./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:14:19,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:14:19,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:14:19,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:14:19,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:14:19,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:14:19,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:14:19,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:14:19,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:14:19,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:14:19,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:14:19,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:14:19,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:14:19,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:14:19,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:14:19,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:14:19,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:14:19,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:14:19,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:14:19,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:14:19,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:14:19,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:14:19,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:14:19,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:14:19,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:14:19,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:14:19,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:14:19,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:14:19,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:14:19,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:14:19,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:14:19,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:14:19,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:14:19,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:14:19,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:14:19,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:14:19,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:14:19,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:14:19,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:14:19,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:14:19,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:14:19,635 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:14:19,683 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:14:19,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:14:19,685 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:14:19,686 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:14:19,686 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:14:19,686 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:14:19,686 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:14:19,687 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:14:19,687 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:14:19,687 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:14:19,688 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:14:19,689 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:14:19,689 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:14:19,689 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:14:19,689 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:14:19,690 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:14:19,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:14:19,691 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:14:19,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:14:19,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:14:19,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:14:19,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:14:19,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:14:19,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:14:19,692 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:14:19,692 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:14:19,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:14:19,693 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:14:19,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:14:19,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:14:19,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:14:19,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:14:19,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:14:19,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:14:19,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:14:19,696 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:14:19,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:14:19,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:14:19,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:14:19,697 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:14:19,697 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_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d [2021-11-12 23:14:19,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:14:20,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:14:20,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:14:20,011 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:14:20,012 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:14:20,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2021-11-12 23:14:20,096 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/data/d82059fda/7ae6e4a3d34343838bcd535ce2b8dc12/FLAG96b8efe6b [2021-11-12 23:14:20,686 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:14:20,690 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2021-11-12 23:14:20,716 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/data/d82059fda/7ae6e4a3d34343838bcd535ce2b8dc12/FLAG96b8efe6b [2021-11-12 23:14:20,909 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/data/d82059fda/7ae6e4a3d34343838bcd535ce2b8dc12 [2021-11-12 23:14:20,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:14:20,912 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:14:20,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:14:20,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:14:20,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:14:20,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:14:20" (1/1) ... [2021-11-12 23:14:20,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3127cc50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:20, skipping insertion in model container [2021-11-12 23:14:20,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:14:20" (1/1) ... [2021-11-12 23:14:20,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:14:21,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:14:21,480 WARN L228 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_f53a9e5d-3364-4707-bb7a-80bed4f5c467/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[33021,33034] [2021-11-12 23:14:21,698 WARN L228 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_f53a9e5d-3364-4707-bb7a-80bed4f5c467/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[45234,45247] [2021-11-12 23:14:21,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:14:21,739 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) [2021-11-12 23:14:21,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@79672e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:21, skipping insertion in model container [2021-11-12 23:14:21,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:14:21,740 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:14:21,742 INFO L158 Benchmark]: Toolchain (without parser) took 828.88ms. Allocated memory is still 104.9MB. Free memory was 59.7MB in the beginning and 69.1MB in the end (delta: -9.4MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2021-11-12 23:14:21,743 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 104.9MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:14:21,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 826.03ms. Allocated memory is still 104.9MB. Free memory was 59.5MB in the beginning and 69.3MB in the end (delta: -9.8MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2021-11-12 23:14:21,746 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 104.9MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 826.03ms. Allocated memory is still 104.9MB. Free memory was 59.5MB in the beginning and 69.3MB in the end (delta: -9.8MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: 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_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:14:24,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:14:24,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:14:24,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:14:24,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:14:24,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:14:24,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:14:24,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:14:24,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:14:24,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:14:24,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:14:24,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:14:24,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:14:24,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:14:24,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:14:24,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:14:24,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:14:24,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:14:24,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:14:24,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:14:24,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:14:24,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:14:24,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:14:24,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:14:24,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:14:24,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:14:24,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:14:24,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:14:24,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:14:24,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:14:24,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:14:24,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:14:24,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:14:24,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:14:24,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:14:24,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:14:24,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:14:24,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:14:24,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:14:24,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:14:24,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:14:24,427 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:14:24,476 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:14:24,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:14:24,478 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:14:24,478 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:14:24,478 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:14:24,479 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:14:24,479 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:14:24,479 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:14:24,479 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:14:24,480 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:14:24,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:14:24,483 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:14:24,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:14:24,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:14:24,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:14:24,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:14:24,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:14:24,484 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:14:24,484 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:14:24,484 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:14:24,485 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:14:24,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:14:24,485 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:14:24,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:14:24,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:14:24,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:14:24,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:14:24,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:14:24,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:14:24,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:14:24,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:14:24,488 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:14:24,488 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:14:24,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:14:24,489 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:14:24,489 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:14:24,489 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_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d [2021-11-12 23:14:24,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:14:24,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:14:24,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:14:24,991 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:14:24,991 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:14:24,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2021-11-12 23:14:25,077 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/data/172327864/0ba18ccf214b48e9bc85ee642e8bbb0d/FLAG189d56a4a [2021-11-12 23:14:25,912 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:14:25,914 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2021-11-12 23:14:25,953 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/data/172327864/0ba18ccf214b48e9bc85ee642e8bbb0d/FLAG189d56a4a [2021-11-12 23:14:26,070 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/data/172327864/0ba18ccf214b48e9bc85ee642e8bbb0d [2021-11-12 23:14:26,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:14:26,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:14:26,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:14:26,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:14:26,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:14:26,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:14:26" (1/1) ... [2021-11-12 23:14:26,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30cbe27b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:26, skipping insertion in model container [2021-11-12 23:14:26,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:14:26" (1/1) ... [2021-11-12 23:14:26,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:14:26,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:14:26,811 WARN L228 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_f53a9e5d-3364-4707-bb7a-80bed4f5c467/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[33021,33034] [2021-11-12 23:14:27,068 WARN L228 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_f53a9e5d-3364-4707-bb7a-80bed4f5c467/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[45234,45247] [2021-11-12 23:14:27,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:14:27,138 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:14:27,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:14:27,207 WARN L228 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_f53a9e5d-3364-4707-bb7a-80bed4f5c467/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[33021,33034] [2021-11-12 23:14:27,322 WARN L228 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_f53a9e5d-3364-4707-bb7a-80bed4f5c467/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[45234,45247] [2021-11-12 23:14:27,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:14:27,337 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:14:27,393 WARN L228 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_f53a9e5d-3364-4707-bb7a-80bed4f5c467/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[33021,33034] [2021-11-12 23:14:27,495 WARN L228 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_f53a9e5d-3364-4707-bb7a-80bed4f5c467/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[45234,45247] [2021-11-12 23:14:27,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:14:27,580 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:14:27,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:27 WrapperNode [2021-11-12 23:14:27,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:14:27,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:14:27,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:14:27,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:14:27,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:27" (1/1) ... [2021-11-12 23:14:27,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:27" (1/1) ... [2021-11-12 23:14:27,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:14:27,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:14:27,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:14:27,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:14:27,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:27" (1/1) ... [2021-11-12 23:14:27,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:27" (1/1) ... [2021-11-12 23:14:27,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:27" (1/1) ... [2021-11-12 23:14:27,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:27" (1/1) ... [2021-11-12 23:14:27,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:27" (1/1) ... [2021-11-12 23:14:27,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:27" (1/1) ... [2021-11-12 23:14:27,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:27" (1/1) ... [2021-11-12 23:14:27,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:14:27,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:14:27,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:14:27,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:14:27,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:27" (1/1) ... [2021-11-12 23:14:27,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:14:27,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:14:28,017 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:14:28,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:14:28,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:14:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:14:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:14:28,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:14:28,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:14:28,073 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:14:28,073 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-11-12 23:14:28,073 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-11-12 23:14:28,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:14:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:14:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:14:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-12 23:14:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:14:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:14:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:14:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:14:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:14:28,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:14:36,664 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:14:36,664 INFO L299 CfgBuilder]: Removed 71 assume(true) statements. [2021-11-12 23:14:36,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:14:36 BoogieIcfgContainer [2021-11-12 23:14:36,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:14:36,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:14:36,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:14:36,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:14:36,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:14:26" (1/3) ... [2021-11-12 23:14:36,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0e37b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:14:36, skipping insertion in model container [2021-11-12 23:14:36,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:27" (2/3) ... [2021-11-12 23:14:36,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0e37b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:14:36, skipping insertion in model container [2021-11-12 23:14:36,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:14:36" (3/3) ... [2021-11-12 23:14:36,683 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test8-2.i [2021-11-12 23:14:36,695 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:14:36,696 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-12 23:14:36,758 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:14:36,766 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-11-12 23:14:36,767 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-12 23:14:36,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 229 states have (on average 1.6943231441048034) internal successors, (388), 246 states have internal predecessors, (388), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-12 23:14:36,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:14:36,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:36,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:36,813 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:36,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:36,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1334755327, now seen corresponding path program 1 times [2021-11-12 23:14:36,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:36,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931189017] [2021-11-12 23:14:36,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:36,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:36,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:36,840 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:36,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:14:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:37,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:14:37,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:37,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:37,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:37,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:37,213 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:37,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931189017] [2021-11-12 23:14:37,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931189017] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:37,215 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:37,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:14:37,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172505437] [2021-11-12 23:14:37,218 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:37,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:14:37,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:37,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:14:37,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:14:37,274 INFO L87 Difference]: Start difference. First operand has 255 states, 229 states have (on average 1.6943231441048034) internal successors, (388), 246 states have internal predecessors, (388), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-12 23:14:37,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:37,352 INFO L93 Difference]: Finished difference Result 508 states and 871 transitions. [2021-11-12 23:14:37,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:14:37,355 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-12 23:14:37,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:37,388 INFO L225 Difference]: With dead ends: 508 [2021-11-12 23:14:37,389 INFO L226 Difference]: Without dead ends: 222 [2021-11-12 23:14:37,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:14:37,412 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:37,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 4.49ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:14:37,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-12 23:14:37,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-11-12 23:14:37,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 197 states have (on average 1.3553299492385786) internal successors, (267), 213 states have internal predecessors, (267), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-12 23:14:37,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 307 transitions. [2021-11-12 23:14:37,537 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 307 transitions. Word has length 9 [2021-11-12 23:14:37,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:37,538 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 307 transitions. [2021-11-12 23:14:37,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-12 23:14:37,556 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 307 transitions. [2021-11-12 23:14:37,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-12 23:14:37,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:37,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:37,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:37,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:37,782 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:37,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:37,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1790395171, now seen corresponding path program 1 times [2021-11-12 23:14:37,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:37,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061807044] [2021-11-12 23:14:37,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:37,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:37,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:37,790 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:37,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:14:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:38,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:14:38,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:38,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:38,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:38,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:38,517 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:38,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061807044] [2021-11-12 23:14:38,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061807044] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:38,518 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:38,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 23:14:38,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002814861] [2021-11-12 23:14:38,518 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:38,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:14:38,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:38,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:14:38,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:14:38,522 INFO L87 Difference]: Start difference. First operand 222 states and 307 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-11-12 23:14:38,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:38,797 INFO L93 Difference]: Finished difference Result 355 states and 499 transitions. [2021-11-12 23:14:38,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:14:38,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 44 [2021-11-12 23:14:38,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:38,808 INFO L225 Difference]: With dead ends: 355 [2021-11-12 23:14:38,809 INFO L226 Difference]: Without dead ends: 231 [2021-11-12 23:14:38,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:14:38,815 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 97 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.46ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 211.13ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:38,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 953 Invalid, 69 Unknown, 0 Unchecked, 17.46ms Time], IncrementalHoareTripleChecker [30 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 211.13ms Time] [2021-11-12 23:14:38,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-12 23:14:38,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 225. [2021-11-12 23:14:38,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 200 states have (on average 1.31) internal successors, (262), 216 states have internal predecessors, (262), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-12 23:14:38,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 302 transitions. [2021-11-12 23:14:38,860 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 302 transitions. Word has length 44 [2021-11-12 23:14:38,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:38,861 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 302 transitions. [2021-11-12 23:14:38,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-11-12 23:14:38,861 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 302 transitions. [2021-11-12 23:14:38,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-12 23:14:38,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:38,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:38,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:39,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:39,075 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:39,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:39,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1417019415, now seen corresponding path program 1 times [2021-11-12 23:14:39,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:39,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692581971] [2021-11-12 23:14:39,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:39,078 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:39,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:39,083 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:39,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:14:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:39,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:14:39,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:39,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:14:39,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:14:39,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:14:39,531 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-12 23:14:39,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-12 23:14:39,668 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-12 23:14:39,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-12 23:14:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:39,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:40,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:40,040 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:40,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692581971] [2021-11-12 23:14:40,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692581971] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:40,041 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:40,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:14:40,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167157336] [2021-11-12 23:14:40,042 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:40,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:14:40,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:40,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:14:40,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:14:40,044 INFO L87 Difference]: Start difference. First operand 225 states and 302 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2021-11-12 23:14:45,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:14:47,714 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:14:52,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:14:53,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:53,817 INFO L93 Difference]: Finished difference Result 552 states and 724 transitions. [2021-11-12 23:14:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:14:53,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 44 [2021-11-12 23:14:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:53,823 INFO L225 Difference]: With dead ends: 552 [2021-11-12 23:14:53,823 INFO L226 Difference]: Without dead ends: 424 [2021-11-12 23:14:53,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:14:53,826 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 216 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13352.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.86ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13674.34ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:53,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 1265 Invalid, 256 Unknown, 0 Unchecked, 11.86ms Time], IncrementalHoareTripleChecker [4 Valid, 250 Invalid, 2 Unknown, 0 Unchecked, 13674.34ms Time] [2021-11-12 23:14:53,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-12 23:14:53,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 227. [2021-11-12 23:14:53,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 202 states have (on average 1.306930693069307) internal successors, (264), 218 states have internal predecessors, (264), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-12 23:14:53,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 304 transitions. [2021-11-12 23:14:53,856 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 304 transitions. Word has length 44 [2021-11-12 23:14:53,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:53,857 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 304 transitions. [2021-11-12 23:14:53,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2021-11-12 23:14:53,857 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 304 transitions. [2021-11-12 23:14:53,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-12 23:14:53,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:53,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:53,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:54,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:54,084 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:54,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:54,085 INFO L85 PathProgramCache]: Analyzing trace with hash -342228401, now seen corresponding path program 1 times [2021-11-12 23:14:54,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:54,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401503160] [2021-11-12 23:14:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:54,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:54,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:54,089 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:54,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:14:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:54,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:14:54,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:54,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:54,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:54,821 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:54,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401503160] [2021-11-12 23:14:54,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401503160] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:54,822 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:54,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 23:14:54,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126229047] [2021-11-12 23:14:54,823 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:54,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:14:54,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:54,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:14:54,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:14:54,825 INFO L87 Difference]: Start difference. First operand 227 states and 304 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:55,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:55,025 INFO L93 Difference]: Finished difference Result 459 states and 616 transitions. [2021-11-12 23:14:55,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:14:55,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-12 23:14:55,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:55,035 INFO L225 Difference]: With dead ends: 459 [2021-11-12 23:14:55,037 INFO L226 Difference]: Without dead ends: 236 [2021-11-12 23:14:55,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:14:55,043 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 396 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.33ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 161.43ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:55,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 619 Invalid, 80 Unknown, 0 Unchecked, 5.33ms Time], IncrementalHoareTripleChecker [44 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 161.43ms Time] [2021-11-12 23:14:55,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-11-12 23:14:55,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 230. [2021-11-12 23:14:55,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 205 states have (on average 1.2634146341463415) internal successors, (259), 221 states have internal predecessors, (259), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-12 23:14:55,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 299 transitions. [2021-11-12 23:14:55,082 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 299 transitions. Word has length 61 [2021-11-12 23:14:55,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:55,083 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 299 transitions. [2021-11-12 23:14:55,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:55,084 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 299 transitions. [2021-11-12 23:14:55,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-12 23:14:55,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:55,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:55,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:55,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:55,297 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:55,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:55,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1231044993, now seen corresponding path program 1 times [2021-11-12 23:14:55,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:55,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868325762] [2021-11-12 23:14:55,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:55,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:55,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:55,300 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:55,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:14:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:55,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:14:55,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:55,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:56,346 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:56,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868325762] [2021-11-12 23:14:56,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868325762] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:56,347 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:56,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 8 [2021-11-12 23:14:56,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386053104] [2021-11-12 23:14:56,347 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:56,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:14:56,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:56,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:14:56,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:14:56,350 INFO L87 Difference]: Start difference. First operand 230 states and 299 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:56,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:56,502 INFO L93 Difference]: Finished difference Result 455 states and 593 transitions. [2021-11-12 23:14:56,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:14:56,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-12 23:14:56,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:56,506 INFO L225 Difference]: With dead ends: 455 [2021-11-12 23:14:56,506 INFO L226 Difference]: Without dead ends: 229 [2021-11-12 23:14:56,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:14:56,509 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 365 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.29ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 117.20ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:56,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 612 Invalid, 64 Unknown, 0 Unchecked, 12.29ms Time], IncrementalHoareTripleChecker [23 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 117.20ms Time] [2021-11-12 23:14:56,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-12 23:14:56,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 224. [2021-11-12 23:14:56,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 199 states have (on average 1.2512562814070352) internal successors, (249), 215 states have internal predecessors, (249), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-12 23:14:56,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 289 transitions. [2021-11-12 23:14:56,527 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 289 transitions. Word has length 61 [2021-11-12 23:14:56,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:56,527 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 289 transitions. [2021-11-12 23:14:56,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:56,528 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 289 transitions. [2021-11-12 23:14:56,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-12 23:14:56,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:56,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:56,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-12 23:14:56,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:56,747 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:56,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:56,748 INFO L85 PathProgramCache]: Analyzing trace with hash 933653125, now seen corresponding path program 1 times [2021-11-12 23:14:56,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:56,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42836673] [2021-11-12 23:14:56,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:56,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:56,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:56,751 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:56,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:14:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:57,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:14:57,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:57,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:57,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:57,954 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:57,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42836673] [2021-11-12 23:14:57,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [42836673] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:57,955 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:57,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:14:57,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728905759] [2021-11-12 23:14:57,956 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:57,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:14:57,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:57,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:14:57,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:14:57,957 INFO L87 Difference]: Start difference. First operand 224 states and 289 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:58,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:58,686 INFO L93 Difference]: Finished difference Result 549 states and 694 transitions. [2021-11-12 23:14:58,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:14:58,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-12 23:14:58,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:58,690 INFO L225 Difference]: With dead ends: 549 [2021-11-12 23:14:58,690 INFO L226 Difference]: Without dead ends: 329 [2021-11-12 23:14:58,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:14:58,693 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 79 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 658.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.11ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 702.89ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:58,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 563 Invalid, 34 Unknown, 0 Unchecked, 3.11ms Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 702.89ms Time] [2021-11-12 23:14:58,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-12 23:14:58,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 326. [2021-11-12 23:14:58,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 300 states have (on average 1.21) internal successors, (363), 316 states have internal predecessors, (363), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-12 23:14:58,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 405 transitions. [2021-11-12 23:14:58,715 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 405 transitions. Word has length 61 [2021-11-12 23:14:58,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:58,716 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 405 transitions. [2021-11-12 23:14:58,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:58,716 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 405 transitions. [2021-11-12 23:14:58,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-12 23:14:58,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:58,718 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:58,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:58,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:58,936 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:58,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:58,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1452917895, now seen corresponding path program 1 times [2021-11-12 23:14:58,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:58,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499804833] [2021-11-12 23:14:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:58,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:58,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:58,941 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:58,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:14:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:59,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:14:59,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:59,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:59,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:14:59,788 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:59,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499804833] [2021-11-12 23:14:59,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499804833] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:14:59,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:14:59,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-12 23:14:59,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338550571] [2021-11-12 23:14:59,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:59,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:14:59,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:59,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:14:59,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:14:59,791 INFO L87 Difference]: Start difference. First operand 326 states and 405 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:14:59,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:59,863 INFO L93 Difference]: Finished difference Result 616 states and 777 transitions. [2021-11-12 23:14:59,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:14:59,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 76 [2021-11-12 23:14:59,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:59,867 INFO L225 Difference]: With dead ends: 616 [2021-11-12 23:14:59,868 INFO L226 Difference]: Without dead ends: 329 [2021-11-12 23:14:59,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:14:59,870 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 2 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.27ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.29ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:59,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 830 Invalid, 13 Unknown, 0 Unchecked, 3.27ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 38.29ms Time] [2021-11-12 23:14:59,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-12 23:14:59,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2021-11-12 23:14:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 302 states have (on average 1.2119205298013245) internal successors, (366), 319 states have internal predecessors, (366), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2021-11-12 23:14:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 409 transitions. [2021-11-12 23:14:59,892 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 409 transitions. Word has length 76 [2021-11-12 23:14:59,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:59,892 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 409 transitions. [2021-11-12 23:14:59,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:14:59,893 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 409 transitions. [2021-11-12 23:14:59,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-12 23:14:59,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:59,895 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:59,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:00,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:15:00,114 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:15:00,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:00,114 INFO L85 PathProgramCache]: Analyzing trace with hash -975375717, now seen corresponding path program 1 times [2021-11-12 23:15:00,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:15:00,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106770978] [2021-11-12 23:15:00,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:00,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:15:00,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:15:00,116 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:15:00,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:15:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:00,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:15:00,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:00,711 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:15:00,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:01,018 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:15:01,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:15:01,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106770978] [2021-11-12 23:15:01,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106770978] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:15:01,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1910363740] [2021-11-12 23:15:01,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:01,020 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:15:01,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:15:01,026 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:15:01,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-12 23:15:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:01,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:15:01,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:01,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:15:01,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:15:01,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1910363740] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:15:01,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37854790] [2021-11-12 23:15:01,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:01,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:15:01,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:15:02,003 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:15:02,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-12 23:15:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:02,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:15:02,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:02,492 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:15:02,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:15:02,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37854790] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:15:02,830 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:15:02,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2021-11-12 23:15:02,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760802723] [2021-11-12 23:15:02,831 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:15:02,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 23:15:02,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:15:02,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 23:15:02,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:15:02,834 INFO L87 Difference]: Start difference. First operand 329 states and 409 transitions. Second operand has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 23:15:03,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:15:03,436 INFO L93 Difference]: Finished difference Result 634 states and 805 transitions. [2021-11-12 23:15:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:15:03,437 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 78 [2021-11-12 23:15:03,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:15:03,441 INFO L225 Difference]: With dead ends: 634 [2021-11-12 23:15:03,441 INFO L226 Difference]: Without dead ends: 344 [2021-11-12 23:15:03,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:15:03,443 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 41 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 204.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.32ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 233.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:15:03,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1919 Invalid, 99 Unknown, 0 Unchecked, 10.32ms Time], IncrementalHoareTripleChecker [27 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 233.00ms Time] [2021-11-12 23:15:03,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-12 23:15:03,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 340. [2021-11-12 23:15:03,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 312 states have (on average 1.2307692307692308) internal successors, (384), 329 states have internal predecessors, (384), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2021-11-12 23:15:03,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 427 transitions. [2021-11-12 23:15:03,469 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 427 transitions. Word has length 78 [2021-11-12 23:15:03,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:15:03,470 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 427 transitions. [2021-11-12 23:15:03,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 23:15:03,470 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 427 transitions. [2021-11-12 23:15:03,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-12 23:15:03,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:03,472 INFO L514 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:15:03,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:03,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:03,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:04,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:15:04,101 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:15:04,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:04,102 INFO L85 PathProgramCache]: Analyzing trace with hash -589772551, now seen corresponding path program 2 times [2021-11-12 23:15:04,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:15:04,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173206284] [2021-11-12 23:15:04,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:15:04,103 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:15:04,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:15:04,105 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:15:04,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:15:05,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:15:05,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:15:05,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:15:05,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:06,091 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-12 23:15:06,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:06,604 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 23:15:06,605 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:15:06,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173206284] [2021-11-12 23:15:06,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173206284] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:15:06,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [352185440] [2021-11-12 23:15:06,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:15:06,605 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:15:06,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:15:06,606 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:15:06,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-12 23:15:11,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:15:11,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:15:11,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:15:11,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:11,671 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-12 23:15:11,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 23:15:11,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [352185440] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:15:11,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345501071] [2021-11-12 23:15:11,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:15:11,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:15:11,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:15:11,946 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:15:11,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53a9e5d-3364-4707-bb7a-80bed4f5c467/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process