./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.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_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/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_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/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_cfdec1f6-b748-4fed-9d59-132744ccfdcf/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 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:11:36,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:11:36,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:11:36,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:11:36,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:11:36,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:11:36,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:11:36,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:11:36,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:11:36,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:11:36,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:11:36,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:11:36,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:11:36,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:11:36,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:11:36,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:11:36,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:11:36,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:11:36,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:11:36,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:11:36,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:11:36,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:11:36,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:11:36,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:11:36,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:11:36,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:11:36,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:11:36,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:11:36,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:11:36,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:11:36,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:11:36,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:11:36,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:11:36,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:11:36,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:11:36,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:11:36,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:11:36,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:11:36,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:11:36,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:11:36,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:11:36,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 17:11:36,868 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:11:36,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:11:36,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:11:36,871 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:11:36,872 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:11:36,872 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:11:36,872 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:11:36,873 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:11:36,873 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:11:36,873 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:11:36,874 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:11:36,875 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:11:36,875 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:11:36,875 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:11:36,876 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:11:36,876 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:11:36,876 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:11:36,877 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:11:36,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 17:11:36,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 17:11:36,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:11:36,878 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:11:36,878 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 17:11:36,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:11:36,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:11:36,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:11:36,881 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 17:11:36,881 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 17:11:36,882 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 17:11:36,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:11:36,882 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:11:36,883 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:11:36,883 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:11:36,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:11:36,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:11:36,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:11:36,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:11:36,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:11:36,885 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:11:36,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:11:36,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:11:36,885 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:11:36,885 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_cfdec1f6-b748-4fed-9d59-132744ccfdcf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f [2021-11-23 17:11:37,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:11:37,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:11:37,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:11:37,230 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:11:37,231 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:11:37,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2021-11-23 17:11:37,305 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/data/afad5e198/219f1d84af134a99a7aa00980d639f11/FLAG7ec64b831 [2021-11-23 17:11:37,955 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:11:37,956 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2021-11-23 17:11:37,999 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/data/afad5e198/219f1d84af134a99a7aa00980d639f11/FLAG7ec64b831 [2021-11-23 17:11:38,172 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/data/afad5e198/219f1d84af134a99a7aa00980d639f11 [2021-11-23 17:11:38,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:11:38,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:11:38,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:11:38,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:11:38,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:11:38,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:11:38" (1/1) ... [2021-11-23 17:11:38,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44bd974a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:38, skipping insertion in model container [2021-11-23 17:11:38,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:11:38" (1/1) ... [2021-11-23 17:11:38,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:11:38,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:11:38,794 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_cfdec1f6-b748-4fed-9d59-132744ccfdcf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[33021,33034] [2021-11-23 17:11:38,908 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_cfdec1f6-b748-4fed-9d59-132744ccfdcf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44124,44137] [2021-11-23 17:11:38,909 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_cfdec1f6-b748-4fed-9d59-132744ccfdcf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44245,44258] [2021-11-23 17:11:38,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:11:38,942 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 17:11:38,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a187ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:38, skipping insertion in model container [2021-11-23 17:11:38,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:11:38,944 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 17:11:38,946 INFO L158 Benchmark]: Toolchain (without parser) took 755.74ms. Allocated memory is still 100.7MB. Free memory was 79.7MB in the beginning and 66.9MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 17:11:38,947 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 100.7MB. Free memory is still 76.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:11:38,949 INFO L158 Benchmark]: CACSL2BoogieTranslator took 751.73ms. Allocated memory is still 100.7MB. Free memory was 79.7MB in the beginning and 66.9MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 17:11:38,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 100.7MB. Free memory is still 76.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 751.73ms. Allocated memory is still 100.7MB. Free memory was 79.7MB in the beginning and 66.9MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/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_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/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_cfdec1f6-b748-4fed-9d59-132744ccfdcf/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 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:11:41,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:11:41,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:11:41,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:11:41,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:11:41,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:11:41,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:11:41,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:11:41,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:11:41,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:11:41,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:11:41,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:11:41,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:11:41,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:11:41,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:11:41,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:11:41,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:11:41,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:11:41,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:11:41,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:11:41,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:11:41,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:11:41,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:11:41,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:11:41,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:11:41,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:11:41,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:11:41,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:11:41,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:11:41,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:11:41,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:11:41,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:11:41,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:11:41,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:11:41,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:11:41,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:11:41,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:11:41,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:11:41,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:11:41,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:11:41,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:11:41,826 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 17:11:41,859 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:11:41,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:11:41,859 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:11:41,860 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:11:41,861 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:11:41,861 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:11:41,861 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:11:41,861 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:11:41,862 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:11:41,862 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:11:41,862 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:11:41,862 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:11:41,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 17:11:41,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 17:11:41,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:11:41,864 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:11:41,864 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 17:11:41,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:11:41,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:11:41,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:11:41,865 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 17:11:41,866 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 17:11:41,866 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 17:11:41,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:11:41,866 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:11:41,866 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:11:41,867 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:11:41,867 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:11:41,867 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:11:41,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:11:41,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:11:41,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:11:41,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:11:41,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:11:41,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:11:41,869 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:11:41,869 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:11:41,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:11:41,870 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:11:41,870 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_cfdec1f6-b748-4fed-9d59-132744ccfdcf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f [2021-11-23 17:11:42,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:11:42,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:11:42,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:11:42,366 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:11:42,367 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:11:42,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2021-11-23 17:11:42,466 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/data/3f0e8ae05/4096f554d7f54ed692bd3fb10ee3efb6/FLAG839ea8179 [2021-11-23 17:11:43,333 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:11:43,334 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2021-11-23 17:11:43,369 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/data/3f0e8ae05/4096f554d7f54ed692bd3fb10ee3efb6/FLAG839ea8179 [2021-11-23 17:11:43,492 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/data/3f0e8ae05/4096f554d7f54ed692bd3fb10ee3efb6 [2021-11-23 17:11:43,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:11:43,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:11:43,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:11:43,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:11:43,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:11:43,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:11:43" (1/1) ... [2021-11-23 17:11:43,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7157446b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:43, skipping insertion in model container [2021-11-23 17:11:43,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:11:43" (1/1) ... [2021-11-23 17:11:43,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:11:43,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:11:44,220 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_cfdec1f6-b748-4fed-9d59-132744ccfdcf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[33021,33034] [2021-11-23 17:11:44,387 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_cfdec1f6-b748-4fed-9d59-132744ccfdcf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44124,44137] [2021-11-23 17:11:44,389 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_cfdec1f6-b748-4fed-9d59-132744ccfdcf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44245,44258] [2021-11-23 17:11:44,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:11:44,475 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 17:11:44,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:11:44,542 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_cfdec1f6-b748-4fed-9d59-132744ccfdcf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[33021,33034] [2021-11-23 17:11:44,681 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_cfdec1f6-b748-4fed-9d59-132744ccfdcf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44124,44137] [2021-11-23 17:11:44,697 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_cfdec1f6-b748-4fed-9d59-132744ccfdcf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44245,44258] [2021-11-23 17:11:44,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:11:44,729 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:11:44,794 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_cfdec1f6-b748-4fed-9d59-132744ccfdcf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[33021,33034] [2021-11-23 17:11:44,902 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_cfdec1f6-b748-4fed-9d59-132744ccfdcf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44124,44137] [2021-11-23 17:11:44,904 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_cfdec1f6-b748-4fed-9d59-132744ccfdcf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44245,44258] [2021-11-23 17:11:44,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:11:45,008 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:11:45,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:45 WrapperNode [2021-11-23 17:11:45,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:11:45,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:11:45,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:11:45,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:11:45,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:45" (1/1) ... [2021-11-23 17:11:45,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:45" (1/1) ... [2021-11-23 17:11:45,206 INFO L137 Inliner]: procedures = 179, calls = 328, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1175 [2021-11-23 17:11:45,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:11:45,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:11:45,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:11:45,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:11:45,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:45" (1/1) ... [2021-11-23 17:11:45,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:45" (1/1) ... [2021-11-23 17:11:45,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:45" (1/1) ... [2021-11-23 17:11:45,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:45" (1/1) ... [2021-11-23 17:11:45,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:45" (1/1) ... [2021-11-23 17:11:45,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:45" (1/1) ... [2021-11-23 17:11:45,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:45" (1/1) ... [2021-11-23 17:11:45,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:11:45,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:11:45,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:11:45,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:11:45,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:45" (1/1) ... [2021-11-23 17:11:45,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:11:45,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:11:45,411 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:11:45,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:11:45,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 17:11:45,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 17:11:45,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 17:11:45,479 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 17:11:45,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:11:45,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:11:45,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 17:11:45,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:11:45,480 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 17:11:45,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:11:45,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:11:45,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 17:11:45,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:11:45,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:11:45,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:11:45,908 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:11:45,910 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:11:45,916 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 17:11:52,853 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:11:52,871 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:11:52,872 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-23 17:11:52,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:11:52 BoogieIcfgContainer [2021-11-23 17:11:52,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:11:52,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:11:52,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:11:52,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:11:52,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:11:43" (1/3) ... [2021-11-23 17:11:52,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa20e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:11:52, skipping insertion in model container [2021-11-23 17:11:52,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:45" (2/3) ... [2021-11-23 17:11:52,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa20e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:11:52, skipping insertion in model container [2021-11-23 17:11:52,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:11:52" (3/3) ... [2021-11-23 17:11:52,889 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test7-2.i [2021-11-23 17:11:52,895 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:11:52,896 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 635 error locations. [2021-11-23 17:11:52,964 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:11:52,984 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 17:11:52,984 INFO L340 AbstractCegarLoop]: Starting to check reachability of 635 error locations. [2021-11-23 17:11:53,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 1249 states, 612 states have (on average 2.2663398692810457) internal successors, (1387), 1244 states have internal predecessors, (1387), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 17:11:53,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 17:11:53,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:11:53,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 17:11:53,049 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-23 17:11:53,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:11:53,061 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-23 17:11:53,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:11:53,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790217659] [2021-11-23 17:11:53,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:53,078 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:11:53,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:11:53,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:11:53,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:11:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:53,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 17:11:53,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:53,512 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 17:11:53,535 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 17:11:53,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:11:53,536 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:11:53,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790217659] [2021-11-23 17:11:53,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790217659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:11:53,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:11:53,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:11:53,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447306251] [2021-11-23 17:11:53,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:11:53,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:11:53,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:11:53,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:11:53,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:11:53,602 INFO L87 Difference]: Start difference. First operand has 1249 states, 612 states have (on average 2.2663398692810457) internal successors, (1387), 1244 states have internal predecessors, (1387), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:56,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:11:56,688 INFO L93 Difference]: Finished difference Result 1417 states and 1492 transitions. [2021-11-23 17:11:56,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:11:56,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-23 17:11:56,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:11:56,719 INFO L225 Difference]: With dead ends: 1417 [2021-11-23 17:11:56,720 INFO L226 Difference]: Without dead ends: 1415 [2021-11-23 17:11:56,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:11:56,727 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 1160 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-23 17:11:56,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 893 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-23 17:11:56,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2021-11-23 17:11:56,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1230. [2021-11-23 17:11:56,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 610 states have (on average 2.1163934426229507) internal successors, (1291), 1225 states have internal predecessors, (1291), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 17:11:56,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1297 transitions. [2021-11-23 17:11:56,856 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1297 transitions. Word has length 3 [2021-11-23 17:11:56,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:11:56,857 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 1297 transitions. [2021-11-23 17:11:56,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:56,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1297 transitions. [2021-11-23 17:11:56,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 17:11:56,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:11:56,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 17:11:56,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:11:57,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:11:57,076 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-23 17:11:57,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:11:57,077 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-23 17:11:57,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:11:57,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055799113] [2021-11-23 17:11:57,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:57,078 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:11:57,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:11:57,081 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:11:57,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 17:11:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:57,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 17:11:57,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:57,244 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 17:11:57,263 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 17:11:57,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:11:57,264 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:11:57,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055799113] [2021-11-23 17:11:57,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055799113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:11:57,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:11:57,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:11:57,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157057455] [2021-11-23 17:11:57,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:11:57,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:11:57,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:11:57,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:11:57,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:11:57,269 INFO L87 Difference]: Start difference. First operand 1230 states and 1297 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:12:02,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:12:02,002 INFO L93 Difference]: Finished difference Result 1819 states and 1926 transitions. [2021-11-23 17:12:02,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:12:02,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-23 17:12:02,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:12:02,017 INFO L225 Difference]: With dead ends: 1819 [2021-11-23 17:12:02,018 INFO L226 Difference]: Without dead ends: 1819 [2021-11-23 17:12:02,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:12:02,020 INFO L933 BasicCegarLoop]: 1012 mSDtfsCounter, 629 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-23 17:12:02,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [629 Valid, 1690 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-23 17:12:02,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2021-11-23 17:12:02,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1431. [2021-11-23 17:12:02,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 812 states have (on average 2.0985221674876846) internal successors, (1704), 1426 states have internal predecessors, (1704), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 17:12:02,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1710 transitions. [2021-11-23 17:12:02,088 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1710 transitions. Word has length 3 [2021-11-23 17:12:02,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:12:02,090 INFO L470 AbstractCegarLoop]: Abstraction has 1431 states and 1710 transitions. [2021-11-23 17:12:02,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:12:02,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1710 transitions. [2021-11-23 17:12:02,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 17:12:02,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:12:02,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:12:02,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 17:12:02,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:12:02,313 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-23 17:12:02,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:12:02,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2021-11-23 17:12:02,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:12:02,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103135360] [2021-11-23 17:12:02,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:12:02,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:12:02,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:12:02,322 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:12:02,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 17:12:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:12:02,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 17:12:02,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:12:02,557 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 17:12:02,566 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 17:12:02,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:12:02,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-23 17:12:02,673 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:12:02,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-23 17:12:02,712 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 17:12:02,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:12:02,713 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:12:02,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103135360] [2021-11-23 17:12:02,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103135360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:12:02,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:12:02,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 17:12:02,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43146760] [2021-11-23 17:12:02,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:12:02,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 17:12:02,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:12:02,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 17:12:02,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:12:02,717 INFO L87 Difference]: Start difference. First operand 1431 states and 1710 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 17:12:07,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:12:07,674 INFO L93 Difference]: Finished difference Result 1609 states and 1899 transitions. [2021-11-23 17:12:07,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 17:12:07,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-11-23 17:12:07,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:12:07,687 INFO L225 Difference]: With dead ends: 1609 [2021-11-23 17:12:07,687 INFO L226 Difference]: Without dead ends: 1609 [2021-11-23 17:12:07,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:12:07,693 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 1450 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-23 17:12:07,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1453 Valid, 507 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-23 17:12:07,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2021-11-23 17:12:07,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1219. [2021-11-23 17:12:07,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 610 states have (on average 2.09672131147541) internal successors, (1279), 1214 states have internal predecessors, (1279), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 17:12:07,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1285 transitions. [2021-11-23 17:12:07,752 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1285 transitions. Word has length 7 [2021-11-23 17:12:07,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:12:07,753 INFO L470 AbstractCegarLoop]: Abstraction has 1219 states and 1285 transitions. [2021-11-23 17:12:07,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 17:12:07,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1285 transitions. [2021-11-23 17:12:07,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 17:12:07,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:12:07,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:12:07,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 17:12:07,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:12:07,969 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-23 17:12:07,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:12:07,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-23 17:12:07,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:12:07,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990656692] [2021-11-23 17:12:07,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:12:07,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:12:07,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:12:07,975 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:12:08,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 17:12:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:12:08,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 17:12:08,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:12:08,196 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 17:12:08,218 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 17:12:08,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:12:08,218 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:12:08,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990656692] [2021-11-23 17:12:08,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990656692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:12:08,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:12:08,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:12:08,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839244530] [2021-11-23 17:12:08,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:12:08,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:12:08,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:12:08,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:12:08,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:12:08,230 INFO L87 Difference]: Start difference. First operand 1219 states and 1285 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:12:11,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:12:11,228 INFO L93 Difference]: Finished difference Result 1548 states and 1643 transitions. [2021-11-23 17:12:11,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:12:11,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 17:12:11,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:12:11,242 INFO L225 Difference]: With dead ends: 1548 [2021-11-23 17:12:11,242 INFO L226 Difference]: Without dead ends: 1548 [2021-11-23 17:12:11,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 17:12:11,244 INFO L933 BasicCegarLoop]: 1133 mSDtfsCounter, 973 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-23 17:12:11,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 1476 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-23 17:12:11,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-11-23 17:12:11,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1172. [2021-11-23 17:12:11,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 610 states have (on average 2.019672131147541) internal successors, (1232), 1167 states have internal predecessors, (1232), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 17:12:11,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1238 transitions. [2021-11-23 17:12:11,285 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1238 transitions. Word has length 8 [2021-11-23 17:12:11,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:12:11,286 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1238 transitions. [2021-11-23 17:12:11,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:12:11,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1238 transitions. [2021-11-23 17:12:11,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 17:12:11,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:12:11,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:12:11,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 17:12:11,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:12:11,501 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-23 17:12:11,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:12:11,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-23 17:12:11,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:12:11,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692963824] [2021-11-23 17:12:11,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:12:11,502 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:12:11,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:12:11,503 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:12:11,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 17:12:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:12:11,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 17:12:11,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:12:11,700 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 17:12:11,744 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 17:12:11,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:12:11,745 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:12:11,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692963824] [2021-11-23 17:12:11,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692963824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:12:11,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:12:11,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:12:11,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949461569] [2021-11-23 17:12:11,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:12:11,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:12:11,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:12:11,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:12:11,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:12:11,748 INFO L87 Difference]: Start difference. First operand 1172 states and 1238 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:12:15,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:12:15,397 INFO L93 Difference]: Finished difference Result 1627 states and 1725 transitions. [2021-11-23 17:12:15,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:12:15,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 17:12:15,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:12:15,409 INFO L225 Difference]: With dead ends: 1627 [2021-11-23 17:12:15,409 INFO L226 Difference]: Without dead ends: 1627 [2021-11-23 17:12:15,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 17:12:15,410 INFO L933 BasicCegarLoop]: 1339 mSDtfsCounter, 674 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-23 17:12:15,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 1855 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-23 17:12:15,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2021-11-23 17:12:15,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1194. [2021-11-23 17:12:15,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 642 states have (on average 2.0062305295950154) internal successors, (1288), 1189 states have internal predecessors, (1288), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 17:12:15,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1294 transitions. [2021-11-23 17:12:15,470 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1294 transitions. Word has length 8 [2021-11-23 17:12:15,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:12:15,471 INFO L470 AbstractCegarLoop]: Abstraction has 1194 states and 1294 transitions. [2021-11-23 17:12:15,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:12:15,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1294 transitions. [2021-11-23 17:12:15,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 17:12:15,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:12:15,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:12:15,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 17:12:15,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:12:15,692 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr526ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-23 17:12:15,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:12:15,693 INFO L85 PathProgramCache]: Analyzing trace with hash 871378613, now seen corresponding path program 1 times [2021-11-23 17:12:15,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:12:15,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491540587] [2021-11-23 17:12:15,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:12:15,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:12:15,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:12:15,696 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:12:15,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 17:12:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:12:15,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 17:12:15,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:12:15,980 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 17:12:15,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:12:15,981 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:12:15,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491540587] [2021-11-23 17:12:15,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491540587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:12:15,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:12:15,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 17:12:15,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427633384] [2021-11-23 17:12:15,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:12:15,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 17:12:15,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:12:15,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 17:12:15,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:12:15,984 INFO L87 Difference]: Start difference. First operand 1194 states and 1294 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:12:17,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:12:17,164 INFO L93 Difference]: Finished difference Result 1841 states and 1984 transitions. [2021-11-23 17:12:17,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 17:12:17,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 17:12:17,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:12:17,177 INFO L225 Difference]: With dead ends: 1841 [2021-11-23 17:12:17,178 INFO L226 Difference]: Without dead ends: 1841 [2021-11-23 17:12:17,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 17:12:17,182 INFO L933 BasicCegarLoop]: 1358 mSDtfsCounter, 754 mSDsluCounter, 2287 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 3645 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 17:12:17,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 3645 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 17:12:17,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2021-11-23 17:12:17,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1439. [2021-11-23 17:12:17,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 887 states have (on average 1.9706877113866967) internal successors, (1748), 1434 states have internal predecessors, (1748), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 17:12:17,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 1754 transitions. [2021-11-23 17:12:17,233 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 1754 transitions. Word has length 11 [2021-11-23 17:12:17,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:12:17,234 INFO L470 AbstractCegarLoop]: Abstraction has 1439 states and 1754 transitions. [2021-11-23 17:12:17,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:12:17,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 1754 transitions. [2021-11-23 17:12:17,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 17:12:17,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:12:17,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:12:17,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 17:12:17,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:12:17,449 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-23 17:12:17,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:12:17,450 INFO L85 PathProgramCache]: Analyzing trace with hash -702153283, now seen corresponding path program 1 times [2021-11-23 17:12:17,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:12:17,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002367876] [2021-11-23 17:12:17,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:12:17,451 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:12:17,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:12:17,452 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:12:17,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 17:12:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:12:17,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:12:17,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:12:17,692 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 17:12:17,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:12:17,693 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:12:17,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002367876] [2021-11-23 17:12:17,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002367876] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:12:17,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:12:17,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 17:12:17,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506991545] [2021-11-23 17:12:17,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:12:17,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:12:17,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:12:17,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:12:17,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:12:17,696 INFO L87 Difference]: Start difference. First operand 1439 states and 1754 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 17:12:17,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:12:17,751 INFO L93 Difference]: Finished difference Result 1601 states and 1902 transitions. [2021-11-23 17:12:17,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:12:17,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 17:12:17,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:12:17,762 INFO L225 Difference]: With dead ends: 1601 [2021-11-23 17:12:17,762 INFO L226 Difference]: Without dead ends: 1601 [2021-11-23 17:12:17,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 17:12:17,764 INFO L933 BasicCegarLoop]: 1182 mSDtfsCounter, 583 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1998 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 17:12:17,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 1998 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 17:12:17,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2021-11-23 17:12:17,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1379. [2021-11-23 17:12:17,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 851 states have (on average 1.9529964747356052) internal successors, (1662), 1374 states have internal predecessors, (1662), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 17:12:17,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1668 transitions. [2021-11-23 17:12:17,808 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1668 transitions. Word has length 13 [2021-11-23 17:12:17,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:12:17,809 INFO L470 AbstractCegarLoop]: Abstraction has 1379 states and 1668 transitions. [2021-11-23 17:12:17,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 17:12:17,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1668 transitions. [2021-11-23 17:12:17,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 17:12:17,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:12:17,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:12:17,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 17:12:18,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:12:18,039 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-23 17:12:18,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:12:18,040 INFO L85 PathProgramCache]: Analyzing trace with hash -459414345, now seen corresponding path program 1 times [2021-11-23 17:12:18,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:12:18,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902433443] [2021-11-23 17:12:18,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:12:18,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:12:18,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:12:18,041 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:12:18,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 17:12:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:12:18,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 17:12:18,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:12:18,272 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 17:12:18,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:12:18,273 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:12:18,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902433443] [2021-11-23 17:12:18,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902433443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:12:18,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:12:18,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 17:12:18,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133735536] [2021-11-23 17:12:18,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:12:18,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 17:12:18,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:12:18,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 17:12:18,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:12:18,276 INFO L87 Difference]: Start difference. First operand 1379 states and 1668 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:12:18,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:12:18,376 INFO L93 Difference]: Finished difference Result 1573 states and 1846 transitions. [2021-11-23 17:12:18,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 17:12:18,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 17:12:18,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:12:18,384 INFO L225 Difference]: With dead ends: 1573 [2021-11-23 17:12:18,384 INFO L226 Difference]: Without dead ends: 1573 [2021-11-23 17:12:18,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 17:12:18,385 INFO L933 BasicCegarLoop]: 1137 mSDtfsCounter, 554 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 3083 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 17:12:18,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 3083 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 17:12:18,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-11-23 17:12:18,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1349. [2021-11-23 17:12:18,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 835 states have (on average 1.9209580838323352) internal successors, (1604), 1344 states have internal predecessors, (1604), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 17:12:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1610 transitions. [2021-11-23 17:12:18,426 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1610 transitions. Word has length 15 [2021-11-23 17:12:18,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:12:18,427 INFO L470 AbstractCegarLoop]: Abstraction has 1349 states and 1610 transitions. [2021-11-23 17:12:18,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:12:18,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1610 transitions. [2021-11-23 17:12:18,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 17:12:18,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:12:18,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:12:18,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 17:12:18,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:12:18,650 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr634ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-23 17:12:18,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:12:18,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2058395604, now seen corresponding path program 1 times [2021-11-23 17:12:18,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:12:18,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794776261] [2021-11-23 17:12:18,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:12:18,651 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:12:18,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:12:18,652 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:12:18,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 17:12:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:12:18,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 17:12:18,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:12:18,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:12:18,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:12:18,981 INFO L354 Elim1Store]: treesize reduction 165, result has 13.6 percent of original size [2021-11-23 17:12:18,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 36 [2021-11-23 17:12:19,046 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-23 17:12:19,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 20 [2021-11-23 17:12:19,118 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 17:12:19,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:12:19,119 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:12:19,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794776261] [2021-11-23 17:12:19,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794776261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:12:19,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:12:19,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 17:12:19,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692656938] [2021-11-23 17:12:19,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:12:19,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 17:12:19,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:12:19,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 17:12:19,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:12:19,121 INFO L87 Difference]: Start difference. First operand 1349 states and 1610 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:12:20,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:12:20,891 INFO L93 Difference]: Finished difference Result 1785 states and 2105 transitions. [2021-11-23 17:12:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 17:12:20,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-23 17:12:20,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:12:20,900 INFO L225 Difference]: With dead ends: 1785 [2021-11-23 17:12:20,901 INFO L226 Difference]: Without dead ends: 1785 [2021-11-23 17:12:20,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:12:20,902 INFO L933 BasicCegarLoop]: 1108 mSDtfsCounter, 422 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 3244 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 17:12:20,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 3244 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 39 Unchecked, 1.7s Time] [2021-11-23 17:12:20,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2021-11-23 17:12:20,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1348. [2021-11-23 17:12:20,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 834 states have (on average 1.920863309352518) internal successors, (1602), 1343 states have internal predecessors, (1602), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 17:12:20,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1608 transitions. [2021-11-23 17:12:20,943 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1608 transitions. Word has length 16 [2021-11-23 17:12:20,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:12:20,943 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 1608 transitions. [2021-11-23 17:12:20,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:12:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1608 transitions. [2021-11-23 17:12:20,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 17:12:20,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:12:20,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:12:20,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-23 17:12:21,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:12:21,160 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-23 17:12:21,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:12:21,161 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-23 17:12:21,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:12:21,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970465587] [2021-11-23 17:12:21,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:12:21,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:12:21,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:12:21,163 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:12:21,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 17:12:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:12:21,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:12:21,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:12:21,452 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 17:12:21,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:12:21,452 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:12:21,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970465587] [2021-11-23 17:12:21,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970465587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:12:21,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:12:21,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 17:12:21,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914158853] [2021-11-23 17:12:21,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:12:21,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:12:21,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:12:21,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:12:21,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:12:21,455 INFO L87 Difference]: Start difference. First operand 1348 states and 1608 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 17:12:21,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:12:21,490 INFO L93 Difference]: Finished difference Result 1288 states and 1522 transitions. [2021-11-23 17:12:21,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:12:21,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 17:12:21,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:12:21,499 INFO L225 Difference]: With dead ends: 1288 [2021-11-23 17:12:21,499 INFO L226 Difference]: Without dead ends: 1288 [2021-11-23 17:12:21,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 17:12:21,501 INFO L933 BasicCegarLoop]: 1103 mSDtfsCounter, 1087 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 1125 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 17:12:21,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1090 Valid, 1125 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 17:12:21,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2021-11-23 17:12:21,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1288. [2021-11-23 17:12:21,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 798 states have (on average 1.899749373433584) internal successors, (1516), 1283 states have internal predecessors, (1516), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 17:12:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1522 transitions. [2021-11-23 17:12:21,539 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1522 transitions. Word has length 18 [2021-11-23 17:12:21,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:12:21,539 INFO L470 AbstractCegarLoop]: Abstraction has 1288 states and 1522 transitions. [2021-11-23 17:12:21,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 17:12:21,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1522 transitions. [2021-11-23 17:12:21,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 17:12:21,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:12:21,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:12:21,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 17:12:21,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:12:21,762 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-23 17:12:21,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:12:21,764 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-23 17:12:21,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:12:21,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217789920] [2021-11-23 17:12:21,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:12:21,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:12:21,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:12:21,766 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:12:21,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 17:12:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:12:22,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 17:12:22,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:12:22,108 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 17:12:22,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:12:22,108 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:12:22,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217789920] [2021-11-23 17:12:22,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217789920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:12:22,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:12:22,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 17:12:22,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725969918] [2021-11-23 17:12:22,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:12:22,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 17:12:22,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:12:22,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 17:12:22,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:12:22,112 INFO L87 Difference]: Start difference. First operand 1288 states and 1522 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:12:22,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:12:22,216 INFO L93 Difference]: Finished difference Result 1260 states and 1466 transitions. [2021-11-23 17:12:22,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 17:12:22,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-23 17:12:22,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:12:22,226 INFO L225 Difference]: With dead ends: 1260 [2021-11-23 17:12:22,226 INFO L226 Difference]: Without dead ends: 1260 [2021-11-23 17:12:22,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 17:12:22,227 INFO L933 BasicCegarLoop]: 1058 mSDtfsCounter, 1058 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 2131 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 17:12:22,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1061 Valid, 2131 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 17:12:22,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-11-23 17:12:22,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1258. [2021-11-23 17:12:22,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 782 states have (on average 1.8644501278772379) internal successors, (1458), 1253 states have internal predecessors, (1458), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 17:12:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1464 transitions. [2021-11-23 17:12:22,287 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1464 transitions. Word has length 20 [2021-11-23 17:12:22,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:12:22,287 INFO L470 AbstractCegarLoop]: Abstraction has 1258 states and 1464 transitions. [2021-11-23 17:12:22,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:12:22,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1464 transitions. [2021-11-23 17:12:22,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 17:12:22,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:12:22,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:12:22,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-23 17:12:22,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:12:22,505 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-23 17:12:22,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:12:22,506 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-23 17:12:22,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:12:22,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538396476] [2021-11-23 17:12:22,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:12:22,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:12:22,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:12:22,508 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:12:22,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 17:12:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:12:22,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 17:12:22,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:12:22,798 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 17:12:22,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:12:22,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:12:22,941 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:12:22,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538396476] [2021-11-23 17:12:22,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538396476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:12:22,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:12:22,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 17:12:22,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765165207] [2021-11-23 17:12:22,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:12:22,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 17:12:22,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:12:22,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 17:12:22,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:12:22,944 INFO L87 Difference]: Start difference. First operand 1258 states and 1464 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:12:23,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 17:12:23,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 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 17:12:23,193 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 104 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 17:12:23,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 68 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 17:12:23,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 17:12:23,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:12:23,395 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 17:12:23,400 INFO L158 Benchmark]: Toolchain (without parser) took 39902.43ms. Allocated memory was 71.3MB in the beginning and 155.2MB in the end (delta: 83.9MB). Free memory was 47.8MB in the beginning and 84.7MB in the end (delta: -36.9MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. [2021-11-23 17:12:23,401 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 52.4MB. Free memory was 32.5MB in the beginning and 32.5MB in the end (delta: 41.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:12:23,401 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1509.19ms. Allocated memory is still 71.3MB. Free memory was 47.5MB in the beginning and 50.2MB in the end (delta: -2.7MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2021-11-23 17:12:23,402 INFO L158 Benchmark]: Boogie Procedure Inliner took 196.08ms. Allocated memory is still 71.3MB. Free memory was 50.2MB in the beginning and 42.7MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 17:12:23,402 INFO L158 Benchmark]: Boogie Preprocessor took 161.83ms. Allocated memory is still 71.3MB. Free memory was 42.7MB in the beginning and 34.0MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:12:23,403 INFO L158 Benchmark]: RCFGBuilder took 7505.95ms. Allocated memory was 71.3MB in the beginning and 127.9MB in the end (delta: 56.6MB). Free memory was 34.0MB in the beginning and 54.4MB in the end (delta: -20.4MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. [2021-11-23 17:12:23,404 INFO L158 Benchmark]: TraceAbstraction took 30519.18ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 53.3MB in the beginning and 84.7MB in the end (delta: -31.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:12:23,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 52.4MB. Free memory was 32.5MB in the beginning and 32.5MB in the end (delta: 41.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1509.19ms. Allocated memory is still 71.3MB. Free memory was 47.5MB in the beginning and 50.2MB in the end (delta: -2.7MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 196.08ms. Allocated memory is still 71.3MB. Free memory was 50.2MB in the beginning and 42.7MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 161.83ms. Allocated memory is still 71.3MB. Free memory was 42.7MB in the beginning and 34.0MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 7505.95ms. Allocated memory was 71.3MB in the beginning and 127.9MB in the end (delta: 56.6MB). Free memory was 34.0MB in the beginning and 54.4MB in the end (delta: -20.4MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. * TraceAbstraction took 30519.18ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 53.3MB in the beginning and 84.7MB in the end (delta: -31.5MB). There was no memory consumed. 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 17:12:23,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdec1f6-b748-4fed-9d59-132744ccfdcf/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