./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl --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 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:24:53,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:24:53,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:24:53,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:24:53,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:24:53,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:24:53,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:24:53,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:24:53,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:24:53,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:24:53,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:24:53,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:24:53,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:24:53,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:24:53,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:24:53,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:24:53,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:24:53,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:24:53,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:24:53,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:24:53,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:24:53,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:24:53,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:24:53,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:24:53,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:24:53,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:24:53,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:24:53,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:24:53,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:24:53,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:24:53,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:24:53,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:24:53,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:24:53,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:24:53,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:24:53,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:24:53,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:24:53,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:24:53,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:24:53,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:24:53,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:24:53,458 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 17:24:53,492 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:24:53,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:24:53,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:24:53,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:24:53,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:24:53,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:24:53,494 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:24:53,494 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:24:53,495 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:24:53,495 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:24:53,495 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:24:53,496 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:24:53,496 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:24:53,496 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:24:53,496 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:24:53,497 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:24:53,497 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:24:53,497 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:24:53,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 17:24:53,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 17:24:53,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:24:53,499 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:24:53,499 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 17:24:53,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:24:53,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:24:53,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:24:53,501 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 17:24:53,501 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 17:24:53,501 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 17:24:53,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:24:53,502 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:24:53,502 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:24:53,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:24:53,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:24:53,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:24:53,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:24:53,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:24:53,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:24:53,504 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:24:53,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:24:53,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:24:53,505 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:24:53,505 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_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 [2021-11-23 17:24:53,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:24:53,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:24:53,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:24:53,860 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:24:53,861 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:24:53,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2021-11-23 17:24:53,958 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/data/5a3248a0d/0869c0e0b83b4e84903e9dfe9ad85eeb/FLAGe2b800eb4 [2021-11-23 17:24:54,681 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:24:54,682 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2021-11-23 17:24:54,714 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/data/5a3248a0d/0869c0e0b83b4e84903e9dfe9ad85eeb/FLAGe2b800eb4 [2021-11-23 17:24:54,837 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/data/5a3248a0d/0869c0e0b83b4e84903e9dfe9ad85eeb [2021-11-23 17:24:54,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:24:54,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:24:54,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:24:54,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:24:54,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:24:54,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:24:54" (1/1) ... [2021-11-23 17:24:54,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c52df7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:24:54, skipping insertion in model container [2021-11-23 17:24:54,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:24:54" (1/1) ... [2021-11-23 17:24:54,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:24:54,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:24:55,467 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_f8599108-dbbf-4baf-86fd-848ba5d181a2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i[33021,33034] [2021-11-23 17:24:55,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:24:55,632 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) [2021-11-23 17:24:55,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@33ed05f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:24:55, skipping insertion in model container [2021-11-23 17:24:55,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:24:55,645 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 17:24:55,647 INFO L158 Benchmark]: Toolchain (without parser) took 803.96ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 41.8MB in the beginning and 69.7MB in the end (delta: -27.8MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2021-11-23 17:24:55,648 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory is still 60.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:24:55,649 INFO L158 Benchmark]: CACSL2BoogieTranslator took 800.43ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 41.6MB in the beginning and 69.7MB in the end (delta: -28.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2021-11-23 17:24:55,651 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory is still 60.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 800.43ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 41.6MB in the beginning and 69.7MB in the end (delta: -28.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl --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 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:24:58,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:24:58,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:24:58,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:24:58,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:24:58,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:24:58,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:24:58,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:24:58,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:24:58,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:24:58,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:24:58,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:24:58,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:24:58,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:24:58,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:24:58,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:24:58,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:24:58,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:24:58,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:24:58,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:24:58,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:24:58,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:24:58,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:24:58,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:24:58,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:24:58,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:24:58,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:24:58,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:24:58,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:24:58,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:24:58,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:24:58,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:24:58,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:24:58,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:24:58,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:24:58,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:24:58,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:24:58,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:24:58,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:24:58,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:24:58,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:24:58,541 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 17:24:58,584 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:24:58,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:24:58,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:24:58,586 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:24:58,587 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:24:58,588 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:24:58,588 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:24:58,589 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:24:58,589 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:24:58,590 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:24:58,590 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:24:58,591 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:24:58,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 17:24:58,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 17:24:58,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:24:58,593 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:24:58,593 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 17:24:58,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:24:58,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:24:58,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:24:58,595 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 17:24:58,595 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 17:24:58,595 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 17:24:58,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:24:58,596 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:24:58,596 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:24:58,596 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:24:58,597 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:24:58,597 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:24:58,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:24:58,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:24:58,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:24:58,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:24:58,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:24:58,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:24:58,599 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:24:58,599 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:24:58,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:24:58,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:24:58,600 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_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 [2021-11-23 17:24:59,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:24:59,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:24:59,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:24:59,097 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:24:59,098 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:24:59,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2021-11-23 17:24:59,188 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/data/285d5fc84/c67238a3a43c44df942b8e9458a5025f/FLAG14afd8ed0 [2021-11-23 17:25:00,094 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:25:00,097 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2021-11-23 17:25:00,134 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/data/285d5fc84/c67238a3a43c44df942b8e9458a5025f/FLAG14afd8ed0 [2021-11-23 17:25:00,212 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/data/285d5fc84/c67238a3a43c44df942b8e9458a5025f [2021-11-23 17:25:00,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:25:00,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:25:00,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:25:00,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:25:00,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:25:00,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:25:00" (1/1) ... [2021-11-23 17:25:00,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b19aef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:00, skipping insertion in model container [2021-11-23 17:25:00,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:25:00" (1/1) ... [2021-11-23 17:25:00,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:25:00,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:25:00,916 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_f8599108-dbbf-4baf-86fd-848ba5d181a2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i[33021,33034] [2021-11-23 17:25:01,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:25:01,066 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 17:25:01,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:25:01,148 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_f8599108-dbbf-4baf-86fd-848ba5d181a2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i[33021,33034] [2021-11-23 17:25:01,224 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:25:01,240 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:25:01,290 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_f8599108-dbbf-4baf-86fd-848ba5d181a2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i[33021,33034] [2021-11-23 17:25:01,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:25:01,480 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:25:01,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:01 WrapperNode [2021-11-23 17:25:01,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:25:01,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:25:01,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:25:01,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:25:01,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:01" (1/1) ... [2021-11-23 17:25:01,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:01" (1/1) ... [2021-11-23 17:25:01,657 INFO L137 Inliner]: procedures = 180, calls = 186, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 628 [2021-11-23 17:25:01,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:25:01,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:25:01,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:25:01,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:25:01,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:01" (1/1) ... [2021-11-23 17:25:01,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:01" (1/1) ... [2021-11-23 17:25:01,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:01" (1/1) ... [2021-11-23 17:25:01,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:01" (1/1) ... [2021-11-23 17:25:01,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:01" (1/1) ... [2021-11-23 17:25:01,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:01" (1/1) ... [2021-11-23 17:25:01,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:01" (1/1) ... [2021-11-23 17:25:01,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:25:01,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:25:01,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:25:01,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:25:01,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:01" (1/1) ... [2021-11-23 17:25:01,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:25:01,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:25:01,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:25:01,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:25:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 17:25:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 17:25:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 17:25:01,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 17:25:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 17:25:01,871 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 17:25:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:25:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:25:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:25:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 17:25:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:25:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:25:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 17:25:01,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:25:01,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:25:01,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:25:02,059 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:25:02,061 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:25:02,066 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 17:25:05,912 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:25:05,938 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:25:05,948 INFO L301 CfgBuilder]: Removed 31 assume(true) statements. [2021-11-23 17:25:05,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:25:05 BoogieIcfgContainer [2021-11-23 17:25:05,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:25:05,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:25:05,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:25:05,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:25:05,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:25:00" (1/3) ... [2021-11-23 17:25:05,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de4a815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:25:05, skipping insertion in model container [2021-11-23 17:25:05,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:01" (2/3) ... [2021-11-23 17:25:05,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de4a815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:25:05, skipping insertion in model container [2021-11-23 17:25:05,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:25:05" (3/3) ... [2021-11-23 17:25:05,971 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test1-1.i [2021-11-23 17:25:05,979 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:25:05,980 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 330 error locations. [2021-11-23 17:25:06,039 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:25:06,048 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 [2021-11-23 17:25:06,050 INFO L340 AbstractCegarLoop]: Starting to check reachability of 330 error locations. [2021-11-23 17:25:06,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 668 states, 325 states have (on average 2.230769230769231) internal successors, (725), 662 states have internal predecessors, (725), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 17:25:06,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 17:25:06,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:25:06,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 17:25:06,102 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 326 more)] === [2021-11-23 17:25:06,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:25:06,115 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-11-23 17:25:06,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:25:06,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099630219] [2021-11-23 17:25:06,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:25:06,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:25:06,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:25:06,140 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:25:06,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:25:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:25:06,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 17:25:06,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:25:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:25:06,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:25:06,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:25:06,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099630219] [2021-11-23 17:25:06,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099630219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:25:06,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:25:06,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:25:06,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737481790] [2021-11-23 17:25:06,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:25:06,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 17:25:06,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:25:06,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 17:25:06,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 17:25:06,459 INFO L87 Difference]: Start difference. First operand has 668 states, 325 states have (on average 2.230769230769231) internal successors, (725), 662 states have internal predecessors, (725), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) 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) [2021-11-23 17:25:06,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:25:06,576 INFO L93 Difference]: Finished difference Result 659 states and 706 transitions. [2021-11-23 17:25:06,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 17:25:06,579 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 [2021-11-23 17:25:06,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:25:06,617 INFO L225 Difference]: With dead ends: 659 [2021-11-23 17:25:06,618 INFO L226 Difference]: Without dead ends: 657 [2021-11-23 17:25:06,620 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 [2021-11-23 17:25:06,625 INFO L933 BasicCegarLoop]: 706 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, 706 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 [2021-11-23 17:25:06,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 17:25:06,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-11-23 17:25:06,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2021-11-23 17:25:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 320 states have (on average 2.11875) internal successors, (678), 651 states have internal predecessors, (678), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 17:25:06,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 704 transitions. [2021-11-23 17:25:06,736 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 704 transitions. Word has length 5 [2021-11-23 17:25:06,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:25:06,736 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 704 transitions. [2021-11-23 17:25:06,737 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) [2021-11-23 17:25:06,737 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 704 transitions. [2021-11-23 17:25:06,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 17:25:06,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:25:06,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 17:25:06,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:25:06,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:25:06,952 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 326 more)] === [2021-11-23 17:25:06,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:25:06,953 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-11-23 17:25:06,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:25:06,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213654890] [2021-11-23 17:25:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:25:06,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:25:06,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:25:06,956 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:25:06,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 17:25:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:25:07,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 17:25:07,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:25:07,178 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 [2021-11-23 17:25:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:25:07,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:25:07,206 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:25:07,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213654890] [2021-11-23 17:25:07,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213654890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:25:07,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:25:07,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:25:07,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220363262] [2021-11-23 17:25:07,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:25:07,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:25:07,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:25:07,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:25:07,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:25:07,218 INFO L87 Difference]: Start difference. First operand 657 states and 704 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) [2021-11-23 17:25:08,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:25:08,878 INFO L93 Difference]: Finished difference Result 615 states and 663 transitions. [2021-11-23 17:25:08,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:25:08,879 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 [2021-11-23 17:25:08,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:25:08,885 INFO L225 Difference]: With dead ends: 615 [2021-11-23 17:25:08,885 INFO L226 Difference]: Without dead ends: 615 [2021-11-23 17:25:08,886 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 [2021-11-23 17:25:08,887 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 596 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-23 17:25:08,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 351 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-23 17:25:08,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-11-23 17:25:08,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 608. [2021-11-23 17:25:08,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 320 states have (on average 1.965625) internal successors, (629), 602 states have internal predecessors, (629), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 17:25:08,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 655 transitions. [2021-11-23 17:25:08,918 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 655 transitions. Word has length 5 [2021-11-23 17:25:08,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:25:08,918 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 655 transitions. [2021-11-23 17:25:08,919 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) [2021-11-23 17:25:08,919 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 655 transitions. [2021-11-23 17:25:08,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 17:25:08,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:25:08,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 17:25:08,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-23 17:25:09,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:25:09,132 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 326 more)] === [2021-11-23 17:25:09,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:25:09,133 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-11-23 17:25:09,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:25:09,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020957622] [2021-11-23 17:25:09,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:25:09,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:25:09,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:25:09,135 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:25:09,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 17:25:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:25:09,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 17:25:09,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:25:09,276 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 [2021-11-23 17:25:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:25:09,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:25:09,317 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:25:09,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020957622] [2021-11-23 17:25:09,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020957622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:25:09,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:25:09,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:25:09,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759177042] [2021-11-23 17:25:09,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:25:09,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:25:09,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:25:09,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:25:09,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:25:09,320 INFO L87 Difference]: Start difference. First operand 608 states and 655 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) [2021-11-23 17:25:11,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:25:11,390 INFO L93 Difference]: Finished difference Result 675 states and 726 transitions. [2021-11-23 17:25:11,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:25:11,391 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 [2021-11-23 17:25:11,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:25:11,396 INFO L225 Difference]: With dead ends: 675 [2021-11-23 17:25:11,396 INFO L226 Difference]: Without dead ends: 675 [2021-11-23 17:25:11,397 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 [2021-11-23 17:25:11,398 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 254 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 17:25:11,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 752 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 17:25:11,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-11-23 17:25:11,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 630. [2021-11-23 17:25:11,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 352 states have (on average 1.9460227272727273) internal successors, (685), 624 states have internal predecessors, (685), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 17:25:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 711 transitions. [2021-11-23 17:25:11,421 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 711 transitions. Word has length 5 [2021-11-23 17:25:11,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:25:11,421 INFO L470 AbstractCegarLoop]: Abstraction has 630 states and 711 transitions. [2021-11-23 17:25:11,421 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) [2021-11-23 17:25:11,421 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 711 transitions. [2021-11-23 17:25:11,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 17:25:11,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:25:11,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 17:25:11,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 17:25:11,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:25:11,636 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 326 more)] === [2021-11-23 17:25:11,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:25:11,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1156735106, now seen corresponding path program 1 times [2021-11-23 17:25:11,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:25:11,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252511663] [2021-11-23 17:25:11,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:25:11,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:25:11,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:25:11,639 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:25:11,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 17:25:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:25:11,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:25:11,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:25:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:25:11,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:25:11,760 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:25:11,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252511663] [2021-11-23 17:25:11,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252511663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:25:11,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:25:11,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 17:25:11,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936186245] [2021-11-23 17:25:11,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:25:11,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:25:11,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:25:11,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:25:11,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:25:11,774 INFO L87 Difference]: Start difference. First operand 630 states and 711 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) [2021-11-23 17:25:11,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:25:11,887 INFO L93 Difference]: Finished difference Result 1211 states and 1353 transitions. [2021-11-23 17:25:11,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:25:11,891 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 [2021-11-23 17:25:11,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:25:11,901 INFO L225 Difference]: With dead ends: 1211 [2021-11-23 17:25:11,901 INFO L226 Difference]: Without dead ends: 1211 [2021-11-23 17:25:11,901 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 [2021-11-23 17:25:11,903 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 569 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1505 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 [2021-11-23 17:25:11,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 1505 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 17:25:11,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-11-23 17:25:11,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 631. [2021-11-23 17:25:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 353 states have (on average 1.9433427762039661) internal successors, (686), 625 states have internal predecessors, (686), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 17:25:11,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 712 transitions. [2021-11-23 17:25:11,935 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 712 transitions. Word has length 6 [2021-11-23 17:25:11,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:25:11,935 INFO L470 AbstractCegarLoop]: Abstraction has 631 states and 712 transitions. [2021-11-23 17:25:11,935 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) [2021-11-23 17:25:11,936 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 712 transitions. [2021-11-23 17:25:11,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 17:25:11,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:25:11,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:25:11,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 17:25:12,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:25:12,150 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 326 more)] === [2021-11-23 17:25:12,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:25:12,151 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-11-23 17:25:12,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:25:12,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056462971] [2021-11-23 17:25:12,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:25:12,152 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:25:12,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:25:12,153 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:25:12,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 17:25:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:25:12,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:25:12,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:25:12,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:25:12,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:25:12,348 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:25:12,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056462971] [2021-11-23 17:25:12,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056462971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:25:12,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:25:12,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 17:25:12,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777716635] [2021-11-23 17:25:12,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:25:12,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:25:12,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:25:12,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:25:12,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:25:12,351 INFO L87 Difference]: Start difference. First operand 631 states and 712 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) [2021-11-23 17:25:12,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:25:12,400 INFO L93 Difference]: Finished difference Result 595 states and 675 transitions. [2021-11-23 17:25:12,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:25:12,400 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 [2021-11-23 17:25:12,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:25:12,407 INFO L225 Difference]: With dead ends: 595 [2021-11-23 17:25:12,407 INFO L226 Difference]: Without dead ends: 595 [2021-11-23 17:25:12,408 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 [2021-11-23 17:25:12,411 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 563 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 627 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 [2021-11-23 17:25:12,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 627 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 17:25:12,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-11-23 17:25:12,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 589. [2021-11-23 17:25:12,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 335 states have (on average 1.9194029850746268) internal successors, (643), 583 states have internal predecessors, (643), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 17:25:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 669 transitions. [2021-11-23 17:25:12,456 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 669 transitions. Word has length 11 [2021-11-23 17:25:12,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:25:12,457 INFO L470 AbstractCegarLoop]: Abstraction has 589 states and 669 transitions. [2021-11-23 17:25:12,457 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) [2021-11-23 17:25:12,458 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 669 transitions. [2021-11-23 17:25:12,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 17:25:12,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:25:12,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:25:12,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 17:25:12,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:25:12,664 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 326 more)] === [2021-11-23 17:25:12,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:25:12,665 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-11-23 17:25:12,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:25:12,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677690141] [2021-11-23 17:25:12,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:25:12,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:25:12,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:25:12,667 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:25:12,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 17:25:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:25:12,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 17:25:12,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:25:12,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:25:12,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:25:12,875 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:25:12,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677690141] [2021-11-23 17:25:12,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677690141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:25:12,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:25:12,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 17:25:12,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822974157] [2021-11-23 17:25:12,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:25:12,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 17:25:12,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:25:12,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 17:25:12,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:25:12,878 INFO L87 Difference]: Start difference. First operand 589 states and 669 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) [2021-11-23 17:25:12,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:25:12,979 INFO L93 Difference]: Finished difference Result 574 states and 647 transitions. [2021-11-23 17:25:12,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 17:25:12,979 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 [2021-11-23 17:25:12,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:25:12,984 INFO L225 Difference]: With dead ends: 574 [2021-11-23 17:25:12,984 INFO L226 Difference]: Without dead ends: 574 [2021-11-23 17:25:12,985 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 [2021-11-23 17:25:12,986 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 534 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1127 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 [2021-11-23 17:25:12,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [547 Valid, 1127 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 17:25:12,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-11-23 17:25:13,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 567. [2021-11-23 17:25:13,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 327 states have (on average 1.8776758409785932) internal successors, (614), 561 states have internal predecessors, (614), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 17:25:13,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 640 transitions. [2021-11-23 17:25:13,007 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 640 transitions. Word has length 13 [2021-11-23 17:25:13,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:25:13,007 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 640 transitions. [2021-11-23 17:25:13,007 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) [2021-11-23 17:25:13,008 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 640 transitions. [2021-11-23 17:25:13,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 17:25:13,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:25:13,009 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] [2021-11-23 17:25:13,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 17:25:13,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:25:13,223 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 326 more)] === [2021-11-23 17:25:13,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:25:13,224 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-11-23 17:25:13,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:25:13,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488038699] [2021-11-23 17:25:13,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:25:13,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:25:13,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:25:13,226 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:25:13,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 17:25:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:25:13,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 17:25:13,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:25:13,407 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 [2021-11-23 17:25:13,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:25:13,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:25:13,555 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:25:13,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488038699] [2021-11-23 17:25:13,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488038699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:25:13,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:25:13,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 17:25:13,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321678516] [2021-11-23 17:25:13,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:25:13,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 17:25:13,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:25:13,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 17:25:13,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:25:13,562 INFO L87 Difference]: Start difference. First operand 567 states and 640 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) [2021-11-23 17:25:13,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 17:25:13,828 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 [2021-11-23 17:25:13,829 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 164 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 17:25:13,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 73 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 17:25:13,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-23 17:25:14,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:25:14,044 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructOldVarsAssignment(OldVarsAssignmentCache.java:125) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getOldVarsAssignment(OldVarsAssignmentCache.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:387) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkReturn(IncrementalHoareTripleChecker.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkReturn(ChainingHoareTripleChecker.java:486) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkReturn(ChainingHoareTripleChecker.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkReturn(CachingHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$ReturnSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:442) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.returnSuccessors(TotalizeNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.returnSuccessors(ComplementDeterministicNwa.java:142) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessors(ProductNwa.java:284) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessorsGivenHier(ProductNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addReturnsAndSuccessors(NestedWordAutomatonReachableStates.java:1118) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:950) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:25:14,049 INFO L158 Benchmark]: Toolchain (without parser) took 13831.78ms. Allocated memory was 62.9MB in the beginning and 121.6MB in the end (delta: 58.7MB). Free memory was 40.6MB in the beginning and 45.1MB in the end (delta: -4.5MB). Peak memory consumption was 55.4MB. Max. memory is 16.1GB. [2021-11-23 17:25:14,049 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 62.9MB. Free memory is still 44.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:25:14,050 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1263.19ms. Allocated memory was 62.9MB in the beginning and 90.2MB in the end (delta: 27.3MB). Free memory was 40.4MB in the beginning and 64.2MB in the end (delta: -23.8MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2021-11-23 17:25:14,050 INFO L158 Benchmark]: Boogie Procedure Inliner took 189.26ms. Allocated memory is still 90.2MB. Free memory was 64.2MB in the beginning and 59.3MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 17:25:14,051 INFO L158 Benchmark]: Boogie Preprocessor took 100.44ms. Allocated memory is still 90.2MB. Free memory was 59.3MB in the beginning and 54.0MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:25:14,051 INFO L158 Benchmark]: RCFGBuilder took 4181.85ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 54.0MB in the beginning and 91.2MB in the end (delta: -37.2MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2021-11-23 17:25:14,052 INFO L158 Benchmark]: TraceAbstraction took 8090.39ms. Allocated memory is still 121.6MB. Free memory was 90.5MB in the beginning and 45.1MB in the end (delta: 45.4MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. [2021-11-23 17:25:14,054 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 62.9MB. Free memory is still 44.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1263.19ms. Allocated memory was 62.9MB in the beginning and 90.2MB in the end (delta: 27.3MB). Free memory was 40.4MB in the beginning and 64.2MB in the end (delta: -23.8MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 189.26ms. Allocated memory is still 90.2MB. Free memory was 64.2MB in the beginning and 59.3MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 100.44ms. Allocated memory is still 90.2MB. Free memory was 59.3MB in the beginning and 54.0MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 4181.85ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 54.0MB in the beginning and 91.2MB in the end (delta: -37.2MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. * TraceAbstraction took 8090.39ms. Allocated memory is still 121.6MB. Free memory was 90.5MB in the beginning and 45.1MB in the end (delta: 45.4MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:25:14,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8599108-dbbf-4baf-86fd-848ba5d181a2/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable