392 transitions. [2021-11-21 01:47:23,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-21 01:47:23,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:23,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:23,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-21 01:47:23,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:47:23,814 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-21 01:47:23,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:23,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-21 01:47:23,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:47:23,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448480511] [2021-11-21 01:47:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:23,816 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:47:23,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:47:23,817 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:47:23,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-21 01:47:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:24,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:47:24,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:24,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:24,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:24,266 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:47:24,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448480511] [2021-11-21 01:47:24,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448480511] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:24,267 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:24,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 01:47:24,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464756878] [2021-11-21 01:47:24,267 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:24,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:47:24,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:47:24,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:47:24,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:47:24,268 INFO L87 Difference]: Start difference. First operand 1147 states and 1392 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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) [2021-11-21 01:47:24,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:24,327 INFO L93 Difference]: Finished difference Result 1135 states and 1372 transitions. [2021-11-21 01:47:24,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:47:24,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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 52 [2021-11-21 01:47:24,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:24,334 INFO L225 Difference]: With dead ends: 1135 [2021-11-21 01:47:24,334 INFO L226 Difference]: Without dead ends: 1135 [2021-11-21 01:47:24,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:47:24,336 INFO L933 BasicCegarLoop]: 922 mSDtfsCounter, 904 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:24,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 1849 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:47:24,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2021-11-21 01:47:24,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1135. [2021-11-21 01:47:24,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 732 states have (on average 1.866120218579235) internal successors, (1366), 1130 states have internal predecessors, (1366), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:47:24,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1372 transitions. [2021-11-21 01:47:24,363 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1372 transitions. Word has length 52 [2021-11-21 01:47:24,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:24,363 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 1372 transitions. [2021-11-21 01:47:24,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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) [2021-11-21 01:47:24,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1372 transitions. [2021-11-21 01:47:24,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-21 01:47:24,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:24,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:24,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:24,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:47:24,579 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-21 01:47:24,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:24,580 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-21 01:47:24,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:47:24,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939562571] [2021-11-21 01:47:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:24,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:47:24,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:47:24,584 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:47:24,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-21 01:47:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:24,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:47:24,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:24,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:47:24,904 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 [2021-11-21 01:47:25,615 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:47:25,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-21 01:47:25,627 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:47:25,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-21 01:47:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:25,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:30,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:30,399 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:47:30,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939562571] [2021-11-21 01:47:30,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939562571] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:30,400 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:30,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:47:30,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636717146] [2021-11-21 01:47:30,401 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:30,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:47:30,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:47:30,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:47:30,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-21 01:47:30,402 INFO L87 Difference]: Start difference. First operand 1135 states and 1372 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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) [2021-11-21 01:47:35,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:35,471 INFO L93 Difference]: Finished difference Result 1746 states and 2081 transitions. [2021-11-21 01:47:35,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:47:35,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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 [2021-11-21 01:47:35,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:35,479 INFO L225 Difference]: With dead ends: 1746 [2021-11-21 01:47:35,479 INFO L226 Difference]: Without dead ends: 1746 [2021-11-21 01:47:35,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-21 01:47:35,480 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 2212 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1470 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:35,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2216 Valid, 1575 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1426 Invalid, 0 Unknown, 1470 Unchecked, 5.0s Time] [2021-11-21 01:47:35,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2021-11-21 01:47:35,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1113. [2021-11-21 01:47:35,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 742 states have (on average 1.8221024258760108) internal successors, (1352), 1108 states have internal predecessors, (1352), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:47:35,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1358 transitions. [2021-11-21 01:47:35,509 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1358 transitions. Word has length 60 [2021-11-21 01:47:35,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:35,510 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 1358 transitions. [2021-11-21 01:47:35,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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) [2021-11-21 01:47:35,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1358 transitions. [2021-11-21 01:47:35,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-21 01:47:35,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:35,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:35,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:35,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:47:35,725 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-21 01:47:35,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:35,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-21 01:47:35,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:47:35,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979116821] [2021-11-21 01:47:35,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:35,727 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:47:35,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:47:35,727 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:47:35,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-21 01:47:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:35,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:47:35,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:36,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:36,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:36,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-21 01:47:36,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:36,463 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:47:36,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979116821] [2021-11-21 01:47:36,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979116821] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:36,463 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:36,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:47:36,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452200717] [2021-11-21 01:47:36,463 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:36,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:47:36,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:47:36,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:47:36,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:47:36,465 INFO L87 Difference]: Start difference. First operand 1113 states and 1358 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-11-21 01:47:38,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:38,202 INFO L93 Difference]: Finished difference Result 1111 states and 1356 transitions. [2021-11-21 01:47:38,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:47:38,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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 62 [2021-11-21 01:47:38,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:38,207 INFO L225 Difference]: With dead ends: 1111 [2021-11-21 01:47:38,207 INFO L226 Difference]: Without dead ends: 1111 [2021-11-21 01:47:38,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:47:38,208 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 1732 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:38,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1735 Valid, 505 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-21 01:47:38,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2021-11-21 01:47:38,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1111. [2021-11-21 01:47:38,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 742 states have (on average 1.8194070080862534) internal successors, (1350), 1106 states have internal predecessors, (1350), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:47:38,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1356 transitions. [2021-11-21 01:47:38,230 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1356 transitions. Word has length 62 [2021-11-21 01:47:38,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:38,230 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 1356 transitions. [2021-11-21 01:47:38,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-11-21 01:47:38,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1356 transitions. [2021-11-21 01:47:38,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-21 01:47:38,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:38,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:38,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:38,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:47:38,453 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-21 01:47:38,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:38,453 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-21 01:47:38,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:47:38,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750462418] [2021-11-21 01:47:38,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:38,454 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:47:38,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:47:38,455 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:47:38,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-21 01:47:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:38,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:47:38,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:38,734 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 [2021-11-21 01:47:38,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:47:38,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:47:38,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:38,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:38,941 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:47:38,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750462418] [2021-11-21 01:47:38,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750462418] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:38,941 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:38,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 01:47:38,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609272735] [2021-11-21 01:47:38,942 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:38,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:47:38,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:47:38,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:47:38,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:47:38,943 INFO L87 Difference]: Start difference. First operand 1111 states and 1356 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-11-21 01:47:41,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:41,729 INFO L93 Difference]: Finished difference Result 1110 states and 1355 transitions. [2021-11-21 01:47:41,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:47:41,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-21 01:47:41,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:41,735 INFO L225 Difference]: With dead ends: 1110 [2021-11-21 01:47:41,735 INFO L226 Difference]: Without dead ends: 1110 [2021-11-21 01:47:41,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:47:41,736 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 4 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:41,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2257 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-21 01:47:41,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-11-21 01:47:41,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2021-11-21 01:47:41,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 742 states have (on average 1.8180592991913747) internal successors, (1349), 1105 states have internal predecessors, (1349), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:47:41,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1355 transitions. [2021-11-21 01:47:41,756 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1355 transitions. Word has length 65 [2021-11-21 01:47:41,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:41,757 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 1355 transitions. [2021-11-21 01:47:41,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-11-21 01:47:41,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1355 transitions. [2021-11-21 01:47:41,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-21 01:47:41,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:41,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:41,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:41,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:47:41,975 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-21 01:47:41,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:41,976 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-21 01:47:41,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:47:41,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28448396] [2021-11-21 01:47:41,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:41,976 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:47:41,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:47:41,977 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:47:41,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-21 01:47:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:42,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:47:42,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:42,270 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 [2021-11-21 01:47:42,292 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 [2021-11-21 01:47:42,303 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 [2021-11-21 01:47:42,396 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 [2021-11-21 01:47:42,401 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 [2021-11-21 01:47:42,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:42,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:42,711 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:47:42,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28448396] [2021-11-21 01:47:42,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28448396] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:42,711 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:42,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-21 01:47:42,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003619305] [2021-11-21 01:47:42,712 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:42,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:47:42,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:47:42,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:47:42,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:47:42,713 INFO L87 Difference]: Start difference. First operand 1110 states and 1355 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2021-11-21 01:47:51,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:51,017 INFO L93 Difference]: Finished difference Result 1109 states and 1354 transitions. [2021-11-21 01:47:51,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:47:51,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-21 01:47:51,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:51,023 INFO L225 Difference]: With dead ends: 1109 [2021-11-21 01:47:51,024 INFO L226 Difference]: Without dead ends: 1109 [2021-11-21 01:47:51,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:47:51,025 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 2 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 2105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3213 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:51,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3213 Invalid, 2107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2105 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2021-11-21 01:47:51,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-11-21 01:47:51,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1109. [2021-11-21 01:47:51,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 741 states have (on average 1.8191632928475034) internal successors, (1348), 1104 states have internal predecessors, (1348), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:47:51,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1354 transitions. [2021-11-21 01:47:51,045 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1354 transitions. Word has length 65 [2021-11-21 01:47:51,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:51,045 INFO L470 AbstractCegarLoop]: Abstraction has 1109 states and 1354 transitions. [2021-11-21 01:47:51,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2021-11-21 01:47:51,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1354 transitions. [2021-11-21 01:47:51,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-21 01:47:51,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:51,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:51,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:51,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:47:51,260 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-21 01:47:51,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:51,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1702947151, now seen corresponding path program 1 times [2021-11-21 01:47:51,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:47:51,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128363244] [2021-11-21 01:47:51,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:51,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:47:51,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:47:51,262 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:47:51,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-21 01:47:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:51,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:47:51,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:51,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:51,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:51,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:51,729 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:47:51,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128363244] [2021-11-21 01:47:51,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1128363244] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:51,729 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:51,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 01:47:51,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637309041] [2021-11-21 01:47:51,729 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:51,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:47:51,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:47:51,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:47:51,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:47:51,731 INFO L87 Difference]: Start difference. First operand 1109 states and 1354 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:47:51,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:51,817 INFO L93 Difference]: Finished difference Result 1119 states and 1367 transitions. [2021-11-21 01:47:51,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:47:51,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-21 01:47:51,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:51,827 INFO L225 Difference]: With dead ends: 1119 [2021-11-21 01:47:51,827 INFO L226 Difference]: Without dead ends: 1119 [2021-11-21 01:47:51,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:47:51,828 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 11 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:51,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1773 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:47:51,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-11-21 01:47:51,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1119. [2021-11-21 01:47:51,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 749 states have (on average 1.8157543391188251) internal successors, (1360), 1113 states have internal predecessors, (1360), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-21 01:47:51,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1367 transitions. [2021-11-21 01:47:51,854 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1367 transitions. Word has length 73 [2021-11-21 01:47:51,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:51,854 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 1367 transitions. [2021-11-21 01:47:51,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:47:51,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1367 transitions. [2021-11-21 01:47:51,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-21 01:47:51,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:51,856 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:51,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:52,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:47:52,074 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-21 01:47:52,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:52,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1510574161, now seen corresponding path program 1 times [2021-11-21 01:47:52,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:47:52,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10439196] [2021-11-21 01:47:52,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:52,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:47:52,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:47:52,076 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:47:52,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-21 01:47:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:52,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:47:52,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:52,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:52,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:52,749 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:47:52,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10439196] [2021-11-21 01:47:52,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10439196] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:47:52,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1438067702] [2021-11-21 01:47:52,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:52,750 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:47:52,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:47:52,756 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:47:52,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-21 01:47:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:53,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:47:53,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:53,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:53,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1438067702] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:47:53,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676746535] [2021-11-21 01:47:53,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:53,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:47:53,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:47:53,442 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:47:53,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-21 01:47:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:53,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:47:53,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:53,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:53,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:54,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676746535] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:47:54,065 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:47:54,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-21 01:47:54,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067641611] [2021-11-21 01:47:54,065 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:47:54,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:47:54,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:47:54,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:47:54,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:47:54,067 INFO L87 Difference]: Start difference. First operand 1119 states and 1367 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 01:47:54,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:54,575 INFO L93 Difference]: Finished difference Result 1133 states and 1384 transitions. [2021-11-21 01:47:54,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 01:47:54,576 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2021-11-21 01:47:54,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:54,581 INFO L225 Difference]: With dead ends: 1133 [2021-11-21 01:47:54,582 INFO L226 Difference]: Without dead ends: 1127 [2021-11-21 01:47:54,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-21 01:47:54,583 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 33 mSDsluCounter, 4412 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 5299 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:54,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 5299 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:47:54,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2021-11-21 01:47:54,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1125. [2021-11-21 01:47:54,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 755 states have (on average 1.8105960264900662) internal successors, (1367), 1119 states have internal predecessors, (1367), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-21 01:47:54,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1374 transitions. [2021-11-21 01:47:54,614 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1374 transitions. Word has length 75 [2021-11-21 01:47:54,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:54,615 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 1374 transitions. [2021-11-21 01:47:54,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 01:47:54,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1374 transitions. [2021-11-21 01:47:54,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-21 01:47:54,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:54,616 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:54,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:54,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:55,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-21 01:47:55,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:47:55,234 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-21 01:47:55,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:55,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1938377839, now seen corresponding path program 2 times [2021-11-21 01:47:55,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:47:55,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695488692] [2021-11-21 01:47:55,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:47:55,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:47:55,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:47:55,236 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:47:55,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-21 01:47:55,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:47:55,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:47:55,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:47:55,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:55,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:56,427 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:56,428 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:47:56,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695488692] [2021-11-21 01:47:56,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695488692] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:47:56,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1074620532] [2021-11-21 01:47:56,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:47:56,428 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:47:56,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:47:56,440 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:47:56,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-21 01:47:57,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:47:57,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:47:57,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:47:57,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:57,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:57,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1074620532] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:47:57,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772938778] [2021-11-21 01:47:57,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:47:57,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:47:57,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:47:57,554 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:47:57,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-21 01:48:28,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:48:28,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:48:28,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 01:48:28,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:48:29,133 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:29,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:48:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:29,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772938778] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:48:29,733 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:48:29,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 26 [2021-11-21 01:48:29,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308734504] [2021-11-21 01:48:29,733 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:48:29,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-21 01:48:29,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:48:29,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-21 01:48:29,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:48:29,735 INFO L87 Difference]: Start difference. First operand 1125 states and 1374 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 01:48:31,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:31,507 INFO L93 Difference]: Finished difference Result 1151 states and 1409 transitions. [2021-11-21 01:48:31,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-21 01:48:31,507 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-21 01:48:31,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:31,530 INFO L225 Difference]: With dead ends: 1151 [2021-11-21 01:48:31,531 INFO L226 Difference]: Without dead ends: 1145 [2021-11-21 01:48:31,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=706, Invalid=1364, Unknown=0, NotChecked=0, Total=2070 [2021-11-21 01:48:31,533 INFO L933 BasicCegarLoop]: 890 mSDtfsCounter, 84 mSDsluCounter, 7970 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 8860 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:31,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 8860 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:48:31,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2021-11-21 01:48:31,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1137. [2021-11-21 01:48:31,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 767 states have (on average 1.801825293350717) internal successors, (1382), 1131 states have internal predecessors, (1382), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-21 01:48:31,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1389 transitions. [2021-11-21 01:48:31,556 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1389 transitions. Word has length 79 [2021-11-21 01:48:31,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:31,557 INFO L470 AbstractCegarLoop]: Abstraction has 1137 states and 1389 transitions. [2021-11-21 01:48:31,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 01:48:31,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1389 transitions. [2021-11-21 01:48:31,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-21 01:48:31,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:31,558 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:48:31,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-21 01:48:31,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-11-21 01:48:31,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2021-11-21 01:48:32,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 01:48:32,185 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-21 01:48:32,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:32,185 INFO L85 PathProgramCache]: Analyzing trace with hash -654977553, now seen corresponding path program 3 times [2021-11-21 01:48:32,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:48:32,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801072162] [2021-11-21 01:48:32,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:48:32,186 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:48:32,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:48:32,187 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:48:32,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-21 01:48:32,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-21 01:48:32,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:48:32,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 01:48:32,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:48:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:33,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:48:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:34,950 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:48:34,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801072162] [2021-11-21 01:48:34,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801072162] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:48:34,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2041837935] [2021-11-21 01:48:34,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:48:34,951 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:48:34,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:48:34,957 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:48:34,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-21 01:48:36,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-21 01:48:36,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:48:37,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 01:48:37,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:48:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:37,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:48:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:37,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2041837935] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:48:37,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355208] [2021-11-21 01:48:37,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:48:37,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:48:37,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:48:37,726 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:48:37,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033aef29-eafb-40c7-a08a-7bbf60d509cc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process