./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7 --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 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:11:54,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:11:54,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:11:54,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:11:54,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:11:54,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:11:54,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:11:54,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:11:54,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:11:54,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:11:54,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:11:54,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:11:54,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:11:54,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:11:54,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:11:54,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:11:54,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:11:54,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:11:54,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:11:54,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:11:54,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:11:54,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:11:54,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:11:54,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:11:54,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:11:54,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:11:54,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:11:54,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:11:54,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:11:54,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:11:54,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:11:54,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:11:54,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:11:54,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:11:54,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:11:54,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:11:54,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:11:54,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:11:54,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:11:54,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:11:54,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:11:54,177 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-25 19:11:54,230 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:11:54,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:11:54,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:11:54,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:11:54,232 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:11:54,232 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:11:54,232 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:11:54,233 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:11:54,233 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:11:54,233 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:11:54,234 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:11:54,235 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:11:54,235 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:11:54,235 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:11:54,235 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:11:54,236 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:11:54,236 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:11:54,236 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:11:54,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 19:11:54,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 19:11:54,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:11:54,237 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:11:54,238 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 19:11:54,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:11:54,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:11:54,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:11:54,238 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 19:11:54,239 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 19:11:54,239 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 19:11:54,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:11:54,239 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:11:54,240 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:11:54,240 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:11:54,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:11:54,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:11:54,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:11:54,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:11:54,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:11:54,241 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:11:54,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:11:54,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:11:54,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:11:54,244 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_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 [2021-11-25 19:11:54,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:11:54,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:11:54,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:11:54,516 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:11:54,517 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:11:54,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2021-11-25 19:11:54,603 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/data/8b4e178d5/5b44124d709d434aad1eedadf8b62bb6/FLAG96f2d86c6 [2021-11-25 19:11:55,262 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:11:55,262 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2021-11-25 19:11:55,297 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/data/8b4e178d5/5b44124d709d434aad1eedadf8b62bb6/FLAG96f2d86c6 [2021-11-25 19:11:55,462 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/data/8b4e178d5/5b44124d709d434aad1eedadf8b62bb6 [2021-11-25 19:11:55,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:11:55,466 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:11:55,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:11:55,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:11:55,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:11:55,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:11:55" (1/1) ... [2021-11-25 19:11:55,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a83bb09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:55, skipping insertion in model container [2021-11-25 19:11:55,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:11:55" (1/1) ... [2021-11-25 19:11:55,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:11:55,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:11:56,005 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_9b344599-5367-4dcb-9ff5-0b661d9f7719/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i[33021,33034] [2021-11-25 19:11:56,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:11:56,228 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) [2021-11-25 19:11:56,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2fdbabe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:56, skipping insertion in model container [2021-11-25 19:11:56,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:11:56,230 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-25 19:11:56,232 INFO L158 Benchmark]: Toolchain (without parser) took 764.31ms. Allocated memory is still 127.9MB. Free memory was 95.0MB in the beginning and 88.7MB in the end (delta: 6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:11:56,233 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 127.9MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:11:56,234 INFO L158 Benchmark]: CACSL2BoogieTranslator took 761.65ms. Allocated memory is still 127.9MB. Free memory was 94.7MB in the beginning and 88.7MB in the end (delta: 6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:11:56,237 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 127.9MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 761.65ms. Allocated memory is still 127.9MB. Free memory was 94.7MB in the beginning and 88.7MB in the end (delta: 6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7 --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 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:11:58,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:11:58,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:11:58,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:11:58,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:11:58,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:11:58,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:11:58,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:11:58,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:11:58,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:11:58,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:11:58,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:11:58,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:11:58,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:11:58,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:11:58,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:11:58,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:11:58,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:11:58,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:11:58,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:11:58,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:11:58,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:11:58,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:11:58,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:11:58,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:11:58,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:11:58,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:11:59,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:11:59,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:11:59,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:11:59,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:11:59,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:11:59,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:11:59,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:11:59,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:11:59,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:11:59,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:11:59,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:11:59,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:11:59,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:11:59,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:11:59,020 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-25 19:11:59,074 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:11:59,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:11:59,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:11:59,076 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:11:59,077 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:11:59,077 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:11:59,077 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:11:59,078 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:11:59,078 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:11:59,078 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:11:59,079 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:11:59,080 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:11:59,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 19:11:59,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 19:11:59,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:11:59,082 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:11:59,082 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 19:11:59,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:11:59,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:11:59,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:11:59,083 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 19:11:59,084 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 19:11:59,084 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 19:11:59,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:11:59,084 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:11:59,085 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:11:59,085 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:11:59,085 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:11:59,085 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:11:59,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:11:59,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:11:59,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:11:59,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:11:59,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:11:59,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:11:59,088 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:11:59,088 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:11:59,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:11:59,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:11:59,089 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_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 [2021-11-25 19:11:59,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:11:59,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:11:59,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:11:59,540 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:11:59,541 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:11:59,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2021-11-25 19:11:59,630 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/data/89956508f/88e64222e1d7460b9f3abb6ff16ca598/FLAG84761abac [2021-11-25 19:12:00,386 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:12:00,387 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2021-11-25 19:12:00,419 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/data/89956508f/88e64222e1d7460b9f3abb6ff16ca598/FLAG84761abac [2021-11-25 19:12:00,543 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/data/89956508f/88e64222e1d7460b9f3abb6ff16ca598 [2021-11-25 19:12:00,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:12:00,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:12:00,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:12:00,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:12:00,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:12:00,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:12:00" (1/1) ... [2021-11-25 19:12:00,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b7bc8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:00, skipping insertion in model container [2021-11-25 19:12:00,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:12:00" (1/1) ... [2021-11-25 19:12:00,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:12:00,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:12:01,327 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_9b344599-5367-4dcb-9ff5-0b661d9f7719/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i[33021,33034] [2021-11-25 19:12:01,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:12:01,561 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-25 19:12:01,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:12:01,614 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_9b344599-5367-4dcb-9ff5-0b661d9f7719/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i[33021,33034] [2021-11-25 19:12:01,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:12:01,749 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:12:01,784 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_9b344599-5367-4dcb-9ff5-0b661d9f7719/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i[33021,33034] [2021-11-25 19:12:01,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:12:01,930 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:12:01,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:01 WrapperNode [2021-11-25 19:12:01,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:12:01,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:12:01,932 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:12:01,932 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:12:01,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:01" (1/1) ... [2021-11-25 19:12:01,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:01" (1/1) ... [2021-11-25 19:12:02,082 INFO L137 Inliner]: procedures = 180, calls = 349, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1166 [2021-11-25 19:12:02,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:12:02,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:12:02,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:12:02,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:12:02,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:01" (1/1) ... [2021-11-25 19:12:02,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:01" (1/1) ... [2021-11-25 19:12:02,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:01" (1/1) ... [2021-11-25 19:12:02,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:01" (1/1) ... [2021-11-25 19:12:02,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:01" (1/1) ... [2021-11-25 19:12:02,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:01" (1/1) ... [2021-11-25 19:12:02,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:01" (1/1) ... [2021-11-25 19:12:02,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:12:02,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:12:02,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:12:02,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:12:02,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:01" (1/1) ... [2021-11-25 19:12:02,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:12:02,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:02,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:12:02,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:12:02,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-25 19:12:02,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 19:12:02,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:12:02,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:12:02,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:12:02,332 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:12:02,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:12:02,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:12:02,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:12:02,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:12:02,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:12:02,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:12:02,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 19:12:02,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:12:02,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:12:02,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:12:02,603 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:12:02,605 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:12:02,610 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 19:12:09,455 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:12:09,485 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:12:09,486 INFO L301 CfgBuilder]: Removed 60 assume(true) statements. [2021-11-25 19:12:09,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:12:09 BoogieIcfgContainer [2021-11-25 19:12:09,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:12:09,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:12:09,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:12:09,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:12:09,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:12:00" (1/3) ... [2021-11-25 19:12:09,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8c918f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:12:09, skipping insertion in model container [2021-11-25 19:12:09,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:01" (2/3) ... [2021-11-25 19:12:09,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8c918f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:12:09, skipping insertion in model container [2021-11-25 19:12:09,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:12:09" (3/3) ... [2021-11-25 19:12:09,500 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-1.i [2021-11-25 19:12:09,506 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:12:09,507 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 648 error locations. [2021-11-25 19:12:09,561 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:12:09,570 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 [2021-11-25 19:12:09,570 INFO L340 AbstractCegarLoop]: Starting to check reachability of 648 error locations. [2021-11-25 19:12:09,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 1274 states, 613 states have (on average 2.257748776508972) internal successors, (1384), 1265 states have internal predecessors, (1384), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 19:12:09,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:12:09,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:09,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:12:09,623 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 19:12:09,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:09,630 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-11-25 19:12:09,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:09,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961112133] [2021-11-25 19:12:09,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:09,647 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:09,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:09,651 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:09,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:12:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:09,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 19:12:09,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:09,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:12:09,923 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:09,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961112133] [2021-11-25 19:12:09,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961112133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:09,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:09,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:12:09,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329255488] [2021-11-25 19:12:09,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:09,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:12:09,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:09,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:12:09,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:12:09,969 INFO L87 Difference]: Start difference. First operand has 1274 states, 613 states have (on average 2.257748776508972) internal successors, (1384), 1265 states have internal predecessors, (1384), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:10,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:10,160 INFO L93 Difference]: Finished difference Result 1256 states and 1330 transitions. [2021-11-25 19:12:10,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:12:10,163 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 19:12:10,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:10,195 INFO L225 Difference]: With dead ends: 1256 [2021-11-25 19:12:10,195 INFO L226 Difference]: Without dead ends: 1254 [2021-11-25 19:12:10,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:12:10,202 INFO L933 BasicCegarLoop]: 1330 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:10,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:12:10,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-11-25 19:12:10,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1254. [2021-11-25 19:12:10,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 604 states have (on average 2.1456953642384105) internal successors, (1296), 1245 states have internal predecessors, (1296), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 19:12:10,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1328 transitions. [2021-11-25 19:12:10,331 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1328 transitions. Word has length 5 [2021-11-25 19:12:10,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:10,332 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 1328 transitions. [2021-11-25 19:12:10,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:10,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1328 transitions. [2021-11-25 19:12:10,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:12:10,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:10,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:12:10,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:10,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:10,534 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 19:12:10,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:10,535 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-11-25 19:12:10,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:10,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317159781] [2021-11-25 19:12:10,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:10,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:10,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:10,538 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:10,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 19:12:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:10,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:12:10,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:10,777 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 [2021-11-25 19:12:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:10,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:12:10,800 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:10,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317159781] [2021-11-25 19:12:10,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317159781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:10,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:10,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:12:10,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592686053] [2021-11-25 19:12:10,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:10,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:12:10,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:10,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:12:10,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:12:10,820 INFO L87 Difference]: Start difference. First operand 1254 states and 1328 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:14,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:14,035 INFO L93 Difference]: Finished difference Result 1291 states and 1378 transitions. [2021-11-25 19:12:14,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:12:14,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 19:12:14,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:14,045 INFO L225 Difference]: With dead ends: 1291 [2021-11-25 19:12:14,045 INFO L226 Difference]: Without dead ends: 1291 [2021-11-25 19:12:14,046 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 [2021-11-25 19:12:14,048 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 1159 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:14,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 704 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-25 19:12:14,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-11-25 19:12:14,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1237. [2021-11-25 19:12:14,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 680 states have (on average 1.9676470588235293) internal successors, (1338), 1228 states have internal predecessors, (1338), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 19:12:14,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1370 transitions. [2021-11-25 19:12:14,097 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1370 transitions. Word has length 5 [2021-11-25 19:12:14,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:14,097 INFO L470 AbstractCegarLoop]: Abstraction has 1237 states and 1370 transitions. [2021-11-25 19:12:14,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:14,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1370 transitions. [2021-11-25 19:12:14,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:12:14,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:14,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:12:14,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:14,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:14,311 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 19:12:14,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:14,312 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-11-25 19:12:14,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:14,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331272341] [2021-11-25 19:12:14,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:14,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:14,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:14,314 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:14,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 19:12:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:14,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:12:14,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:14,486 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 [2021-11-25 19:12:14,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:14,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:12:14,516 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:14,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331272341] [2021-11-25 19:12:14,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331272341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:14,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:14,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:12:14,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533829526] [2021-11-25 19:12:14,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:14,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:12:14,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:14,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:12:14,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:12:14,520 INFO L87 Difference]: Start difference. First operand 1237 states and 1370 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:18,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:18,264 INFO L93 Difference]: Finished difference Result 1540 states and 1693 transitions. [2021-11-25 19:12:18,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:12:18,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 19:12:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:18,275 INFO L225 Difference]: With dead ends: 1540 [2021-11-25 19:12:18,275 INFO L226 Difference]: Without dead ends: 1540 [2021-11-25 19:12:18,275 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 [2021-11-25 19:12:18,277 INFO L933 BasicCegarLoop]: 996 mSDtfsCounter, 504 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:18,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 1483 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-25 19:12:18,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2021-11-25 19:12:18,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1393. [2021-11-25 19:12:18,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 846 states have (on average 1.9432624113475176) internal successors, (1644), 1384 states have internal predecessors, (1644), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 19:12:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1676 transitions. [2021-11-25 19:12:18,326 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1676 transitions. Word has length 5 [2021-11-25 19:12:18,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:18,326 INFO L470 AbstractCegarLoop]: Abstraction has 1393 states and 1676 transitions. [2021-11-25 19:12:18,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:18,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1676 transitions. [2021-11-25 19:12:18,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 19:12:18,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:18,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 19:12:18,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:18,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:18,538 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 19:12:18,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:18,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2021-11-25 19:12:18,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:18,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897307934] [2021-11-25 19:12:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:18,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:18,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:18,541 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:18,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 19:12:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:18,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:12:18,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:18,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:18,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:12:18,675 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:18,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897307934] [2021-11-25 19:12:18,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897307934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:18,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:18,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:12:18,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575161442] [2021-11-25 19:12:18,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:18,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:12:18,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:18,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:12:18,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:12:18,685 INFO L87 Difference]: Start difference. First operand 1393 states and 1676 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:18,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:18,811 INFO L93 Difference]: Finished difference Result 2737 states and 3283 transitions. [2021-11-25 19:12:18,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:12:18,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 19:12:18,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:18,835 INFO L225 Difference]: With dead ends: 2737 [2021-11-25 19:12:18,835 INFO L226 Difference]: Without dead ends: 2737 [2021-11-25 19:12:18,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:12:18,838 INFO L933 BasicCegarLoop]: 1675 mSDtfsCounter, 1143 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:18,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 2894 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:12:18,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2021-11-25 19:12:18,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 1394. [2021-11-25 19:12:18,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 847 states have (on average 1.9421487603305785) internal successors, (1645), 1385 states have internal predecessors, (1645), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 19:12:18,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1677 transitions. [2021-11-25 19:12:18,917 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1677 transitions. Word has length 6 [2021-11-25 19:12:18,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:18,917 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 1677 transitions. [2021-11-25 19:12:18,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:18,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1677 transitions. [2021-11-25 19:12:18,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 19:12:18,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:18,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:18,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:19,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:19,142 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 19:12:19,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:19,143 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-11-25 19:12:19,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:19,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594079167] [2021-11-25 19:12:19,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:19,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:19,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:19,145 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:19,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 19:12:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:19,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:12:19,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:19,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:19,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:12:19,378 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:19,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594079167] [2021-11-25 19:12:19,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594079167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:19,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:19,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:12:19,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527105861] [2021-11-25 19:12:19,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:19,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:12:19,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:19,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:12:19,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:12:19,381 INFO L87 Difference]: Start difference. First operand 1394 states and 1677 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-11-25 19:12:19,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:19,435 INFO L93 Difference]: Finished difference Result 1358 states and 1640 transitions. [2021-11-25 19:12:19,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:12:19,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2021-11-25 19:12:19,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:19,447 INFO L225 Difference]: With dead ends: 1358 [2021-11-25 19:12:19,448 INFO L226 Difference]: Without dead ends: 1358 [2021-11-25 19:12:19,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:12:19,449 INFO L933 BasicCegarLoop]: 1177 mSDtfsCounter, 1137 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:19,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1153 Valid, 1210 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:12:19,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2021-11-25 19:12:19,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1352. [2021-11-25 19:12:19,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 829 states have (on average 1.9324487334137515) internal successors, (1602), 1343 states have internal predecessors, (1602), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 19:12:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1634 transitions. [2021-11-25 19:12:19,510 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1634 transitions. Word has length 11 [2021-11-25 19:12:19,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:19,511 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 1634 transitions. [2021-11-25 19:12:19,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-11-25 19:12:19,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1634 transitions. [2021-11-25 19:12:19,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 19:12:19,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:19,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:19,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:19,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:19,725 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 19:12:19,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:19,728 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-11-25 19:12:19,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:19,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446942330] [2021-11-25 19:12:19,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:19,729 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:19,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:19,730 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:19,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 19:12:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:19,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:12:19,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:19,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:19,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:12:19,966 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:19,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446942330] [2021-11-25 19:12:19,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446942330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:19,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:19,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:12:19,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761276106] [2021-11-25 19:12:19,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:19,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:12:19,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:19,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:12:19,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:12:19,969 INFO L87 Difference]: Start difference. First operand 1352 states and 1634 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:20,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:20,083 INFO L93 Difference]: Finished difference Result 1337 states and 1612 transitions. [2021-11-25 19:12:20,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:12:20,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-25 19:12:20,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:20,094 INFO L225 Difference]: With dead ends: 1337 [2021-11-25 19:12:20,095 INFO L226 Difference]: Without dead ends: 1337 [2021-11-25 19:12:20,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:12:20,097 INFO L933 BasicCegarLoop]: 1132 mSDtfsCounter, 1108 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:20,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 2290 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:12:20,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2021-11-25 19:12:20,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1330. [2021-11-25 19:12:20,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 821 states have (on average 1.9159561510353227) internal successors, (1573), 1321 states have internal predecessors, (1573), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 19:12:20,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1605 transitions. [2021-11-25 19:12:20,140 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1605 transitions. Word has length 13 [2021-11-25 19:12:20,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:20,141 INFO L470 AbstractCegarLoop]: Abstraction has 1330 states and 1605 transitions. [2021-11-25 19:12:20,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:20,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1605 transitions. [2021-11-25 19:12:20,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 19:12:20,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:20,144 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] [2021-11-25 19:12:20,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:20,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:20,357 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 19:12:20,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:20,358 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-11-25 19:12:20,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:20,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068892386] [2021-11-25 19:12:20,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:20,358 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:20,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:20,359 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:20,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-25 19:12:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:20,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:12:20,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:20,553 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 [2021-11-25 19:12:20,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:20,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:12:20,676 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:20,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068892386] [2021-11-25 19:12:20,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068892386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:20,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:20,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:12:20,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698280763] [2021-11-25 19:12:20,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:20,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:12:20,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:20,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:12:20,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:12:20,680 INFO L87 Difference]: Start difference. First operand 1330 states and 1605 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:24,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:24,728 INFO L93 Difference]: Finished difference Result 1791 states and 2054 transitions. [2021-11-25 19:12:24,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:12:24,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-25 19:12:24,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:24,742 INFO L225 Difference]: With dead ends: 1791 [2021-11-25 19:12:24,743 INFO L226 Difference]: Without dead ends: 1791 [2021-11-25 19:12:24,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:12:24,744 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 2394 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2407 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:24,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2407 Valid, 1007 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-25 19:12:24,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-11-25 19:12:24,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1326. [2021-11-25 19:12:24,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 821 states have (on average 1.9110840438489647) internal successors, (1569), 1317 states have internal predecessors, (1569), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 19:12:24,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1601 transitions. [2021-11-25 19:12:24,822 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1601 transitions. Word has length 27 [2021-11-25 19:12:24,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:24,823 INFO L470 AbstractCegarLoop]: Abstraction has 1326 states and 1601 transitions. [2021-11-25 19:12:24,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:24,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1601 transitions. [2021-11-25 19:12:24,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 19:12:24,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:24,825 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] [2021-11-25 19:12:24,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:25,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:25,038 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 19:12:25,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:25,038 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2021-11-25 19:12:25,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:25,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703796256] [2021-11-25 19:12:25,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:25,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:25,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:25,040 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:25,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 19:12:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:25,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:12:25,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:25,215 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 [2021-11-25 19:12:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:25,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:12:25,454 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:25,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703796256] [2021-11-25 19:12:25,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703796256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:25,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:25,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:12:25,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020238161] [2021-11-25 19:12:25,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:25,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:12:25,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:25,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:12:25,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:12:25,456 INFO L87 Difference]: Start difference. First operand 1326 states and 1601 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:29,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:29,836 INFO L93 Difference]: Finished difference Result 1510 states and 1675 transitions. [2021-11-25 19:12:29,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:12:29,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-25 19:12:29,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:29,846 INFO L225 Difference]: With dead ends: 1510 [2021-11-25 19:12:29,846 INFO L226 Difference]: Without dead ends: 1510 [2021-11-25 19:12:29,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:12:29,848 INFO L933 BasicCegarLoop]: 956 mSDtfsCounter, 851 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1923 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:29,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 1923 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-25 19:12:29,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2021-11-25 19:12:29,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1322. [2021-11-25 19:12:29,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 821 states have (on average 1.9062119366626067) internal successors, (1565), 1313 states have internal predecessors, (1565), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 19:12:29,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1597 transitions. [2021-11-25 19:12:29,890 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1597 transitions. Word has length 27 [2021-11-25 19:12:29,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:29,891 INFO L470 AbstractCegarLoop]: Abstraction has 1322 states and 1597 transitions. [2021-11-25 19:12:29,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:29,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1597 transitions. [2021-11-25 19:12:29,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-25 19:12:29,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:29,893 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] [2021-11-25 19:12:29,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:30,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:30,107 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 19:12:30,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:30,108 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2021-11-25 19:12:30,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:30,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130674800] [2021-11-25 19:12:30,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:30,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:30,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:30,110 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:30,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-25 19:12:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:30,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:12:30,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:30,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:30,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:12:30,465 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:30,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130674800] [2021-11-25 19:12:30,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130674800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:30,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:30,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:12:30,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916790525] [2021-11-25 19:12:30,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:30,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:12:30,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:30,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:12:30,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:12:30,469 INFO L87 Difference]: Start difference. First operand 1322 states and 1597 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:30,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:30,548 INFO L93 Difference]: Finished difference Result 1322 states and 1593 transitions. [2021-11-25 19:12:30,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:12:30,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-25 19:12:30,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:30,558 INFO L225 Difference]: With dead ends: 1322 [2021-11-25 19:12:30,559 INFO L226 Difference]: Without dead ends: 1322 [2021-11-25 19:12:30,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:12:30,562 INFO L933 BasicCegarLoop]: 1126 mSDtfsCounter, 1084 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 2268 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 [2021-11-25 19:12:30,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 2268 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:12:30,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2021-11-25 19:12:30,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1316. [2021-11-25 19:12:30,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 815 states have (on average 1.9079754601226995) internal successors, (1555), 1307 states have internal predecessors, (1555), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 19:12:30,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1587 transitions. [2021-11-25 19:12:30,623 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1587 transitions. Word has length 42 [2021-11-25 19:12:30,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:30,626 INFO L470 AbstractCegarLoop]: Abstraction has 1316 states and 1587 transitions. [2021-11-25 19:12:30,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:30,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1587 transitions. [2021-11-25 19:12:30,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 19:12:30,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:30,632 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] [2021-11-25 19:12:30,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:30,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:30,852 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 19:12:30,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:30,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2021-11-25 19:12:30,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:30,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10964598] [2021-11-25 19:12:30,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:30,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:30,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:30,854 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:30,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-25 19:12:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:31,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:12:31,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:31,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:31,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:12:31,449 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:31,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10964598] [2021-11-25 19:12:31,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10964598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:31,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:31,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:12:31,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192610377] [2021-11-25 19:12:31,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:31,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:12:31,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:31,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:12:31,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:12:31,452 INFO L87 Difference]: Start difference. First operand 1316 states and 1587 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:31,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:31,535 INFO L93 Difference]: Finished difference Result 1362 states and 1633 transitions. [2021-11-25 19:12:31,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:12:31,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-25 19:12:31,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:31,545 INFO L225 Difference]: With dead ends: 1362 [2021-11-25 19:12:31,545 INFO L226 Difference]: Without dead ends: 1362 [2021-11-25 19:12:31,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:12:31,547 INFO L933 BasicCegarLoop]: 1134 mSDtfsCounter, 67 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:31,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 2173 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:12:31,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-11-25 19:12:31,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1362. [2021-11-25 19:12:31,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 861 states have (on average 1.859465737514518) internal successors, (1601), 1353 states have internal predecessors, (1601), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 19:12:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1633 transitions. [2021-11-25 19:12:31,584 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1633 transitions. Word has length 50 [2021-11-25 19:12:31,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:31,585 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 1633 transitions. [2021-11-25 19:12:31,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:31,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1633 transitions. [2021-11-25 19:12:31,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-25 19:12:31,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:31,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:31,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:31,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:31,802 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 19:12:31,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:31,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2021-11-25 19:12:31,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:31,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747330993] [2021-11-25 19:12:31,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:31,804 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:31,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:31,805 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:31,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-25 19:12:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:32,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:12:32,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:32,233 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 [2021-11-25 19:12:32,243 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 [2021-11-25 19:12:32,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:32,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:12:32,864 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:12:32,864 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 17 treesize of output 17 [2021-11-25 19:12:32,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:32,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:12:32,886 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:32,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747330993] [2021-11-25 19:12:32,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747330993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:32,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:32,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:12:32,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103101710] [2021-11-25 19:12:32,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:32,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:12:32,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:32,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:12:32,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:12:32,889 INFO L87 Difference]: Start difference. First operand 1362 states and 1633 transitions. Second operand has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:35,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:35,368 INFO L93 Difference]: Finished difference Result 1331 states and 1556 transitions. [2021-11-25 19:12:35,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:12:35,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-25 19:12:35,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:35,375 INFO L225 Difference]: With dead ends: 1331 [2021-11-25 19:12:35,375 INFO L226 Difference]: Without dead ends: 1331 [2021-11-25 19:12:35,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:12:35,377 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 2001 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:35,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2007 Valid, 477 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 19:12:35,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2021-11-25 19:12:35,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1112. [2021-11-25 19:12:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 695 states have (on average 1.7266187050359711) internal successors, (1200), 1103 states have internal predecessors, (1200), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 19:12:35,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1232 transitions. [2021-11-25 19:12:35,401 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1232 transitions. Word has length 53 [2021-11-25 19:12:35,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:35,401 INFO L470 AbstractCegarLoop]: Abstraction has 1112 states and 1232 transitions. [2021-11-25 19:12:35,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:35,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1232 transitions. [2021-11-25 19:12:35,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 19:12:35,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:35,403 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] [2021-11-25 19:12:35,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:35,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:35,616 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 19:12:35,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:35,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2021-11-25 19:12:35,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:35,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513624344] [2021-11-25 19:12:35,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:35,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:35,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:35,620 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:35,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-25 19:12:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:35,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:12:35,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:36,045 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 [2021-11-25 19:12:36,064 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 [2021-11-25 19:12:36,099 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 27 treesize of output 15 [2021-11-25 19:12:36,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:36,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:12:36,115 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:36,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513624344] [2021-11-25 19:12:36,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513624344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:36,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:36,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:12:36,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668755921] [2021-11-25 19:12:36,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:36,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:12:36,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:36,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:12:36,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:12:36,119 INFO L87 Difference]: Start difference. First operand 1112 states and 1232 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:39,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:39,581 INFO L93 Difference]: Finished difference Result 1111 states and 1231 transitions. [2021-11-25 19:12:39,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:12:39,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-25 19:12:39,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:39,586 INFO L225 Difference]: With dead ends: 1111 [2021-11-25 19:12:39,586 INFO L226 Difference]: Without dead ends: 1111 [2021-11-25 19:12:39,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:12:39,587 INFO L933 BasicCegarLoop]: 1046 mSDtfsCounter, 4 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:39,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2649 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-25 19:12:39,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2021-11-25 19:12:39,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1111. [2021-11-25 19:12:39,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 695 states have (on average 1.725179856115108) internal successors, (1199), 1102 states have internal predecessors, (1199), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 19:12:39,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1231 transitions. [2021-11-25 19:12:39,609 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1231 transitions. Word has length 58 [2021-11-25 19:12:39,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:39,610 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 1231 transitions. [2021-11-25 19:12:39,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:39,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1231 transitions. [2021-11-25 19:12:39,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 19:12:39,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:39,611 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] [2021-11-25 19:12:39,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:39,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:39,825 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 19:12:39,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:39,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2021-11-25 19:12:39,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:39,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212410543] [2021-11-25 19:12:39,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:39,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:39,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:39,828 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:39,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-25 19:12:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:40,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:12:40,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:40,236 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 [2021-11-25 19:12:40,265 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 [2021-11-25 19:12:40,276 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 [2021-11-25 19:12:40,346 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 21 treesize of output 9 [2021-11-25 19:12:40,362 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 19 treesize of output 7 [2021-11-25 19:12:40,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:40,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:12:40,384 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:40,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212410543] [2021-11-25 19:12:40,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212410543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:40,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:40,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:12:40,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435473114] [2021-11-25 19:12:40,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:40,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:12:40,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:40,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:12:40,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:12:40,386 INFO L87 Difference]: Start difference. First operand 1111 states and 1231 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:44,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:44,208 INFO L93 Difference]: Finished difference Result 1110 states and 1230 transitions. [2021-11-25 19:12:44,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:12:44,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-25 19:12:44,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:44,214 INFO L225 Difference]: With dead ends: 1110 [2021-11-25 19:12:44,214 INFO L226 Difference]: Without dead ends: 1110 [2021-11-25 19:12:44,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:12:44,215 INFO L933 BasicCegarLoop]: 1046 mSDtfsCounter, 2 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:44,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2672 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-25 19:12:44,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-11-25 19:12:44,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2021-11-25 19:12:44,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 694 states have (on average 1.7262247838616716) internal successors, (1198), 1101 states have internal predecessors, (1198), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 19:12:44,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1230 transitions. [2021-11-25 19:12:44,239 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1230 transitions. Word has length 58 [2021-11-25 19:12:44,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:44,240 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 1230 transitions. [2021-11-25 19:12:44,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:44,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1230 transitions. [2021-11-25 19:12:44,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 19:12:44,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:44,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:44,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:44,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:44,457 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 19:12:44,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:44,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2041767774, now seen corresponding path program 1 times [2021-11-25 19:12:44,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:44,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077607434] [2021-11-25 19:12:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:44,459 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:44,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:44,460 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:44,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-25 19:12:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:44,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:12:44,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:44,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:44,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:12:44,894 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:44,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077607434] [2021-11-25 19:12:44,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077607434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:44,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:44,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:12:44,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837628627] [2021-11-25 19:12:44,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:44,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:12:44,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:44,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:12:44,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:12:44,897 INFO L87 Difference]: Start difference. First operand 1110 states and 1230 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:12:44,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:44,972 INFO L93 Difference]: Finished difference Result 1113 states and 1235 transitions. [2021-11-25 19:12:44,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:12:44,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-11-25 19:12:44,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:44,985 INFO L225 Difference]: With dead ends: 1113 [2021-11-25 19:12:44,985 INFO L226 Difference]: Without dead ends: 1113 [2021-11-25 19:12:44,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:12:44,986 INFO L933 BasicCegarLoop]: 1045 mSDtfsCounter, 2 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:44,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3127 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:12:44,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2021-11-25 19:12:45,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1113. [2021-11-25 19:12:45,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 696 states have (on average 1.7255747126436782) internal successors, (1201), 1104 states have internal predecessors, (1201), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2021-11-25 19:12:45,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1235 transitions. [2021-11-25 19:12:45,018 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1235 transitions. Word has length 66 [2021-11-25 19:12:45,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:45,018 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 1235 transitions. [2021-11-25 19:12:45,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:12:45,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1235 transitions. [2021-11-25 19:12:45,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 19:12:45,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:45,019 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] [2021-11-25 19:12:45,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:45,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:45,235 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 19:12:45,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:45,236 INFO L85 PathProgramCache]: Analyzing trace with hash -326306715, now seen corresponding path program 1 times [2021-11-25 19:12:45,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:45,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740693006] [2021-11-25 19:12:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:45,237 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:45,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:45,238 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:45,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-25 19:12:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:45,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:12:45,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:45,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:45,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:45,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:45,888 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:45,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740693006] [2021-11-25 19:12:45,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740693006] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:45,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1788100119] [2021-11-25 19:12:45,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:45,889 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:12:45,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:12:45,901 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:12:45,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-25 19:12:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:46,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:12:46,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:46,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:46,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:46,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1788100119] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:46,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762501228] [2021-11-25 19:12:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:46,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:46,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:46,696 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:46,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-25 19:12:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:46,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:12:46,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:47,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:47,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:47,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762501228] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:47,202 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:12:47,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-11-25 19:12:47,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196430772] [2021-11-25 19:12:47,203 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:12:47,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:12:47,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:47,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:12:47,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:12:47,205 INFO L87 Difference]: Start difference. First operand 1113 states and 1235 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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) [2021-11-25 19:12:47,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:47,455 INFO L93 Difference]: Finished difference Result 1125 states and 1253 transitions. [2021-11-25 19:12:47,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:12:47,456 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 67 [2021-11-25 19:12:47,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:47,464 INFO L225 Difference]: With dead ends: 1125 [2021-11-25 19:12:47,464 INFO L226 Difference]: Without dead ends: 1125 [2021-11-25 19:12:47,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:12:47,466 INFO L933 BasicCegarLoop]: 1045 mSDtfsCounter, 23 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3129 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:47,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 3129 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:12:47,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2021-11-25 19:12:47,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1123. [2021-11-25 19:12:47,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 705 states have (on average 1.724822695035461) internal successors, (1216), 1113 states have internal predecessors, (1216), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2021-11-25 19:12:47,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1250 transitions. [2021-11-25 19:12:47,502 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1250 transitions. Word has length 67 [2021-11-25 19:12:47,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:47,503 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1250 transitions. [2021-11-25 19:12:47,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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) [2021-11-25 19:12:47,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1250 transitions. [2021-11-25 19:12:47,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-25 19:12:47,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:47,505 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:47,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:47,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:47,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-25 19:12:48,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:48,121 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 19:12:48,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:48,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1716613406, now seen corresponding path program 2 times [2021-11-25 19:12:48,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:48,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983129950] [2021-11-25 19:12:48,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:12:48,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:48,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:48,124 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:48,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-25 19:12:48,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:12:48,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:12:48,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:12:48,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:48,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:49,040 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:49,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983129950] [2021-11-25 19:12:49,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983129950] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:49,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [960002420] [2021-11-25 19:12:49,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:12:49,041 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:12:49,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:12:49,042 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:12:49,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-25 19:12:50,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:12:50,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:12:50,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:12:50,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:50,348 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:50,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:50,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:50,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [960002420] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:50,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062824340] [2021-11-25 19:12:50,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:12:50,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:50,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:50,500 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:50,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-25 19:13:02,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:13:02,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:13:02,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:13:02,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:02,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:02,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:02,585 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:02,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062824340] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:02,586 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:13:02,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2021-11-25 19:13:02,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262293003] [2021-11-25 19:13:02,586 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:13:02,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-25 19:13:02,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:02,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-25 19:13:02,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:13:02,589 INFO L87 Difference]: Start difference. First operand 1123 states and 1250 transitions. Second operand has 20 states, 20 states have (on average 4.15) internal successors, (83), 20 states have internal predecessors, (83), 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) [2021-11-25 19:13:03,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:03,831 INFO L93 Difference]: Finished difference Result 1144 states and 1280 transitions. [2021-11-25 19:13:03,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 19:13:03,832 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.15) internal successors, (83), 20 states have internal predecessors, (83), 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 70 [2021-11-25 19:13:03,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:03,864 INFO L225 Difference]: With dead ends: 1144 [2021-11-25 19:13:03,864 INFO L226 Difference]: Without dead ends: 1138 [2021-11-25 19:13:03,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2021-11-25 19:13:03,866 INFO L933 BasicCegarLoop]: 1046 mSDtfsCounter, 63 mSDsluCounter, 8314 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 9360 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:03,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 9360 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:13:03,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2021-11-25 19:13:03,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1132. [2021-11-25 19:13:03,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 714 states have (on average 1.718487394957983) internal successors, (1227), 1122 states have internal predecessors, (1227), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2021-11-25 19:13:03,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1261 transitions. [2021-11-25 19:13:03,892 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1261 transitions. Word has length 70 [2021-11-25 19:13:03,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:03,893 INFO L470 AbstractCegarLoop]: Abstraction has 1132 states and 1261 transitions. [2021-11-25 19:13:03,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.15) internal successors, (83), 20 states have internal predecessors, (83), 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) [2021-11-25 19:13:03,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1261 transitions. [2021-11-25 19:13:03,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 19:13:03,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:03,894 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:03,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:04,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:04,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-25 19:13:04,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:13:04,496 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 19:13:04,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:04,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1956109246, now seen corresponding path program 3 times [2021-11-25 19:13:04,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:04,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834693581] [2021-11-25 19:13:04,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:13:04,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:04,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:04,498 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:04,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-25 19:13:05,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-25 19:13:05,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:13:05,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 19:13:05,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:05,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:06,566 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:06,566 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:06,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834693581] [2021-11-25 19:13:06,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834693581] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:06,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1232306630] [2021-11-25 19:13:06,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:13:06,567 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:13:06,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:13:06,567 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:13:06,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-25 19:13:10,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-25 19:13:10,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:13:10,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 19:13:10,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:10,645 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:10,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:11,036 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:11,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1232306630] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:11,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43622637] [2021-11-25 19:13:11,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:13:11,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:11,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:11,038 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:13:11,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b344599-5367-4dcb-9ff5-0b661d9f7719/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process