./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_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_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/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_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/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_0f245527-ab55-447e-bc9d-5842c756557f/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 be1dcf4f68625d62d28b81607385317c3749a3b9c4401099e862ce9a8a6e6751 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:22:27,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:22:27,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:22:27,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:22:27,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:22:27,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:22:27,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:22:27,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:22:27,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:22:27,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:22:27,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:22:27,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:22:27,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:22:27,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:22:27,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:22:27,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:22:27,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:22:27,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:22:27,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:22:27,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:22:27,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:22:27,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:22:27,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:22:27,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:22:27,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:22:27,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:22:27,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:22:27,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:22:27,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:22:27,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:22:27,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:22:27,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:22:27,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:22:27,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:22:27,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:22:27,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:22:27,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:22:27,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:22:27,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:22:27,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:22:27,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:22:27,343 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-25 19:22:27,398 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:22:27,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:22:27,399 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:22:27,399 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:22:27,400 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:22:27,400 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:22:27,400 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:22:27,401 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:22:27,401 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:22:27,401 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:22:27,402 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:22:27,402 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:22:27,403 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:22:27,403 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:22:27,403 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:22:27,403 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:22:27,404 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:22:27,404 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:22:27,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 19:22:27,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 19:22:27,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:22:27,405 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:22:27,406 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 19:22:27,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:22:27,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:22:27,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:22:27,408 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 19:22:27,408 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 19:22:27,408 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 19:22:27,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:22:27,409 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:22:27,409 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:22:27,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:22:27,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:22:27,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:22:27,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:22:27,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:22:27,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:22:27,411 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:22:27,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:22:27,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:22:27,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:22:27,412 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_0f245527-ab55-447e-bc9d-5842c756557f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be1dcf4f68625d62d28b81607385317c3749a3b9c4401099e862ce9a8a6e6751 [2021-11-25 19:22:27,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:22:27,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:22:27,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:22:27,701 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:22:27,702 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:22:27,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-1.i [2021-11-25 19:22:27,806 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/data/d4827954b/fce1be2d72054fd09521d698b9ba1e76/FLAG611df37e6 [2021-11-25 19:22:28,332 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:22:28,333 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-1.i [2021-11-25 19:22:28,351 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/data/d4827954b/fce1be2d72054fd09521d698b9ba1e76/FLAG611df37e6 [2021-11-25 19:22:28,630 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/data/d4827954b/fce1be2d72054fd09521d698b9ba1e76 [2021-11-25 19:22:28,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:22:28,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:22:28,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:22:28,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:22:28,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:22:28,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:22:28" (1/1) ... [2021-11-25 19:22:28,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6a6ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:22:28, skipping insertion in model container [2021-11-25 19:22:28,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:22:28" (1/1) ... [2021-11-25 19:22:28,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:22:28,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:22:29,203 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_0f245527-ab55-447e-bc9d-5842c756557f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-1.i[33021,33034] [2021-11-25 19:22:29,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:22:29,379 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 19:22:29,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@72210b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:22:29, skipping insertion in model container [2021-11-25 19:22:29,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:22:29,380 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-25 19:22:29,383 INFO L158 Benchmark]: Toolchain (without parser) took 748.05ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 51.3MB in the beginning and 80.4MB in the end (delta: -29.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2021-11-25 19:22:29,383 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 90.2MB. Free memory was 62.2MB in the beginning and 62.1MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:22:29,385 INFO L158 Benchmark]: CACSL2BoogieTranslator took 745.27ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 51.1MB in the beginning and 80.4MB in the end (delta: -29.3MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2021-11-25 19:22:29,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 90.2MB. Free memory was 62.2MB in the beginning and 62.1MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 745.27ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 51.1MB in the beginning and 80.4MB in the end (delta: -29.3MB). Peak memory consumption was 6.5MB. 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_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/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_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/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_0f245527-ab55-447e-bc9d-5842c756557f/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 be1dcf4f68625d62d28b81607385317c3749a3b9c4401099e862ce9a8a6e6751 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:22:31,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:22:31,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:22:31,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:22:31,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:22:31,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:22:31,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:22:31,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:22:31,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:22:31,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:22:31,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:22:31,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:22:31,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:22:31,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:22:31,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:22:31,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:22:31,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:22:31,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:22:31,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:22:31,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:22:31,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:22:31,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:22:31,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:22:31,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:22:31,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:22:31,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:22:31,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:22:31,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:22:31,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:22:31,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:22:31,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:22:31,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:22:31,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:22:31,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:22:31,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:22:31,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:22:31,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:22:31,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:22:31,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:22:31,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:22:31,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:22:31,821 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-25 19:22:31,867 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:22:31,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:22:31,868 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:22:31,868 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:22:31,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:22:31,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:22:31,870 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:22:31,870 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:22:31,870 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:22:31,870 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:22:31,871 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:22:31,872 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:22:31,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 19:22:31,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 19:22:31,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:22:31,874 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:22:31,874 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 19:22:31,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:22:31,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:22:31,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:22:31,875 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 19:22:31,875 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 19:22:31,876 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 19:22:31,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:22:31,876 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:22:31,876 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:22:31,877 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:22:31,877 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:22:31,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:22:31,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:22:31,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:22:31,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:22:31,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:22:31,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:22:31,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:22:31,879 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:22:31,879 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:22:31,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:22:31,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:22:31,880 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_0f245527-ab55-447e-bc9d-5842c756557f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be1dcf4f68625d62d28b81607385317c3749a3b9c4401099e862ce9a8a6e6751 [2021-11-25 19:22:32,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:22:32,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:22:32,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:22:32,290 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:22:32,293 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:22:32,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-1.i [2021-11-25 19:22:32,373 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/data/0de65728c/4160358abc2f4dadbadcec4c9fc617e2/FLAGe2964a2b5 [2021-11-25 19:22:33,067 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:22:33,071 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-1.i [2021-11-25 19:22:33,096 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/data/0de65728c/4160358abc2f4dadbadcec4c9fc617e2/FLAGe2964a2b5 [2021-11-25 19:22:33,222 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/data/0de65728c/4160358abc2f4dadbadcec4c9fc617e2 [2021-11-25 19:22:33,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:22:33,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:22:33,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:22:33,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:22:33,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:22:33,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:22:33" (1/1) ... [2021-11-25 19:22:33,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16718fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:22:33, skipping insertion in model container [2021-11-25 19:22:33,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:22:33" (1/1) ... [2021-11-25 19:22:33,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:22:33,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:22:33,822 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_0f245527-ab55-447e-bc9d-5842c756557f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-1.i[33021,33034] [2021-11-25 19:22:33,963 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:22:33,995 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-25 19:22:34,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:22:34,030 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_0f245527-ab55-447e-bc9d-5842c756557f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-1.i[33021,33034] [2021-11-25 19:22:34,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:22:34,142 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:22:34,179 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_0f245527-ab55-447e-bc9d-5842c756557f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-1.i[33021,33034] [2021-11-25 19:22:34,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:22:34,293 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:22:34,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:22:34 WrapperNode [2021-11-25 19:22:34,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:22:34,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:22:34,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:22:34,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:22:34,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:22:34" (1/1) ... [2021-11-25 19:22:34,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:22:34" (1/1) ... [2021-11-25 19:22:34,476 INFO L137 Inliner]: procedures = 180, calls = 349, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1166 [2021-11-25 19:22:34,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:22:34,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:22:34,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:22:34,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:22:34,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:22:34" (1/1) ... [2021-11-25 19:22:34,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:22:34" (1/1) ... [2021-11-25 19:22:34,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:22:34" (1/1) ... [2021-11-25 19:22:34,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:22:34" (1/1) ... [2021-11-25 19:22:34,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:22:34" (1/1) ... [2021-11-25 19:22:34,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:22:34" (1/1) ... [2021-11-25 19:22:34,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:22:34" (1/1) ... [2021-11-25 19:22:34,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:22:34,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:22:34,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:22:34,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:22:34,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:22:34" (1/1) ... [2021-11-25 19:22:34,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:22:34,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:22:34,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:22:34,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:22:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-25 19:22:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 19:22:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:22:34,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:22:34,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:22:34,718 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:22:34,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:22:34,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:22:34,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:22:34,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:22:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:22:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:22:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 19:22:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:22:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:22:34,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:22:35,037 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:22:35,039 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:22:35,043 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 19:22:40,663 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:22:40,680 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:22:40,680 INFO L301 CfgBuilder]: Removed 60 assume(true) statements. [2021-11-25 19:22:40,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:22:40 BoogieIcfgContainer [2021-11-25 19:22:40,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:22:40,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:22:40,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:22:40,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:22:40,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:22:33" (1/3) ... [2021-11-25 19:22:40,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36119e94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:22:40, skipping insertion in model container [2021-11-25 19:22:40,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:22:34" (2/3) ... [2021-11-25 19:22:40,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36119e94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:22:40, skipping insertion in model container [2021-11-25 19:22:40,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:22:40" (3/3) ... [2021-11-25 19:22:40,712 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test4-1.i [2021-11-25 19:22:40,718 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:22:40,718 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 648 error locations. [2021-11-25 19:22:40,780 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:22:40,789 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 19:22:40,789 INFO L340 AbstractCegarLoop]: Starting to check reachability of 648 error locations. [2021-11-25 19:22:40,833 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 19:22:40,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:22:40,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:40,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:22:40,841 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 19:22:40,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:40,846 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-11-25 19:22:40,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:22:40,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721129667] [2021-11-25 19:22:40,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:40,860 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:22:40,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:22:40,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:22:40,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:22:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:41,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 19:22:41,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:41,117 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 19:22:41,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:22:41,118 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:22:41,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721129667] [2021-11-25 19:22:41,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721129667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:41,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:41,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:22:41,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238204022] [2021-11-25 19:22:41,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:41,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:22:41,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:22:41,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:22:41,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:22:41,159 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 19:22:41,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:41,294 INFO L93 Difference]: Finished difference Result 1256 states and 1330 transitions. [2021-11-25 19:22:41,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:22:41,296 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 19:22:41,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:41,324 INFO L225 Difference]: With dead ends: 1256 [2021-11-25 19:22:41,324 INFO L226 Difference]: Without dead ends: 1254 [2021-11-25 19:22:41,326 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 19:22:41,330 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 19:22:41,331 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 19:22:41,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-11-25 19:22:41,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1254. [2021-11-25 19:22:41,468 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 19:22:41,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1328 transitions. [2021-11-25 19:22:41,500 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1328 transitions. Word has length 5 [2021-11-25 19:22:41,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:41,500 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 1328 transitions. [2021-11-25 19:22:41,501 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 19:22:41,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1328 transitions. [2021-11-25 19:22:41,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:22:41,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:41,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:22:41,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:22:41,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:22:41,721 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 19:22:41,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:41,722 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-11-25 19:22:41,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:22:41,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267641431] [2021-11-25 19:22:41,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:41,723 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:22:41,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:22:41,724 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:22:41,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 19:22:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:41,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:22:41,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:42,012 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 19:22:42,026 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 19:22:42,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:22:42,027 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:22:42,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267641431] [2021-11-25 19:22:42,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267641431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:42,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:42,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:22:42,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503850941] [2021-11-25 19:22:42,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:42,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:22:42,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:22:42,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:22:42,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:22:42,031 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 19:22:44,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:44,842 INFO L93 Difference]: Finished difference Result 1291 states and 1378 transitions. [2021-11-25 19:22:44,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:22:44,842 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 19:22:44,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:44,851 INFO L225 Difference]: With dead ends: 1291 [2021-11-25 19:22:44,851 INFO L226 Difference]: Without dead ends: 1291 [2021-11-25 19:22:44,852 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 19:22:44,853 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 1159 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:44,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 704 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-25 19:22:44,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-11-25 19:22:44,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1237. [2021-11-25 19:22:44,890 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 19:22:44,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1370 transitions. [2021-11-25 19:22:44,898 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1370 transitions. Word has length 5 [2021-11-25 19:22:44,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:44,898 INFO L470 AbstractCegarLoop]: Abstraction has 1237 states and 1370 transitions. [2021-11-25 19:22:44,899 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 19:22:44,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1370 transitions. [2021-11-25 19:22:44,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:22:44,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:44,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:22:44,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:22:45,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:22:45,111 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 19:22:45,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:45,112 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-11-25 19:22:45,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:22:45,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816644112] [2021-11-25 19:22:45,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:45,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:22:45,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:22:45,130 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:22:45,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 19:22:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:45,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:22:45,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:45,276 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 19:22:45,304 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 19:22:45,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:22:45,304 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:22:45,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816644112] [2021-11-25 19:22:45,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816644112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:45,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:45,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:22:45,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70273772] [2021-11-25 19:22:45,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:45,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:22:45,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:22:45,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:22:45,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:22:45,307 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 19:22:48,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:48,840 INFO L93 Difference]: Finished difference Result 1540 states and 1693 transitions. [2021-11-25 19:22:48,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:22:48,840 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 19:22:48,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:48,849 INFO L225 Difference]: With dead ends: 1540 [2021-11-25 19:22:48,850 INFO L226 Difference]: Without dead ends: 1540 [2021-11-25 19:22:48,850 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 19:22:48,851 INFO L933 BasicCegarLoop]: 996 mSDtfsCounter, 504 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s 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, 3.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:48,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 1483 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-25 19:22:48,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2021-11-25 19:22:48,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1393. [2021-11-25 19:22:48,887 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 19:22:48,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1676 transitions. [2021-11-25 19:22:48,895 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1676 transitions. Word has length 5 [2021-11-25 19:22:48,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:48,896 INFO L470 AbstractCegarLoop]: Abstraction has 1393 states and 1676 transitions. [2021-11-25 19:22:48,896 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 19:22:48,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1676 transitions. [2021-11-25 19:22:48,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 19:22:48,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:48,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 19:22:48,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:22:49,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:22:49,109 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 19:22:49,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:49,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2021-11-25 19:22:49,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:22:49,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221368984] [2021-11-25 19:22:49,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:49,110 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:22:49,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:22:49,111 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:22:49,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 19:22:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:49,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:22:49,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:49,241 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 19:22:49,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:22:49,242 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:22:49,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221368984] [2021-11-25 19:22:49,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221368984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:49,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:49,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:22:49,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151764865] [2021-11-25 19:22:49,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:49,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:22:49,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:22:49,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:22:49,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:22:49,257 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 19:22:49,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:49,362 INFO L93 Difference]: Finished difference Result 2737 states and 3283 transitions. [2021-11-25 19:22:49,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:22:49,366 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 19:22:49,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:49,383 INFO L225 Difference]: With dead ends: 2737 [2021-11-25 19:22:49,383 INFO L226 Difference]: Without dead ends: 2737 [2021-11-25 19:22:49,384 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 19:22:49,386 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 19:22:49,388 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 19:22:49,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2021-11-25 19:22:49,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 1394. [2021-11-25 19:22:49,438 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 19:22:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1677 transitions. [2021-11-25 19:22:49,446 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1677 transitions. Word has length 6 [2021-11-25 19:22:49,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:49,447 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 1677 transitions. [2021-11-25 19:22:49,448 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 19:22:49,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1677 transitions. [2021-11-25 19:22:49,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 19:22:49,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:49,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:22:49,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:22:49,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:22:49,666 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 19:22:49,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:49,667 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-11-25 19:22:49,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:22:49,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5285828] [2021-11-25 19:22:49,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:49,668 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:22:49,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:22:49,669 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:22:49,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 19:22:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:49,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:22:49,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:49,858 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 19:22:49,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:22:49,858 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:22:49,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5285828] [2021-11-25 19:22:49,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5285828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:49,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:49,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:22:49,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059020548] [2021-11-25 19:22:49,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:49,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:22:49,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:22:49,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:22:49,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:22:49,861 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 19:22:49,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:49,903 INFO L93 Difference]: Finished difference Result 1358 states and 1640 transitions. [2021-11-25 19:22:49,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:22:49,904 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 19:22:49,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:49,912 INFO L225 Difference]: With dead ends: 1358 [2021-11-25 19:22:49,912 INFO L226 Difference]: Without dead ends: 1358 [2021-11-25 19:22:49,912 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 19:22:49,913 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 19:22:49,913 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 19:22:49,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2021-11-25 19:22:49,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1352. [2021-11-25 19:22:49,962 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 19:22:49,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1634 transitions. [2021-11-25 19:22:49,969 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1634 transitions. Word has length 11 [2021-11-25 19:22:49,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:49,970 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 1634 transitions. [2021-11-25 19:22:49,970 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 19:22:49,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1634 transitions. [2021-11-25 19:22:49,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 19:22:49,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:49,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:22:49,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-25 19:22:50,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:22:50,182 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 19:22:50,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:50,183 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-11-25 19:22:50,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:22:50,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094379266] [2021-11-25 19:22:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:50,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:22:50,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:22:50,185 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:22:50,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 19:22:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:50,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:22:50,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:50,382 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 19:22:50,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:22:50,383 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:22:50,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094379266] [2021-11-25 19:22:50,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094379266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:50,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:50,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:22:50,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206405626] [2021-11-25 19:22:50,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:50,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:22:50,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:22:50,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:22:50,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:22:50,385 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 19:22:50,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:50,492 INFO L93 Difference]: Finished difference Result 1337 states and 1612 transitions. [2021-11-25 19:22:50,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:22:50,492 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 19:22:50,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:50,500 INFO L225 Difference]: With dead ends: 1337 [2021-11-25 19:22:50,500 INFO L226 Difference]: Without dead ends: 1337 [2021-11-25 19:22:50,500 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 19:22:50,501 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 19:22:50,502 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 19:22:50,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2021-11-25 19:22:50,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1330. [2021-11-25 19:22:50,529 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 19:22:50,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1605 transitions. [2021-11-25 19:22:50,537 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1605 transitions. Word has length 13 [2021-11-25 19:22:50,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:50,537 INFO L470 AbstractCegarLoop]: Abstraction has 1330 states and 1605 transitions. [2021-11-25 19:22:50,537 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 19:22:50,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1605 transitions. [2021-11-25 19:22:50,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 19:22:50,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:50,539 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 19:22:50,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:22:50,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:22:50,754 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 19:22:50,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:50,755 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-11-25 19:22:50,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:22:50,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594892573] [2021-11-25 19:22:50,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:50,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:22:50,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:22:50,757 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:22:50,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-25 19:22:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:50,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:22:50,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:50,959 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 19:22:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:22:51,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:22:51,056 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:22:51,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594892573] [2021-11-25 19:22:51,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594892573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:51,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:51,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:22:51,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273512751] [2021-11-25 19:22:51,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:51,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:22:51,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:22:51,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:22:51,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:22:51,061 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 19:22:54,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:54,750 INFO L93 Difference]: Finished difference Result 1791 states and 2054 transitions. [2021-11-25 19:22:54,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:22:54,751 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 19:22:54,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:54,762 INFO L225 Difference]: With dead ends: 1791 [2021-11-25 19:22:54,762 INFO L226 Difference]: Without dead ends: 1791 [2021-11-25 19:22:54,762 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 19:22:54,763 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 2394 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s 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, 3.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:54,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2407 Valid, 1007 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-25 19:22:54,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-11-25 19:22:54,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1326. [2021-11-25 19:22:54,800 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 19:22:54,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1601 transitions. [2021-11-25 19:22:54,807 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1601 transitions. Word has length 27 [2021-11-25 19:22:54,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:54,807 INFO L470 AbstractCegarLoop]: Abstraction has 1326 states and 1601 transitions. [2021-11-25 19:22:54,808 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 19:22:54,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1601 transitions. [2021-11-25 19:22:54,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 19:22:54,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:54,810 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 19:22:54,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:22:55,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:22:55,022 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 19:22:55,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:55,024 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2021-11-25 19:22:55,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:22:55,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685759715] [2021-11-25 19:22:55,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:55,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:22:55,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:22:55,026 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:22:55,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 19:22:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:55,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:22:55,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:55,222 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 19:22:55,468 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 19:22:55,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:22:55,468 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:22:55,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685759715] [2021-11-25 19:22:55,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685759715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:55,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:55,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:22:55,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588905553] [2021-11-25 19:22:55,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:55,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:22:55,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:22:55,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:22:55,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:22:55,470 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 19:22:59,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:59,248 INFO L93 Difference]: Finished difference Result 1510 states and 1675 transitions. [2021-11-25 19:22:59,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:22:59,248 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 19:22:59,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:59,256 INFO L225 Difference]: With dead ends: 1510 [2021-11-25 19:22:59,256 INFO L226 Difference]: Without dead ends: 1510 [2021-11-25 19:22:59,257 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 19:22:59,257 INFO L933 BasicCegarLoop]: 956 mSDtfsCounter, 851 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s 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, 3.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:59,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 1923 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-25 19:22:59,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2021-11-25 19:22:59,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1322. [2021-11-25 19:22:59,298 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 19:22:59,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1597 transitions. [2021-11-25 19:22:59,304 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1597 transitions. Word has length 27 [2021-11-25 19:22:59,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:59,305 INFO L470 AbstractCegarLoop]: Abstraction has 1322 states and 1597 transitions. [2021-11-25 19:22:59,305 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 19:22:59,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1597 transitions. [2021-11-25 19:22:59,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-25 19:22:59,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:59,307 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 19:22:59,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:22:59,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:22:59,531 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 19:22:59,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:59,531 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2021-11-25 19:22:59,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:22:59,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849881457] [2021-11-25 19:22:59,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:59,532 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:22:59,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:22:59,533 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:22:59,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-25 19:22:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:59,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:22:59,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:59,846 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 19:22:59,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:22:59,846 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:22:59,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849881457] [2021-11-25 19:22:59,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849881457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:59,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:59,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:22:59,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685988311] [2021-11-25 19:22:59,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:59,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:22:59,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:22:59,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:22:59,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:22:59,849 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 19:22:59,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:59,918 INFO L93 Difference]: Finished difference Result 1322 states and 1593 transitions. [2021-11-25 19:22:59,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:22:59,919 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 19:22:59,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:59,927 INFO L225 Difference]: With dead ends: 1322 [2021-11-25 19:22:59,927 INFO L226 Difference]: Without dead ends: 1322 [2021-11-25 19:22:59,927 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 19:22:59,930 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 19:22:59,930 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 19:22:59,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2021-11-25 19:22:59,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1316. [2021-11-25 19:22:59,956 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 19:22:59,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1587 transitions. [2021-11-25 19:22:59,961 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1587 transitions. Word has length 42 [2021-11-25 19:22:59,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:59,963 INFO L470 AbstractCegarLoop]: Abstraction has 1316 states and 1587 transitions. [2021-11-25 19:22:59,963 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 19:22:59,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1587 transitions. [2021-11-25 19:22:59,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 19:22:59,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:59,968 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 19:22:59,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-25 19:23:00,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:23:00,181 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 19:23:00,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:23:00,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2021-11-25 19:23:00,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:23:00,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184969642] [2021-11-25 19:23:00,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:23:00,183 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:23:00,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:23:00,184 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:23:00,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-25 19:23:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:23:00,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:23:00,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:23:00,786 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 19:23:00,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:23:00,787 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:23:00,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184969642] [2021-11-25 19:23:00,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184969642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:23:00,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:23:00,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:23:00,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829100210] [2021-11-25 19:23:00,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:23:00,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:23:00,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:23:00,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:23:00,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:23:00,789 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 19:23:00,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:23:00,888 INFO L93 Difference]: Finished difference Result 1362 states and 1633 transitions. [2021-11-25 19:23:00,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:23:00,889 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 19:23:00,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:23:00,898 INFO L225 Difference]: With dead ends: 1362 [2021-11-25 19:23:00,898 INFO L226 Difference]: Without dead ends: 1362 [2021-11-25 19:23:00,898 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 19:23:00,899 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 19:23:00,901 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 19:23:00,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-11-25 19:23:00,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1362. [2021-11-25 19:23:00,926 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 19:23:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1633 transitions. [2021-11-25 19:23:00,931 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1633 transitions. Word has length 50 [2021-11-25 19:23:00,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:23:00,932 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 1633 transitions. [2021-11-25 19:23:00,932 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 19:23:00,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1633 transitions. [2021-11-25 19:23:00,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-25 19:23:00,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:23:00,937 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 19:23:00,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-25 19:23:01,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:23:01,153 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 19:23:01,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:23:01,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2021-11-25 19:23:01,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:23:01,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800413926] [2021-11-25 19:23:01,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:23:01,155 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:23:01,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:23:01,156 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:23:01,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-25 19:23:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:23:01,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:23:01,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:23:01,565 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 19:23:01,574 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 19:23:02,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:23:02,146 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 19:23:02,161 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:23:02,161 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 19:23:02,181 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 19:23:02,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:23:02,182 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:23:02,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800413926] [2021-11-25 19:23:02,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800413926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:23:02,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:23:02,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:23:02,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85560721] [2021-11-25 19:23:02,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:23:02,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:23:02,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:23:02,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:23:02,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:23:02,185 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 19:23:04,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:23:04,676 INFO L93 Difference]: Finished difference Result 1331 states and 1556 transitions. [2021-11-25 19:23:04,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:23:04,677 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 19:23:04,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:23:04,683 INFO L225 Difference]: With dead ends: 1331 [2021-11-25 19:23:04,683 INFO L226 Difference]: Without dead ends: 1331 [2021-11-25 19:23:04,683 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 19:23:04,684 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 19:23:04,684 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 19:23:04,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2021-11-25 19:23:04,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1112. [2021-11-25 19:23:04,706 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 19:23:04,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1232 transitions. [2021-11-25 19:23:04,710 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1232 transitions. Word has length 53 [2021-11-25 19:23:04,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:23:04,711 INFO L470 AbstractCegarLoop]: Abstraction has 1112 states and 1232 transitions. [2021-11-25 19:23:04,711 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 19:23:04,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1232 transitions. [2021-11-25 19:23:04,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 19:23:04,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:23:04,712 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 19:23:04,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-25 19:23:04,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:23:04,927 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 19:23:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:23:04,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2021-11-25 19:23:04,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:23:04,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501632212] [2021-11-25 19:23:04,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:23:04,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:23:04,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:23:04,930 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:23:04,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-25 19:23:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:23:05,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:23:05,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:23:05,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:23:05,343 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 19:23:05,384 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 19:23:05,398 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 19:23:05,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:23:05,399 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:23:05,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501632212] [2021-11-25 19:23:05,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501632212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:23:05,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:23:05,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:23:05,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068569269] [2021-11-25 19:23:05,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:23:05,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:23:05,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:23:05,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:23:05,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:23:05,402 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 19:23:08,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:23:08,514 INFO L93 Difference]: Finished difference Result 1111 states and 1231 transitions. [2021-11-25 19:23:08,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:23:08,514 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 19:23:08,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:23:08,519 INFO L225 Difference]: With dead ends: 1111 [2021-11-25 19:23:08,519 INFO L226 Difference]: Without dead ends: 1111 [2021-11-25 19:23:08,520 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 19:23:08,520 INFO L933 BasicCegarLoop]: 1046 mSDtfsCounter, 4 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s 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, 3.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:23:08,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2649 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-25 19:23:08,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2021-11-25 19:23:08,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1111. [2021-11-25 19:23:08,548 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 19:23:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1231 transitions. [2021-11-25 19:23:08,551 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1231 transitions. Word has length 58 [2021-11-25 19:23:08,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:23:08,553 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 1231 transitions. [2021-11-25 19:23:08,553 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 19:23:08,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1231 transitions. [2021-11-25 19:23:08,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 19:23:08,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:23:08,555 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 19:23:08,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-25 19:23:08,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:23:08,768 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 19:23:08,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:23:08,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2021-11-25 19:23:08,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:23:08,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36920612] [2021-11-25 19:23:08,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:23:08,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:23:08,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:23:08,770 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:23:08,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-25 19:23:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:23:09,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:23:09,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:23:09,111 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 19:23:09,137 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 19:23:09,148 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 19:23:09,213 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 19:23:09,218 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 19:23:09,240 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 19:23:09,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:23:09,241 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:23:09,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36920612] [2021-11-25 19:23:09,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36920612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:23:09,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:23:09,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:23:09,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443824798] [2021-11-25 19:23:09,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:23:09,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:23:09,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:23:09,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:23:09,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:23:09,242 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 19:23:13,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:23:13,157 INFO L93 Difference]: Finished difference Result 1110 states and 1230 transitions. [2021-11-25 19:23:13,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:23:13,157 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 19:23:13,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:23:13,162 INFO L225 Difference]: With dead ends: 1110 [2021-11-25 19:23:13,162 INFO L226 Difference]: Without dead ends: 1110 [2021-11-25 19:23:13,162 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 19:23:13,163 INFO L933 BasicCegarLoop]: 1046 mSDtfsCounter, 2 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s 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, 3.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:23:13,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2672 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-25 19:23:13,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-11-25 19:23:13,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2021-11-25 19:23:13,181 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 19:23:13,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1230 transitions. [2021-11-25 19:23:13,184 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1230 transitions. Word has length 58 [2021-11-25 19:23:13,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:23:13,184 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 1230 transitions. [2021-11-25 19:23:13,184 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 19:23:13,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1230 transitions. [2021-11-25 19:23:13,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 19:23:13,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:23:13,186 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 19:23:13,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-25 19:23:13,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:23:13,399 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 19:23:13,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:23:13,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2041767774, now seen corresponding path program 1 times [2021-11-25 19:23:13,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:23:13,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341524469] [2021-11-25 19:23:13,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:23:13,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:23:13,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:23:13,404 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:23:13,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-25 19:23:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:23:13,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:23:13,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:23:13,842 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 19:23:13,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:23:13,843 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:23:13,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341524469] [2021-11-25 19:23:13,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341524469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:23:13,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:23:13,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:23:13,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686744656] [2021-11-25 19:23:13,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:23:13,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:23:13,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:23:13,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:23:13,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:23:13,846 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 19:23:13,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:23:13,918 INFO L93 Difference]: Finished difference Result 1113 states and 1235 transitions. [2021-11-25 19:23:13,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:23:13,920 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 19:23:13,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:23:13,930 INFO L225 Difference]: With dead ends: 1113 [2021-11-25 19:23:13,930 INFO L226 Difference]: Without dead ends: 1113 [2021-11-25 19:23:13,931 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 19:23:13,931 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 19:23:13,932 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 19:23:13,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2021-11-25 19:23:13,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1113. [2021-11-25 19:23:13,958 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 19:23:13,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1235 transitions. [2021-11-25 19:23:13,961 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1235 transitions. Word has length 66 [2021-11-25 19:23:13,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:23:13,962 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 1235 transitions. [2021-11-25 19:23:13,962 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 19:23:13,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1235 transitions. [2021-11-25 19:23:13,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 19:23:13,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:23:13,963 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 19:23:13,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-25 19:23:14,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:23:14,181 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 19:23:14,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:23:14,181 INFO L85 PathProgramCache]: Analyzing trace with hash -326306715, now seen corresponding path program 1 times [2021-11-25 19:23:14,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:23:14,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127767835] [2021-11-25 19:23:14,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:23:14,182 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:23:14,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:23:14,184 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:23:14,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-25 19:23:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:23:14,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:23:14,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:23:14,647 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 19:23:14,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:23:14,847 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 19:23:14,847 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:23:14,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127767835] [2021-11-25 19:23:14,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127767835] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:23:14,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1020665304] [2021-11-25 19:23:14,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:23:14,848 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:23:14,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:23:14,851 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:23:14,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-25 19:23:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:23:15,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:23:15,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:23:15,438 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 19:23:15,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:23:15,562 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 19:23:15,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1020665304] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:23:15,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071886700] [2021-11-25 19:23:15,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:23:15,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:23:15,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:23:15,565 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:23:15,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-25 19:23:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:23:15,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:23:15,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:23:15,912 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 19:23:15,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:23:16,035 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 19:23:16,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071886700] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:23:16,035 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:23:16,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-11-25 19:23:16,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957287225] [2021-11-25 19:23:16,036 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:23:16,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:23:16,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:23:16,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:23:16,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:23:16,037 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 19:23:16,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:23:16,238 INFO L93 Difference]: Finished difference Result 1125 states and 1253 transitions. [2021-11-25 19:23:16,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:23:16,239 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 19:23:16,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:23:16,244 INFO L225 Difference]: With dead ends: 1125 [2021-11-25 19:23:16,244 INFO L226 Difference]: Without dead ends: 1125 [2021-11-25 19:23:16,245 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 19:23:16,246 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, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:23:16,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 3129 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:23:16,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2021-11-25 19:23:16,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1123. [2021-11-25 19:23:16,267 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 19:23:16,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1250 transitions. [2021-11-25 19:23:16,270 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1250 transitions. Word has length 67 [2021-11-25 19:23:16,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:23:16,271 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1250 transitions. [2021-11-25 19:23:16,271 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 19:23:16,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1250 transitions. [2021-11-25 19:23:16,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-25 19:23:16,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:23:16,272 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 19:23:16,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-25 19:23:16,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-25 19:23:16,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-25 19:23:16,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:23:16,886 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 19:23:16,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:23:16,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1716613406, now seen corresponding path program 2 times [2021-11-25 19:23:16,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:23:16,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408451428] [2021-11-25 19:23:16,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:23:16,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:23:16,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:23:16,889 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:23:16,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-25 19:23:17,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:23:17,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:23:17,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:23:17,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:23:17,528 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 19:23:17,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:23:17,798 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 19:23:17,799 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:23:17,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408451428] [2021-11-25 19:23:17,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408451428] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:23:17,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1029487667] [2021-11-25 19:23:17,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:23:17,799 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:23:17,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:23:17,800 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:23:17,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-25 19:23:18,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:23:18,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:23:18,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:23:18,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:23:19,044 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 19:23:19,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:23:19,192 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 19:23:19,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1029487667] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:23:19,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538505131] [2021-11-25 19:23:19,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:23:19,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:23:19,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:23:19,194 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:23:19,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-25 19:23:29,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:23:29,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:23:29,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:23:29,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:23:29,898 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 19:23:29,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:23:30,247 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 19:23:30,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538505131] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:23:30,247 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:23:30,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2021-11-25 19:23:30,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506956880] [2021-11-25 19:23:30,248 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:23:30,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-25 19:23:30,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:23:30,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-25 19:23:30,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:23:30,250 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 19:23:31,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:23:31,376 INFO L93 Difference]: Finished difference Result 1144 states and 1280 transitions. [2021-11-25 19:23:31,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 19:23:31,378 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 19:23:31,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:23:31,386 INFO L225 Difference]: With dead ends: 1144 [2021-11-25 19:23:31,386 INFO L226 Difference]: Without dead ends: 1138 [2021-11-25 19:23:31,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2021-11-25 19:23:31,387 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 19:23:31,388 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 19:23:31,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2021-11-25 19:23:31,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1132. [2021-11-25 19:23:31,416 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 19:23:31,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1261 transitions. [2021-11-25 19:23:31,420 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1261 transitions. Word has length 70 [2021-11-25 19:23:31,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:23:31,421 INFO L470 AbstractCegarLoop]: Abstraction has 1132 states and 1261 transitions. [2021-11-25 19:23:31,421 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 19:23:31,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1261 transitions. [2021-11-25 19:23:31,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 19:23:31,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:23:31,428 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 19:23:31,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-25 19:23:31,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-25 19:23:31,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-25 19:23:32,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:23:32,034 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 19:23:32,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:23:32,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1956109246, now seen corresponding path program 3 times [2021-11-25 19:23:32,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:23:32,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571468953] [2021-11-25 19:23:32,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:23:32,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:23:32,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:23:32,037 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:23:32,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-25 19:23:32,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-25 19:23:32,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:23:32,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 19:23:32,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:23:32,995 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 19:23:32,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:23:33,876 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 19:23:33,876 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:23:33,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571468953] [2021-11-25 19:23:33,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571468953] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:23:33,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1777304525] [2021-11-25 19:23:33,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:23:33,877 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:23:33,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:23:33,878 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:23:33,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-25 19:23:37,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-25 19:23:37,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:23:37,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 19:23:37,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:23:37,544 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 19:23:37,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:23:37,856 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 19:23:37,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1777304525] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:23:37,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190406477] [2021-11-25 19:23:37,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:23:37,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:23:37,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:23:37,858 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:23:37,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f245527-ab55-447e-bc9d-5842c756557f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process